50个常用的Linux命令（二）sed

最新推荐文章于 2025-09-05 23:07:29 发布

转载最新推荐文章于 2025-09-05 23:07:29 发布 · 82 阅读

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原文链接：http://www.cnblogs.com/william126/p/10396265.html

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#操作系统 #python

本文深入探讨了SED命令在文本处理中的高级应用，包括替换字符串、删除空行、使用正则表达式等技巧，通过实际案例展示了SED的强大功能。

[root@localhost cee]# echo this thisthisthis |sed 's/this/THIS/g'
THIS THISTHISTHIS
[root@localhost cee]# echo this thisthisthis |sed 's/this/THIS/2g'
this THISTHISTHIS
[root@localhost cee]# echo this thisthisthis |sed 's/this/THIS/3g'
this thisTHISTHIS
[root@localhost cee]# echo this thisthisthis |sed 's/this/THIS/4g'
this thisthisTHIS

[root@localhost cee]# cat temp
i love linux

i love python
william
[root@localhost cee]# sed '/^$/d' temp
i love linux
i love python
william
[root@localhost cee]# cat temp
i love linux

i love python
william

[root@localhost cee]# echo this is an example |sed 's/\w\+/[&]/g'
[this] [is] [an] [example]
[root@localhost cee]# echo this is an example |sed 's/\w\+/"&"/g'
"this" "is" "an" "example"
[root@localhost cee]# echo this is digit 7 in a number | sed 's/digit $[0-9]$/\1/g'
this is 7 in a number

[root@localhost cee]# echo seven EIGHT |sed 's/$[a-z]\+$ $[A-Z]\+$/\2 \1/g'
EIGHT seven