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From:	Eric Backus <eric_backus AT alum DOT mit DOT edu>
Subject:	Re: history (was Re: base-files: LOGNAME)
Date:	Mon, 28 Jun 2010 12:04:04 +0000 (UTC)
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Cyrille Lefevre writes:

> sunos, login(1) both set USER and LOGNAME using pwd->pw_name
... 
> solaris, login(1) only set LOGNAME
...
> sys5r4, same as solaris, but
...
> irix, login(1) and logname(1) does as sunos
...
> osf1, login(1) does as sunos, logname(1) as solaris

At least historically, HP-UX login(1) set LOGNAME but not USER.

On the other hand, historically some su programs set USER but not LOGNAME.

-- 
Eric Backus


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