extract regexp result from string and write it to a variable

Question

I\'m trying to write a shell script that searches in a file specified as argument $1 for a regex and writes the found subpattern into a variable I can then use.

let\'s s

Answer 1

You could try something along the lines of

value=`grep '^set output' $x | cut -d' ' -f 3`

(Note that you will retain the quotes in $value