libexec/shellspec-shebang
On most OS, shebangs can only specify a single parameter. Open
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#!/bin/sh -u -u
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On most OS, shebangs can only specify a single parameter.
Problematic code:
#!/usr/bin/env bash -x
Correct code:
#!/usr/bin/env bash
set -x
Rationale:
Most operating systems, including POSIX, Linux and FreeBSD, allow only a single parameter in the shebang. The example is equivalent to calling env 'bash -x'
instead of env 'bash' '-x'
, and it will therefore fail.
The shebang should be rewritten to use at most one parameter. Shell options can instead be set in the body of the script.
Exceptions
macOS X currently allows multiple words in the shebang. Scripts running on OSX exclusively can ignore this warning.
Notice
Original content from the ShellCheck https://github.com/koalaman/shellcheck/wiki.