bash one liner to change/remove test pattern from config file or text file.

2010-06-25 163 words 1 min read


I had a directory with a lot of config files in the ini file format, i.e. name and value separated by equals. Some/all of these contained some directory names and other values which had to be replaced. But there were other place where I should not not replace them, if there was no exact match. I also needed to have a backup copy of the file that I was modifying. Since the number of files that I needed to change was multiple so was quite difficult to do it without using some script.


for i in $(grep -l ’/opt/amitag’  *) ;

do sed ’s@/opt/amitag/@@’ $i >${i}.new;

mv $i{,.bak};

mv $i{.new,} ;


I was doing it in a box where sed did not have the -i option and hence I had to write sed output to different file, and then move the files back and forth. You can change the string ”/opt/amitag” in the above commands to anything you like 🙂


Authored By Amit Agarwal

Amit Agarwal, Linux and Photography are my hobbies.Creative Commons Attribution 4.0 International License.

We notice you're using an adblocker. If you like our webite please keep us running by whitelisting this site in your ad blocker. We’re serving quality, related ads only. Thank you!

I've whitelisted your website.

Not now
This website uses cookies to ensure you get the best experience on our website. Learn more Got it