cleanup.sh - how to implement a shell destructor script in shell
cleanup.sh [CMD [ARGS...]]
cleanup.sh is a demo script of how to run a script destructor in shell.
Destructors consist in cleanup things the script has done (e.g. temporary files...)
It uses trap(1p) to setup a function to callback when script exits.
Without argument, the script runs its usage and exit success
$ ./cleanup.sh && echo okay
1234: ./cleanup.sh: Running usage...
Usage: ./cleanup.sh [CMD [ARGS]]
1234: ./cleanup.sh: usage returned 0!
okay
Here is an example of how to run an echo command that succeed
$ ./cleanup.sh echo "Hello, World!" && echo okay
1234: ./cleanup.sh: Running echo Hello, World!...
Hello, World!
1234: ./cleanup.sh: echo returned 0!
okay
Here is an example of how to run a command that fails (false)
$ ./cleanup.sh false && echo okay
1234: ./cleanup.sh: Running false...
1243: ./cleanup.sh: false returned 1!
Note: 1234 is the pid.
Written by Gaël PORTAY gael.portay@gmail.com
Copyright (c) 2015-2017 Gaël PORTAY
This program is free software: you can redistribute it and/or modify it under the terms of the MIT License.