SC2266 – ShellCheck Wiki

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Use || for logical OR. Single | will pipe.

Problematic code:

if [ "$1" = "--verbose" ] | [ "$1" = "-v" ]
then
  verbose=1
fi

Correct code:

if [ "$1" = "--verbose" ] || [ "$1" = "-v" ]
then
  verbose=1
fi

Rationale:

ShellCheck found a test command followed by a |. This was undoubtedly intended as a logical OR (||).

Exceptions:

None

Related resources:

• Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!

ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.