给大家带来收集剖析shell剧本(及时流量+毗连统计)

如果您觉得本篇CentOSLinux教程讲得好，请记得点击右边漂浮的分享程序，把好文章分享给你的好朋友们！<divclass="post_content_text"style="border-style:nonenonedashed;border-bottom-width:1px;border-bottom-color:rgb(170,170,170);list-style:none;margin:0px0px5px;padding:3px6px;font-family:微软雅黑;font-size:13px;line-height:22px;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">先容一个壮大的剖析收集的shell剧本，此剧本是从EZHTTP拆分出来的，以为有需要独自先容下。
剧本运转效果截图：

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此剧本包括的功效有：

• 1、及时监控恣意网卡的流量
  
• 2、统计10秒内均匀流量
  
• 3、统计每一个端口在10秒内的均匀流量，基于客户端和办事端端口统计。能够看出哪些端口占流量对照年夜，关于web办事器，通常为80端口。别的端口遭到打击时，也有大概别的端口流量对照年夜。以是此功效能够匡助我们端口流量是不是一般。
  
• 4、统计在10s内占用带宽最年夜的前10个ip。此项功效能够匡助我们来查出是不是有歹意占用带宽的ip。
  
• 5、统计毗连形态。此项功效可让我们看出哪些毗连形态对照年夜。假如SYN-RECV形态对照多的话，有能够遭到半毗连打击。假如ESTABLISED十分年夜，但经由过程日记发明没有那末多哀求，大概经由过程tcpdump发明大批ip只创建毗连不哀求数据的话，多是遭到了全毗连打击，这时候候假如你利用的是nginx办事器，能够在设置文件增添listen80deferred来避免。
  
• 6、统计各端口毗连形态。当大概遭到打击时，此项功效能够匡助我们发明是哪一个端口遭到打击。
  
• 7、统计端口为80且形态为ESTAB毗连数最多的前10个IP。此项功效能够匡助我们来找出创立毗连过量的Ip，进而屏障。
  
• 8、统计端口为80且形态为SYN-RECV毗连数最多的前10个IP。当遭到半毗连打击时，此项功效能够匡助我们找到歹意ip。
  

用到的收集剖析工具：

• 1、tcpdump:此剧本用tcpdump来统计基于ip或基于端口的流量。
  
• 2、ss：此剧本用ss下令来统计毗连形态，实践利用发明ss比netstat高效很多。
  
• 3、/proc/net/dev，用来统计指定网卡的流量。
  

剧本下载地点：https://www.centos.bz/wp-content/uploads/2014/06/network-analysis.sh
上面贴出完全的剧本：
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"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">for((i=1;i<=${#arr[@]};i++));doecho-e"$i)${arr[$i-1]}";done<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">echo<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">read-p"${prompt}"$soft<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">evallocalselect=$$soft<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">if["$select"==""]||["${arr[$soft-1]}"==""];then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">prompt="inputerrors,pleaseinputanumber:"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">else<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">eval$soft=${arr[$soft-1]}<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">evalecho"yourselection:$$soft"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">break<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">fi<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">done<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">}<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#把带宽bit单元转换为人类可读单元<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">bit_to_human_readable(){<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#inputbitvalue<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localtrafficValue=$1<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">if[[${trafficValue%.*}-gt922]];then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#convtoKb<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">trafficValue=`awk-vvalue=$trafficValueBEGIN{printf"%0.1f",value/1024}`<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">if[[${trafficValue%.*}-gt922]];then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#convtoMb<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">trafficValue=`awk-vvalue=$trafficValueBEGIN{printf"%0.1f",value/1024}`<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">echo"${trafficValue}Mb"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">else<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">echo"${trafficValue}Kb"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">fi<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">else<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">echo"${trafficValue}b"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">fi<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">}<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#判别保证理工具<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">check_package_manager(){<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localmanager=$1<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localsystemPackage=<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">ifcat/etc/issue|grep-q-E-i"ubuntu|debian";then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">systemPackage=apt<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">elifcat/etc/issue|grep-q-E-i"centos|redhat|redhat";then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">systemPackage=yum<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">elifcat/proc/version|grep-q-E-i"ubuntu|debian";then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">systemPackage=apt<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">elifcat/proc/version|grep-q-E-i"centos|redhat|redhat";then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">systemPackage=yum<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">else<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">echo"unkonw"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">fi<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">if["$manager"=="$systemPackage"];then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">return0<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">else<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">return1<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">fi<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">}<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#及时流量<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">realTimeTraffic(){<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localeth=""<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localnic_arr=(`ifconfig|grep-E-o"^[a-z0-9]+"|grep-v"lo"|uniq`)<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localnicLen=${#nic_arr[@]}<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">if[[$nicLen-eq0]];then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">echo"sorry,Icannotdetectanynetworkdevice,pleasereportthisissuetoauthor."<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">exit1<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">elif[[$nicLen-eq1]];then<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">eth=$nic_arr<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">else<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">display_menunic<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">eth=$nic<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">fi<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localclear=true<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localeth_in_peak=0<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localeth_out_peak=0<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localeth_in=0<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">localeth_out=0<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;"><listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">whiletrue;do<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#挪动光标到0:0地位<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">printf"33[0;0H"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">#清屏并打印NowPeak<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">[[$clear==true]]&&printf"33[2J"&&echo"$eth--------Now--------Peak-----------"<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">traffic_be=(`awk-veth=$eth-F[:]+{if($0~eth){print$3,$11}}/proc/net/dev`)<listyle="border-style:solidnonenonesolid;border-top-width:1px;border-left-width:1px;border-left-color:rgb(195,206,217);border-top-color:rgb(227,238,249)!important;list-style:decimaloutside!important;margin:0px!important;padding:0px0px0px12px!important;font-size:12px!important;line-height:20px!important;background-image:initial;background-attachment:initial;background-size:initial;background-origin:initial;background-clip:initial;background-position:initial;background-repeat:initial;">sleep2

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Linux?最大的优点在于其作为服务器的强大功能，同时支持多种应用程序及开发工具，所以Linux操作系统有着广泛的应用空间。

现在的linux操作系统如redhat，难点，红旗等，都是用这么一个内核，加上其它的用程序(包括X)构成的。

我想即使Linux高手也很难快速准确精练的回答你。

有疑问前，知识学习前，先用搜索。

为什么要学Linux呢？每个人都有不同的看法，下面我说说自己的感想吧。?

以前觉得Linux就跟dos一样，全是用命令窗口，相对于窗口界面来说多麻烦呀。

硬盘安装及光盘安装，清楚了解安装Linux应注意的有关问题，如安装Linux应在最后一个分区内，至少分二个分区。