使用sed搜索字符串並在行尾但在引號之前添加字符串

Question

我正在尋求幫助以查找字符串並在行尾但在引號之前添加字符串

文件輸出：

 I have a file
 search_string="It has some text"
 some other text

我嘗試了以下方法：

 sed -i '/^search_string=/ s/$/ add_string one add_string two/' file

我得到以下輸出：

 I have a file
 search_string="It has some text" add_string one add_string two
 some other text

預期輸出：

 I have a file
 search_string="It has some text add_string one add_string two"
 some other text

Answer 1

$ sed 's/search_string="[^"]*/& add_string_one add string two/' file

您可以使用-i就地進行操作：

$ sed -i.bak 's/search_string="[^"]*/& add_string_one add string two/' file

$ diff file.bak file
2c2
< search_string="It has some text"
---
> search_string="It has some text add_string_one add string two"

Answer 2

sed '/^.*search_string=/ s/\(.*\)"/\1 add_string one add_string two"/' file

Answer 3

簡單修改OP的代碼

$ sed '/^search_string=/ s/"$/ add_string one add_string two"/' file
I have a file
search_string="It has some text add_string one add_string two"
some other text

• "$匹配行尾的雙引號
• 在替換部分中，也添加報價

或者，為避免將文本重復顯示較長的文本，請使用& 。 例如：

$ sed '/^search_string=/ s/ text"$/ add_string one add_string two&/' file
I have a file
search_string="It has some add_string one add_string two text"
some other text