# time ./TestSigalrm.pl
Wed Jul 24 08:38:20 2019 : BEGIN - MAIN
Wed Jul 24 08:38:20 2019 : MainSub - timer set to 10 seconds
Wed Jul 24 08:38:20 2019 : MainSub - CommandLine received:
Hallo, sleeping for 120 seconds ...
Alarm clock

real    0m10.018s
user    0m0.014s
sys     0m0.002s