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Extracting non-consecutive but related items from an array.

by blackadder (Hermit)
on Jun 15, 2005 at 08:37 UTC ( #466833=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
    server_A, Perl, UK
    server_A, Word, UK
    ...
    server_c, Lotus, USA
    server_c, TIB, USA
    server_A, Python, UK
    
  2. or download this
    server_A
             Perl  UK
    ...
             Evolution  USA
             Lotus  USA
             TIB  USA         
    
  3. or download this
    #! c:/perl/bin/perl.exe
    use strict;
    ...
        }    
        push (@cleaned_data, $rec);
    }
    

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Node Type: perlquestion [id://466833]
Approved by Corion
Front-paged by grinder
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[Corion]: But yes, "who started this process" is interesting information :)
[tye]: no, I really believe that "login user" was added as a fundamental bit of info about each process in order to enhance the usefulness of auditing
[Corion]: Ah - if that information is saved in a file, then you could theoretically spam that file and confuse getlogin(). So, don't use it for authentication :)
[tye]: that is what getlogin() certainly *used* to do. I don't believe that is what it certainly should do.
[davido]: /var/run/utmp is 664 i think.
[tye]: Note that my "man getlogin" says that it uses stdin when it should use /dev/tty (calling a glibc bug). But that does not appear to be the case when I test it. But maybe Perl's getlogin() is not using glibc's getlogin().
[oiskuu]: well, run a strace and see what the getlogin does for you.... As I said. SELinux probably has those security labels. But not regular linux.
[tye]: for example, read https://unix. stackexchange.com/ questions/146138/ loginuid-should-be -allowed-to-change -or-not-mutable-or -not
[tye]: I'm not using SELinux and it certainly appears to disagree with you. shrug
[tye]: Since you brought up /proc, oiskuu, I didn't see you respond to my suggestion of 'loginuid'. Does your /proc not have such?

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