########################################################################### # nohup - run a command immune to hangups, with output to a non-tty # # This allows you to run programs in the background so if you get # bumped out of the server, the program will still continue to run ########################################################################### nohup COMMAND & where COMMAND is your perl program For example, if I would like to run umls-similarity.pl in the background nohup umls-similarity --measure path hand skull & It will run umls-similarity and store the STDERR and STDOUT output in a file called nohup.out