Bo, nice tutorial, however I don't really know the context for using this script. Could you shine a little more light on why? When? And what for?
Thanks
Hey Matt, this could be useful when you do some shell programming. For example, if your shell script will create some temporary files in order to get the task done, and once the task is done, you will clean those temporary files, the logic is something like this (psudo-code):
prepare_temporary_files()
do_task() # may take a long time
clean_temporary_files()
Now when your shell is running do_task part, you press Ctrl+C, your script is interrupted and stopped, but those temporary files never get cleaned up.
To fix this, you can add trap clean_temporary_files 2 to your script, which will caught the Ctrl+C signal (#2 SIGINT), then it will do the clean_temporary_files function.
Bo, nice tutorial, however I don't really know the context for using this script. Could you shine a little more light on why? When? And what for?
Thanks
Hey Matt, this could be useful when you do some shell programming. For example, if your shell script will create some temporary files in order to get the task done, and once the task is done, you will clean those temporary files, the logic is something like this (psudo-code):
Now when your shell is running
do_taskpart, you press Ctrl+C, your script is interrupted and stopped, but those temporary files never get cleaned up.To fix this, you can add
trap clean_temporary_files 2to your script, which will caught theCtrl+Csignal (#2 SIGINT), then it will do theclean_temporary_filesfunction.Very interesting,
Thanks