UNIX – SED Remove Comment Lines

Posted on By David Kittell

This script will remove all lines that start with # along with all comments.

Whatever file you choose I suggest you view first then execute

sed "/^\s*#/d;s/\s*#[^\"']*$//" /etc/dnsmasq.conf && sed '/^\s*$/d' /etc/dnsmasq.conf

sudo sed -i "/^\s*#/d;s/\s*#[^\"']*$//" /etc/dnsmasq.conf && sudo sed -i '/^\s*$/d' /etc/dnsmasq.conf
All information on this site is shared with the intention to help. Before any source code or program is ran on a production (non-development) system it is suggested you test it and fully understand what it is doing not just what it appears it is doing. I accept no responsibility for any damage you may do with this code.
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