perl one-liner 像grep? [英] perl one-liner like grep?

问题描述

我想让 perl 做一个像 grep

i'd like perl to do a one-liner like grep

有点像这样，但我不知道要添加什么才能使它起作用

a bit like this, but i'm not sure what to add to make it work

$ (echo a ; echo b ; echo c) | perl -e 'a'

添加我在这里的回答涵盖了这一点以及更多
https://superuser.com/questions/416419/perl-for-matching-with-regex-in-terminal

ADDED My answer here covers that and more
https://superuser.com/questions/416419/perl-for-matching-with-regex-in-terminal

推荐答案

(echo a; echo b; echo c) | perl -ne 'print if /a/'

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