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shell-command

常用的shell命令

mac下的sed命令的-i参数,需要带一个备份文件名,如果不需要备份用空字符串替换

  • grep -lr AAA ./* | xargs sed -i "" 's|AAA|BBB|g'

sudo权限重定向

  • sudo sh -c ">access.log"

vim删除空白行

  • g/^$/d

awk求和

  • awk 'BEGIN{total=0}{total+=$1}END{print total}'

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