Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

Re^2: Module to parse output from Unix ps command?

by Krambambuli (Deacon)
on Apr 11, 2013 at 10:47 UTC ( #1028115=note: print w/ replies, xml ) Need Help??


in reply to Re: Module to parse output from Unix ps command?
in thread Module to parse output from Unix ps command?

Using split's third possible argument too instead of just /\s+/, you'd preserve the original spacing of the user command as well (assuming it's always the last column).


Krambambuli
---


Comment on Re^2: Module to parse output from Unix ps command?
Replies are listed 'Best First'.
Re^3: Module to parse output from Unix ps command?
by hdb (Prior) on Apr 11, 2013 at 11:32 UTC

    Thanks for this comment, I never heard about this third argument. Here is the updated script:

    use strict; use warnings; use Data::Dumper; my $command = "ps -f"; my $id = "PID"; my @ps =`$command`; $ps[0] =~ s/^\s*//; my @header = split /\s+/, shift @ps; my ($posid) = grep { $header[$_] eq $id } 0..$#header; die "$id: No such column!\n" unless defined( $posid ); splice @header, $posid, 1; my %psdata; while( @ps ) { my $row = shift @ps; chomp $row; $row =~ s/^\s*//; my @row = split /\s+/, $row, $#header+2; my $this_id = splice @row, $posid, 1; @{$psdata{$this_id}}{@header} = @row; } print Dumper( %psdata );

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1028115]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (5)
As of 2015-07-28 01:36 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (251 votes), past polls