Linux 如何使用 SED 替换文件内的撇号
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How to replace to apostrophe ' inside a file using SED
提问by neversaint
I have a file "test.txt" that contain the following
我有一个包含以下内容的文件“test.txt”
+foo+
+bar+
What I want to do is to replace them into:
我想要做的是将它们替换为:
'foo'
'bar'
But why this code doesn't work?
但是为什么这段代码不起作用?
sed 's/\+/\'/' test.txt
What's the right way to do it?
正确的做法是什么?
采纳答案by falsetru
Use "
instead. And add g
flag to replace all.
使用"
来代替。并添加g
标志以替换所有内容。
sed "s/\+/\'/g" test.txt
回答by anubhava
+
is not a special character without -r
switch in sed. You can run the substitute command without any escaping:
+
不是没有-r
切换到 sed的特殊字符。您可以在不进行任何转义的情况下运行替换命令:
echo '+foo+' | sed "s/+/'/g"
# output: 'foo'
If you want to save changed file then use:
如果要保存更改的文件,请使用:
sed -i.bak "s/+/'/g" test.txt
回答by devnull
You can also replace all instances of +
with '
in the file by using tr
:
您也可以替换的所有实例+
与'
使用该文件中tr
:
tr '+' "'" < inputfile
回答by potong
This might work for yoyu (GNU sed):
这可能适用于 yoyu (GNU sed):
sed 'y/+/'\''/' file