SC2126 not always correct

[Nachtfeuer]

I do a lot of bash scripting - currently - for a ci/cd pipeline for one project but I'm probably not as deep in bash scripting like you, however ... following problem:

PROMPT="$(basename "$0") :: "

result=$(docker ps -a | grep DOES_NOT_EXIST | wc -l)
error_code=$?
echo "${PROMPT}result=${result}, error_code=${error_code}"

result=$(docker ps -a | grep -c DOES_NOT_EXIST)
error_code=$?
echo "${PROMPT}result=${result}, error_code=${error_code}"

The output of this script code is following

foo :: result=0, error_code=0
foo :: result=0, error_code=1

As you see ... the second variant with grep only fails. Obviously the count mechanism does work fine only when you have at least one entry. From this the "wc -l" variant works better except you can tell me how to solve the mentioned problem.

[ztombol]

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If yes, please see the followings and clarify the issue.

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[Nachtfeuer]

I'm sorry. Was intended for shellcheck. Just close please.

Am 29.09.2016 16:45 schrieb "Zoltán Tömböl" notifications@github.com:

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If yes, please use common sense and clarify the issue.

• Clearly specify what the issue is. What are you trying to do? What is the outcome you got and what is that you expected? People can't help you if they don't know what you want.
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[ztombol]

@Nachtfeuer no worries. I'm not the maintainer, so I can't close it. But you can.

[Nachtfeuer]

Accidentally wrong project. Will close it.