Re: nohup breaks logname and tty commands

[Andreas Schwab]

Eric Blake <address@hidden> writes:

> According to ROTH, MATTHEW G (ATTSI) on 2/22/2008 9:06 AM:
> | In RHEL 5 with coreutils 5.97 the following does not work:
> |
> |     $ /usr/bin/nohup /usr/bin/logname
> |     /usr/bin/nohup: appending output to `nohup.out'
> |
> |     $ cat nohup.out
> |     /usr/bin/logname: no login name
>
> I'm not sure why that is failing for you.  It worked just fine for me:
> $ logname
> eblake
> $ nohup logname
> nohup: ignoring input and appending output to `nohup.out'
> $ cat nohup.out
> eblake
> $ nohup --version | head -n1
> nohup (GNU coreutils) 6.10
> $ logname --version | head -n1
> logname (GNU coreutils) 6.10
>
> Perhaps an strace would shed some light?

That appears to be a bug in glibc in that getlogin uses the terminal
connected to stdin instead of the controlling terminal.

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
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