Remote ssh and return values.. Post: 302420200

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Top Forums Shell Programming and Scripting Remote ssh and return values.. Post 302420200 by deindorfer on Tuesday 11th of May 2010 03:02:13 AM

05-11-2010

Registered User

Using Net::SSH::Perl To Find A Pattern in a remote file and print info on matched file

Quote:

Originally Posted by radoulov

Or, of course, use Net::SSH:Perl if it's available.

Here's How You Can Do That:

Code:

#! /usr/bin/perl

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

my $user = '';
my $pass = '';
my $host = '';
my $port = 22;
my $DEBUG = 0;
my $attr = { debug => $DEBUG, port => $port, protocol => '2,1'};

my $cmd = qq~perl -lne 'if ( /(PAT_HERE)/ ) { printf "PATTERN: %s LINE: %d FILE: %s INODE %s", \$1, \$., \$ARGV, (stat \$ARGV)[1]; }' *~;
my $ssh = Net::SSH::Perl->new($host, %$attr);
$ssh->login($user, $pass);
my ($stdout, $stderr, $exit) = $ssh->cmd($cmd);
print $stdout, "\n";

The above code expects you to replace the string "PAT_HERE" with the one you are looking for.

The code searches the files in the user-you-logged-in-as' ( $user ) home directory. If you want to search in other directories change the "cmd" line to something like this, where the the string " \/some\/dir\/* " is a directory you want to search:

Code:

my $cmd = qq~perl -lne 'if ( /(PAT_HERE)/ ) { printf "PATTERN: %s LINE: %d FILE: %s INODE %s", \$1, \$., \$ARGV, (stat \$ARGV)[1]; }' \/some\/dir\/*~;

More effort will be required if you want to handle situations in which no matches are returned gracefully.

Hope That Helps.

Last edited by deindorfer; 05-11-2010 at 04:13 AM.. Reason: Add Escaping Slashes

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ssh-argv0

SSH-ARGV0(1)                                                BSD General Commands Manual                                               SSH-ARGV0(1)

NAME

     ssh-argv0 -- replaces the old ssh command-name as hostname handling

SYNOPSIS

     hostname | user@hostname [-l login_name] [command]

     hostname | user@hostname [-afgknqstvxACNTX1246] [-b bind_address] [-c cipher_spec] [-e escape_char] [-i identity_file] [-l login_name]
     [-m mac_spec] [-o option] [-p port] [-F configfile] [-L port:host:hostport] [-R port:host:hostport] [-D port] [command]

DESCRIPTION

     ssh-argv0 replaces the old ssh command-name as hostname handling.  If you link to this script with a hostname then executing the link is
     equivalent to having executed ssh with that hostname as an argument.  All other arguments are passed to ssh and will be processed normally.

OPTIONS

     See ssh(1).

FILES

     See ssh(1).

AUTHORS

     OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen.  Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos,
     Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH.  Markus Friedl contributed the support for SSH
     protocol versions 1.5 and 2.0.  Jonathan Amery wrote this ssh-argv0 script and the associated documentation.

SEE ALSO

     ssh(1)

Debian Project                                                   September 7, 2001                                                  Debian Project

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