SC2039 "In POSIX sh, echo flags are undefined." triggered for /bin/echo - Githubissues

koalaman / shellcheck

ShellCheck, a static analysis tool for shell scripts

https://www.shellcheck.net

GNU General Public License v3.0

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SC2039 "In POSIX sh, echo flags are undefined." triggered for /bin/echo #1593

Open ribx opened 5 years ago

ribx commented 5 years ago

For bugs

Rule Id: SC2039
My shellcheck version: integrated in hadolint 1.16.3
[X] The rule's wiki page does not already cover this (e.g. https://shellcheck.net/wiki/SC2086)
[X] I tried on shellcheck.net and verified that this is still a problem on the latest commit

Here's a snippet or screenshot that shows the problem:

#!/bin/sh
/bin/echo -e "test\ntest"

Here's what shellcheck currently says:

Line 2:
/bin/echo -e "test\ntest"
          ^-- SC2039: In POSIX sh, echo flags are undefined.

Here's what I wanted or expected to see:

When I use /bin/echo it should not complain about "echo in POSIX sh", as I am using the binary and not the shell internal function.

abitrolly commented 1 week ago

@ribx maybe it is better to switch to printf for good? /bin/echo own help recommends it.

$ /bin/echo --help
...
NOTE: printf(1) is a preferred alternative,
which does not have issues outputting option-like strings.