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ps(1): Add a standard exit status section.
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Authored by 0mp on Sep 13 2018, 7:41 AM.
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Approved, thanks for working on it.

This revision is now accepted and ready to land.Sep 13 2018, 9:30 AM
0mp added subscribers: krion, mat.

@mat, @krion, may I have your approval?

This is not wrong, but perhaps some details about different types of errors may be helpful, such as that nonexistent usernames in -U are immediately fatal while an empty result (such as from only nonexistent process IDs in -p or only existing users that do not currently run any process in -U) still writes the header line (if not disabled) and also returns a non-zero exit status.

This revision was automatically updated to reflect the committed changes.

@jilles do you think we could open another PR for your suggestions?

This is not wrong, but perhaps some details about different types of errors may be helpful, such as that nonexistent usernames in -U are immediately fatal while an empty result (such as from only nonexistent process IDs in -p or only existing users that do not currently run any process in -U) still writes the header line (if not disabled) and also returns a non-zero exit status.

I've created a PR for this: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232852