Process Exit and Recovery

Cleanup on Exit

Plan the Final Step

Cleanup should happen after success and failure. This example models the cleanup command and exit code instead of running a real trap.

Program

Play the script to choose the outcome and see the cleanup summary.

cleanup_exit_plan.sh 
#!/usr/bin/env bash

outcome=
temp_dir="tmp/run"
cleanup="rm -rf $temp_dir"
if [ "$outcome" = "ok" ]; then
    exit_code=0
else
    exit_code=1
fi
echo "$cleanup after $outcome exit=$exit_code"

#!/usr/bin/env bash

outcome=
temp_dir="tmp/run"
cleanup="rm -rf $temp_dir"
if [ "$outcome" = "ok" ]; then
    exit_code=0
else
    exit_code=1
fi
echo "$cleanup after $outcome exit=$exit_code"
cleanup Cleanup removes temporary work after the main flow ends.
exit code The exit code records whether the process should be treated as success or failure.
trap concept Real scripts often use traps for cleanup; this lesson models the final action without running one.