How to UNCOMMENT a line that contains a specific string using Sed?

Question

The lines in the file :

-A INPUT -m state --state NEW -m tcp -p tcp --dport 2000 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 2001 -j ACCEPT
-A          


        

Answer 1

Try this sed command,

sed -i '/^#.* 2001 /s/^#//' file