Re: [Help]Build a tool/application using Perl

[daxim]

ssh to a server then issuing commands […] issue "date" - get outputs and push them into a variable @tmp

Net::SSH::Any seems easiest to me.

#!/usr/bin/env perl
use Net::SSH::Any qw();
my $ssh = Net::SSH::Any->new('192.168.1.10', user => 'root', password 
+=> '123456');
my @tmp = $ssh->capture('date');

How to build an application?

Perhaps Module::Build::Tiny? You need to explain what you want to achieve because "build" can mean different things.

Simple Perl programs do not require a building step, they can be run as-is.

[tctoa]

Thank you daxim,

Look like this does not work.

use Net::SSH::Any qw();
my $ssh =
  Net::SSH::Any->new( '172.20.251.20', user => 'root', password => 'r3
+v3nue' );
my @tmp = $ssh->capture('ls -lrt');
print " @tmp";

Output:

 Use of uninitialized value $tmp[0] in join or string at test.pl line 7.

For the application, please be explained again. I try to give an simple example to easier: - Using Perl to have a script to detect an even number from a number input from keyboar - Create an application base on this script. This can be installed on Windowns. Then, when I wannna find I only need to run the app instead of executing perl "script.pl" I am sorry, I cannot use exactly works to describe.

[daxim]

I only need to run the app instead of executing perl "script.pl"

That's called "compile to a standalone executable". See pp or staticperl or perlcc.

It's easier to just associate the .pl file extension, so when you attempt to run a .pl file (for example by double-clicking in a file manager), it executes Perl automatically. When you use the Strawberry Perl installer, it does that association for you already.

[Corion]

Consider adding error handling, as documented in Net::SSH::Any:

my @tmp = $ssh->capture('ls -lrt');
$ssh->error and die "'ls -lrt' failed: " . $ssh->error;

[tctoa]

Thanks Corion, It works fine on Linux platform, and not work on Windowns for SSH But everytime I issue $ssh->capture($cmd), I need to input password again. my code:

use strict;
use warnings;
use Net::SSH::Any qw();
my $ssh =
  Net::SSH::Any->new( '172.21.71.197', user => 'root', password => 'r3
+v3nue' );
my @tmp = $ssh->capture('ls -lrt');

print "@tmp \n";
print "====================\n";
@tmp = $ssh->capture('date');
foreach (@tmp) {
    if ( $_ =~ /(\d+:\d+:\d+)/ ) {
        print "Time is $1";
        last;
    }
}

Output:

root@svr1087# perl test.pl
root@172.21.71.197's password: 
total 88
 -r-xr-xr-x. 1 root root   332 Apr 22  2015 patchC3iptablesCustom.sh
 -r-xr-xr-x. 1 root root   508 Apr 23  2015 jre1.6.sh
 dr-xr-xr-x. 2 root root  4096 Nov  8  2018 Adax
 -rw-r--r--. 1 root root  1807 Jul 19 17:55 preinstall.log
 -rw-r--r--. 1 root root  6782 Jul 19 17:58 install.log.syslog
 -rw-r--r--. 1 root root 25057 Jul 19 18:00 install.log
 -rw-------. 1 root root 10302 Jul 19 18:00 anaconda-ks.cfg
 -rw-r--r--. 1 root root 14788 Jul 19 18:03 postinstall.log
 -rw-r--r--  1 root root     4 Jul 22 14:11 hung_task_timeout_secs~
 
====================
root@172.21.71.197's password: 
Time is 05:06:39#                                                     
+                                                                     
+                                                                     
+   
root@svr1087#