Fatal error: grep binary not found

[baxeno]

Describe the bug

Lynis hit a fatal error during System tools section.

Fatal error: grep binary not found

Version

• Distribution ptxdist 2020.10
• Lynis version 3.0.5

Expected behavior

1. I expected Lynis to output name of binary not found. Lynis is not looking for grep but egrep.
2. Don't use deprecated functions intended for historical applications.

Output
N/A

Additional context
Host is running GNU grep 3.3.

man page:

In addition, two variant programs egrep and fgrep are available.
egrep is the same as grep -E. fgrep is the same as grep -F.
Direct invocation as either egrep or fgrep is deprecated,
but is provided to allow historical applications that rely on
them to run unmodified.

[mboelen]

Thanks for reporting. If I understand correctly you don't have egrep on your system?

As a starter, I corrected the error message: 3a03af4

[baxeno]

Thanks for fixing the error message.

Yes, you are correct. My system does not have egrep or fgrep.

Am I suppose to do a manual alias egrep='grep -E' before running Lynis?

[mboelen]

Seeing that you are on an embedded Linux distribution, it makes sense that egrep and fgrep are missing. For now, you will have to alias it if the binaries are not there. I will make an action to migrate away from the usage of egrep.

Closing this issue after making the commit above and scheduled future action.