1 SC3041

Vidar Holen edited this page 2022-11-02 21:06:52 -07:00

Table of Contents

• In POSIX sh, set flag -E is undefined
• Problematic code:
• Correct code:
• Rationale:
• Exceptions:
• Related resources:

In POSIX sh, set flag -E is undefined

(or any other option)

Problematic code:

#!/bin/sh
set -EB

Correct code:

Switch to a shell that supports these options, such as Bash:

#!/bin/bash
set -EB

Rationale:

Your script uses a shell feature not supported by the shebang. Either rewrite the script to be portable, or change the shebang to explicitly require a shell like Bash.

Most shell specific set flags are hard to emulate in POSIX, so use your best judgement as to whether you can make do without them, or if you should require a shell that supports them.

Exceptions:

None

Related resources:

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

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