This may be a bit overkill, and definitely defines additional variables, but you could use a hash to store the command and any errors. 
#!/usr/bin/perl

use strict;
use warnings;
use Data::Dumper;
use Digest::MD5;
use IPC::Run qw( run timeout ) ;

my %syscalls;

runsyscall('/usr/bin/ls');
runsyscall('/bin/ls');
runsyscall('vipw');

print Dumper %syscalls;

sub runsyscall
{
    my @cmd = @_;

    my $digest = digestit(@cmd);
    my ( $in, $out, $err );
    $syscalls{$digest}{'cmd'} = qq|@cmd|;

    eval { run \@cmd, \$in, \$out, \$err, timeout 10 };

    if ($@)
    {
        $syscalls{$digest}{'exit'} = $@;
    }
    chomp ($err) if $err;
#    chomp ($out) if $out;
    $syscalls{$digest}{'err'} = $err || undef;
#    $syscalls{$digest}{'out'} = $out || undef;

}

sub digestit
{
    my @cmd = @_;
    my $sysdigest = Digest::MD5->new;
    $sysdigest->add(@cmd);

    return $sysdigest->hexdigest;
}

[download]


Ted
--
"That which we persist in doing becomes easier, not that the task itself has become easier, but that our ability to perform it has improved."
  --Ralph Waldo Emerson

In reply to Re: Is it possible to determine last executed command line? by tcf03
in thread Is it possible to determine last executed command line? by bdimych

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