Perl - Insert lines after a match is found in a file

Question

I have a file with the following syntax in some_1.xyz

module some_1 {
INPUT PINS
OUTPUT PINS
}

and I want to insert APPLY DELAYS xx and APPLY L

Answer 1

one-liner

perl -pi -e '/module some_1/ and $_.="APPLY DELAY xx \nAPPLY LOADS  ld\n"' files*.txt