Question

I’ve got a file that I need to get a piece of text from using regex. We’ll call the file x.txt. What I would like to do is open x.txt, extract the regex match from the file and set that into a parameter. Can anyone give me some pointers on this?

EDIT

So in x.txt I have the following line

$variable = '1.2.3';

I need to extract the 1.2.3 from the file into my bash script to then use for a zip file

Answer 1

You can use the grep-chop-chop technique

var="$(grep -F -m 1 '$variable =' file)"; var="${var#*\'}"; var="${var%\'*}"