GNU/Linux : how to run a recursive grep
How to make a recursive grep to find the string 'acmee' in all files of current and sub-directories ? For this you can use linux cmd line : find .…
GNU/Linux : string replace with ‘sed’ command
$ sed -i 's/old_str/new_str/g' file* => change all strings "old_str" by "new_str" in all files whose name begins by "file"