在 linux 系统上找到所有匹配 'name' 的文件，并用它们搜索 'text'

问题描述

我需要在 Linux 系统上找到filename.ext"的所有实例，并查看哪些包含文本lookingfor".

I need to find all instances of 'filename.ext' on a linux system and see which ones contain the text 'lookingfor'.

是否有一组可行的 linux 命令行操作?

Is there a set of linux command line operations that would work?

推荐答案

find / -type f -name filename.ext -exec grep -l 'lookingfor' {} +

使用 + 终止命令比 ; 更有效率，因为 find 将整批文件发送到 grep 而不是一一发送.这避免了对找到的每个文件的 fork/exec.

Using a + to terminate the command is more efficient than ; because find sends a whole batch of files to grep instead of sending them one by one. This avoids a fork/exec for each single file which is found.

不久前我做了一些测试来比较 xargs 与 {} + 与 {} ; 的性能，我发现{} + 更快.以下是我的一些结果:

A while ago I did some testing to compare the performance of xargs vs {} + vs {} ; and I found that {} + was faster. Here are some of my results:

time find . -name "*20090430*" -exec touch {} +
real    0m31.98s
user    0m0.06s
sys     0m0.49s

time find . -name "*20090430*" | xargs touch
real    1m8.81s
user    0m0.13s
sys     0m1.07s

time find . -name "*20090430*" -exec touch {} ;
real    1m42.53s
user    0m0.17s
sys     0m2.42s

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