Process Exit and Recovery

Exit Status

Decide the Next Step

Shell scripts use exit status values to decide whether later work should continue. Modeling the status keeps the lesson deterministic without exiting the replay.

Program

Play the script to choose a status and see the next-step decision.

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

status=
command="validate-config"
if [ "$status" -eq 0 ]; then
    result="continue"
else
    result="stop:$status"
fi
echo "$command:$result"

#!/usr/bin/env bash

status=
command="validate-config"
if [ "$status" -eq 0 ]; then
    result="continue"
else
    result="stop:$status"
fi
echo "$command:$result"
exit status An exit status is the numeric result of a command.
zero Status zero conventionally means success.
stop path A nonzero status should usually stop or recover before continuing.