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Linux Pocket Guide
book

Linux Pocket Guide

by Daniel J. Barrett
February 2004
Beginner content levelBeginner
200 pages
5h 40m
English
O'Reilly Media, Inc.
Content preview from Linux Pocket Guide

Exiting with a Return Code

The exit command terminates your script and passes a given return code to the shell. By tradition, scripts should return 0 for success and 1 (or other nonzero value) on failure. If your script doesn’t call exit, the return code is automatically 0.

if [ $# -lt 2 ]
then
  echo "Error: you must supply two arguments"
  exit 1
else
  echo "My name is $1 and I come from $2"
fi
exit 0
$ ./myscript Bob
./myscript error: you must supply two arguments
$ echo $?
1
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Publisher Resources

ISBN: 9780596806347Errata Page