免费注册 查看新帖 |

Chinaunix

  平台 论坛 博客 文库
最近访问板块 发新帖
查看: 1827 | 回复: 0
打印 上一主题 下一主题

grep 选项 [复制链接]

论坛徽章:
0
跳转到指定楼层
1 [收藏(0)] [报告]
发表于 2010-02-20 11:43 |只看该作者 |倒序浏览

^
Beginning-of-line anchor
'^love'
Matches all lines beginning with love.
$
End-of-line anchor
'love$'
Matches all lines ending with love.
.
Matches one character
'l..e'
Matches lines containing an l, followed by two characters, followed by an e.
*
Matches zero or more characters preceding the asterisk
' *love'
Matches lines with zero or more spaces, followed by the pattern love.
[ ]
Matches one character in the set
'[Ll]ove'
Matches lines containing love or Love.
[^]
Matches one character not in the set
'[^A–K]ove'
Matches lines not containing a character in the range A through K, followed by ove.
\
Beginning-of-word anchor
'\
Matches lines containing a word that begins with love.
\>
End-of-word anchor
'love\>'
Matches lines containing a word that ends with love.
\(..\)
Tags matched characters
'\(love\)ing'
Tags marked portion in a register to be remembered later as number 1. To reference later, use \1 to repeat the pattern. May use up to nine tags, starting with the first tag at the leftmost part of the pattern. For example, the pattern love is saved in register 1 to be referenced later as \1.

x\{m\}

x\{m,\}

x\{m,n\}

Repetition of character x: m times, at least m times, or between m and n times

'o\{5\}'

'o\{5,\}'

'o\{5,10\}'

Matches if line has 5 occurences of o, at least 5 occurences of o, or between 5 and 10 occurrences of o.


Option
What It Does
–b
Precedes each line by the block number on which it was found. This is sometimes useful in locating disk block numbers by context.
–c
Displays a count of matching lines rather than displaying the lines that match.
–h
Does not display filenames.
–i
Ignores the case of letters in comparisons (i.e., upper- and lowercase are considered identical).
–l
Lists only the names of files with matching lines (once), separated by newline characters.
–n
Precedes each line by its relative line number in the file.
–s
Works silently, that is, displays nothing except error messages. This is useful for checking the exit status.
–v
Inverts the search to display only lines that do not match.
–w
Searches for the expression as a word, as if surrounded by \ and \>. This applies to grep only. (Not all versions of grep support this feature; e.g., SCO UNIX does not.)



本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u/21006/showart_2182729.html
您需要登录后才可以回帖 登录 | 注册

本版积分规则 发表回复

  

北京盛拓优讯信息技术有限公司. 版权所有 京ICP备16024965号-6 北京市公安局海淀分局网监中心备案编号:11010802020122 niuxiaotong@pcpop.com 17352615567
未成年举报专区
中国互联网协会会员  联系我们:huangweiwei@itpub.net
感谢所有关心和支持过ChinaUnix的朋友们 转载本站内容请注明原作者名及出处

清除 Cookies - ChinaUnix - Archiver - WAP - TOP