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Re: Confusing grep behavior

by grep (Monsignor)
on Dec 04, 2007 at 21:19 UTC ( #654958=note: print w/replies, xml ) Need Help??

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  1. or download this
    my @res = grep $_ split(",", "a,b,c,d,,f,,h"); #is a syntax error.
    
  2. or download this
    my @res = grep $_, split(",", "a,b,c,d,,f,,h");
    

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[davido]: I am not finding closing STDIN to be an adequate means of making getlogin return undef.
[Corion]: Maybe doing a double-fork (daemonizing) can make go that information away, but maybe not
[Corion]: But I think my knowledge of unix/Linux datastructures is several decades out of date, so I don't really know what information it keeps on processes
[oiskuu]: The useful bits that relate to your process can be found under /proc/self. What information are you thinking of? Tty name?
[tye]: I just daemonized and getlogin() still knew who I had been.
[tye]: perhaps loginuid ? Not that I concede that something not being in /proc means it is not useful.

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