1 SC3029

Vidar Holen edited this page 2022-11-02 20:53:47 -07:00

Table of Contents

• In POSIX sh, |& in place of 2>&1 | is undefined.
• Problematic code:
• Correct code:
• Rationale:
• Exceptions:
• Related resources:

In POSIX sh, |& in place of 2>&1 | is undefined.

Problematic code:

#!/bin/sh
make |& tee ~/log

Correct code:

Either switch to bash:

#!/bin/sh
make 2>&1 | tee ~/log

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.

In this case, the non-portable shorthand |& to pipe both stdout and stderr can be easily replaced with its written out form 2>&1 | as shown.

Exceptions:

None

Related resources:

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

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