Specify the string method in the replacement file of Linux

Sed-I's/old_string/new_string/G' file_name>/dev/null

 

 

Use double quotation marks when referencing shell variables in the SED command line, instead of the common single quotation marks. Below
Is a script to delete the zone segment in the named. conf file based on the content of the name variable:
Name = 'zone \ "localhost "'
Sed "/$ name/,/};/D" named. conf
 
Sed-I "s/oldstring/newstring/g" 'grep oldstring-rl yourdir'
 
For example, replace123Is chinafar.com

 
Sed-I "s/www.itbbs.cn/chinafar.com/g" 'grep123-RL/home'