grep怎么匹配全是数字或者字符

moperyblue

回复 8# sauer
grep -P '^(\d+\s*)+$'  
?

Windows19

1. grep -E '^[[:digit:] ]+$'

复制代码

sunzhiguolu

echo '444
444   222'|grep -P '^(\d+|\s+)+$'

sunzhiguolu

回复 12# Windows19
请问你代码中最后的 $ 和 ' 字符如何如何进行添加的。我怎么加不上啊，谢谢。

Windows19

回复 14# sunzhiguolu

没返回信息说明是能添加的，也可能版本环境不同吧

sunzhiguolu

回复 15# Windows19
方便说一下 你那个版本环境是什么呢？

Windows19

回复 16# sunzhiguolu
老师    下面是我用版本

$ bash --version
GNU bash, version 4.3.42(4)-release (x86_64-unknown-cygwin)
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.htm
This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

$ grep --version
grep (GNU grep) 2.24
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Mike Haertel and others, see <http://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>.
$

Windows19

$ perl -v

This is perl 5, version 22, subversion 2 (v5.22.2) built for cygwin-thread-multi

Copyright 1987-2015, Larry Wall

cclxpp123

grep -E '^\w+$' file

sunzhiguolu