Re^3: Net::SSH::Perl doesn't execute commands

[Khen1950fx]

You haven't given a valid command yet.

$ssh->cmd("show 1b vserver $csvserver");

That's not a command that ssh will recognize.

$ssh->cmd("ls /path/to/csvserver");

That would be a valid command because it's a "system command". I've noticed that a lot of programmers that are new to ssh make the same mistake. I would split the script in to two scripts. The first part would ssh the second part; hence, $ssh->cmd("perl showthis.pl"); would work.

Update: Here's the first part:

#!/usr/bin/perl

use strict;
use Net::SSH::Perl;

my $host = 'localhost';
my $user = 'username';
my $pass = 'password';
my $cmd  = 'perl /path/to/showthis.pl';

my $ssh = Net::SSH::Perl->new(
          $host, 
          protocol => '2',
          debug    => 1,
);
$ssh->login( $user, $pass );

my ( $stdout, $stderr, $exit ) = $ssh->cmd($cmd);
print "$stdout\n";

Update: Here's showthis.pl

#!/usr/bin/perl

use strict;
use warnings;

my $dir = "$ENV{HOME}/data";
open LBVSERVERS, '<', "$dir/lb-vserver"
  or die "Couldn't open file: $!";
open CSVSERVERS, '<', "$dir/cs-vserver"
  or die "Couldn't open file: $!";

print "\n\n\n\n\n**********LB VSERVERS**********\n\n\n\n\n";
while ( my $line = <DIR> ) {
    chomp $line;
    my ( $number, $dir ) = split( /\s+/, $line );
    print "show lb vserver $lbvserver\n";
    print "Ready for next lb vserver? (y/n): ";
    chomp( my $ans = <STDIN> );
    if ( $ans =~ /y|Y/ ) {
        next;
    }
    else {
        last;
    }
}

print "\n\n\n\n\n**********CS VSERVERS**********\n\n\n\n\n";
while ( my $line = <DIR> ) {
    chomp $line;
    my ( $number, $dir ) = split( /\s+/, $line );
    print "show lb vserver $csvserver\n";
    print "Ready for next lb vserver? (y/n): ";
    chomp( my $ans = <STDIN> );
    if ( $ans =~ /y|Y/ ) {
        next;
    }
    else {
        last;
    }
}
print "\n\n\nEnd of line.\n\n\n";

close LBVSERVERS;
close CSVSERVERS;

[bluethundr]

This is a really nice, clean version of the script. Excellent work!

Well I have to admit that I'm really puzzled at this point! Because I cannot find "show" nowhere on this system. It only works if you 1) ssh into the box and operate within the proprietary netscaler environment or 2) if you issue the commands remotely via ssh.

If I execute a "shell" command within the netscaler software to get to a unix shell, this is the result of my best efforts to find the command called "show".



root@ns# find / -name "show" -print
root@ns# show
-bash: show: command not found
root@ns# echo $PATH 
/netscaler:/bin:/sbin:/usr/bin:/usr/sbin:/usr/libexec:/usr/local/bin:/
+usr/local/sbin:.
root@ns# grep -ri show $PATH
grep: /netscaler:/bin:/sbin:/usr/bin:/usr/sbin:/usr/libexec:/usr/local
+/bin:/usr/local/sbin:.: No such file or directory
root@ns#



What gives? I'm starting to feel like there is some voodoo going on with this box that I don't completely grok! Do I have to somehow invoke the netscaler shell first,before I do anything else?

This is the contents of a directory called "/netscaler" that has a bunch of commands and scripts in it, that I can't seem to make heads or tails of. Most of them are binaries (not scripts) so I can't even "less" them to see what they contain. weird!

root@ns# ls
CITRIX            nscachemgr        nssavecore.sh
aaa_inform_kern        nscgdb            nssh
api            nscli            nssslgen
aslearn            nsconf            nsstart.sh
aslearn.conf        nsconfig        nsstartpe.sh
bgpd            nsconfigaudit        nsstop.sh
filterwsdl        nsconfmig        nssync
htmlinjection        nsconmsg        nssync.sh
icsearch.sh        nscrlrefresh        nstcpdump.sh
icstats            nsdiskspace.sh        nstrace.sh
imi            nsdme            nstune
imish            nsdrevent        nsumon.sh
install.pl        nsdynrouting        nsumond
lmgrd            nsfsyncd        nsvpnd
lmstat            nsgslbconf        nswsrun
lmutil            nsif            ospfd
lmver            nslcd            pitboss
man            nslcdinit.sh        portal
migrate_ZebOS.sh    nslog.sh        ripd
netscaler.conf        nsm            rwpol
netscaler.sh        nsmap            samedit
ns_gui            nsnetsvc        showtechsupport.pl
nsaaad            nsospf            snmp
nsapimgr        nsp            snmpd
nsaudit            nsproflog.sh        vpnsetup
nsauth_httpd        nsprofmon        vtysh
nsauthd            nsreadfile
nsbgp            nsrip