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bug#30928: no error val returned by 'nice' failure?

From: Paul Eggert
Subject: bug#30928: no error val returned by 'nice' failure?
Date: Sat, 24 Mar 2018 14:09:21 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

L A Walsh wrote:
how do you tell if the resetting of the
priority worked or failed?

I guess you're supposed to look at stderr, which is what you did.

This is the way 'nice' has behaved for quite some time, and it's what POSIX specifies. We'd need a real good reason to change it, given that changing it would no doubt break stuff.

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