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                ### sed SED是一項Linux指令,功能同awk類似,差別在于,sed簡單,對列處理的功能要差一些,awk的功能復雜,對列處理的功能比較強大。 ### awk 文本統計 - 一些文件中,文件名以 _ 分隔, 分隔后的項只有 7 項的文件 ``` ls -1 | awk -F '_' '{if(NF==7)print $0}' | wc -l ``` - awk 中執行shell命令 ``` ls -1 | awk -F '_' '{if(NF==7)print $0}' | awk '{cmd="cat "$0" | wc -l";system(cmd)}' ``` - 統計(文件內容大于100的算)) ``` ls -1| awk -F '_' '{if((NF==8)&&(substr($6,0,6)=='201708'))print $0}' | awk '{printf $0" ";cmd="cat "$0" | wc -l";system(cmd)}' | awk '{if($2>=100)print $0}' | wc -l ``` - 統計第一項相同的行,并且第二行進行相加,第三行列出每一項 ``` cat 201708.txt | awk -F '_' '{printf $0" "; print substr($6,0,8)}' | awk '{print $3,$2}' | awk 'BEGIN{FS=OFS=" "}{a[$1]+=$2;b[$1]=b[$1]$NF"/"}END{for(i in a)print i,a[i],b[i]}' ``` ### IO 性能監控 iostat -x 1 10 ### 查看cpu的信息 cat /proc/cpuinfo
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