用xargs加速grep

By jianingy on July 11, 2008 9:04 PM | No Comments | No TrackBacks

xargs有个开关-P，意思是同时启动多少个子进程。借助xargs的这个特性可以加速grep文件的速度。例如，

grep  -r "libm.so.2" *

可以改写为

find . -type f | xargs -n 1 -P 20 grep "libm.so.2"

这样就会有20个进程同时查找了。

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