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1 SC3036
Vidar Holen edited this page 2022-11-02 21:03:32 -07:00
Table of Contents

In Dash, echo flags besides -n are not supported.

Problematic code:

#!/bin/dash
echo -e "Name:\t$USER"

Correct code:

#!/bin/dash
printf 'Name:\t%s\n' "$USER"

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, you can rewrite your use of echo using printf, which behaves the same across shells.

Exceptions:

None

Related resources:

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

ShellCheck

Each individual ShellCheck warning has its own wiki page like SC1000. Use GitHub Wiki's "Pages" feature above to find a specific one, or see Checks.