Bash exit status

13 February 2022

Every linux or bash program has an exit status, these are the main points:

• exit status is an integer value
• exit statuses fall between 0 and 255
• all of the Bash builtins return an exit status of zero if they succeed and a non-zero status on failure
• the shell may use values above 125

These points are also used in programs written in high level language, such as Java, python,... , to inform the caller about the outcome.

References

• More information could be found in GNU documentation

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