用 sed 替换子字符串 [英] Replace substring with sed

问题描述

我有一个这样的字符串:

I have a string like this :

test:blabla

对于 sed，我想用其他东西替换 ':' 之后的内容.

And with sed, I want to replace what's after the ':' with something else.

我可以设法替换一个单词，但不能替换':'之后的那个.我在互联网上搜索了答案，但没有找到任何东西.

I can manage to replace a word, but not the one after the ':'. I searched on the internet for the answer, but I didn't found anything.

有什么帮助吗?

推荐答案

使用:sed 's/:.*/:replaceword/'

$ echo test:blabla | sed 's/:.*/:replaceword/'
test:replaceword

或者对于 test test:blabla test 的情况，您只想替换 : 后面的单词，请使用 sed 's/:[^ ]*/:replaceword/':

Or for the situation test test:blabla test where you only want to replace the word following : use sed 's/:[^ ]*/:replaceword/':

$ echo "test test:blabla test" | sed 's/:[^ ]*/:replaceword/'
test test:replaceword test

# Use the g flag for multiple matches on a line
$ echo "test test:blabla test test:blah2" | sed 's/:[^ ]*/:replaceword/g'
test test:replaceword test test:replaceword

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