CODEWITHSUNDEEP
shellservicedaemon
theTuxRacer
theTuxRacer

Reputation: 13869

Help regarding a shell script

I was creating a init.d service, and was reading a few scripts for reference. I found this one in a skeleton:

What does this snippet do? I get that this is a switch:case. I am asking about the case within the case.

case "$1" in
  start)
        echo test
        case "$?" in
                0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
                2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac

PS: Excuse the title, I couldn't think of a better name

Thanks.

Upvotes: 0

Views: 60

Answers (2)

code_martial
code_martial

Reputation: 1245

Seems like the actual script might have had something more substantial than 'echo test'. $? is the exit code returned by the echo command in this script. The inner case statement prints the log message that is appropriate for the termination code. 0|1 most likely is success. 2 is probably an error.

Upvotes: 2

akond
akond

Reputation: 16035

$? holds the exit code of the last executed command. If 0 - there were no errors.

Upvotes: 0

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