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SC2172

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koalaman edited this page Nov 1, 2015 · 2 revisions

Trapping signals by number is not well defined. Prefer signal names.

Problematic code:

trap myfunc 28

Correct code:

trap myfunc WINCH

Rationale:

Signal numbers can vary between platforms. Prefer signal names, which are fixed.

Signal numbers 1, 2, 3, 6, 9, 14 and 15 are specified as parts of the optional POSIX XSI and ShellCheck will not warn about these.

Exceptions:

None.

Enjoy what I am trying to create as I am the creator

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