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Full Discussion: Custom exit message according to flag
Top Forums Shell Programming and Scripting Custom exit message according to flag Post 303045136 by da1 on Thursday 12th of March 2020 12:39:24 PM
Old 03-12-2020
Custom exit message according to flag
Hello everyone,

I'm currently working on a script that uses curl's to check internet connectivity with and without a proxy being specified.
Basically what I'd like to achieve is having the script output fail or success according to the "method" used (direct or via proxy).

A very ugly way of doing it:
Code:
 # "curl_args" contains "-x $2" and gets set if $2 exists
curl ${curl_args} "$1" &> /dev/null

if [ $? == 0 ]; then
   if [ "$#" == 1 ]; then
      printf "OK - able to connect to $1\n"
      exit 0
   elif [ "$#" == 2 ]; then
      printf "OK - able to connect to $1 from $2\n"
      exit 0
   fi
else
   if [ "$#" == 1 ]; then
      printf "CRITICAL - unable to connect to $1\n"
      exit 1
   elif [ "$#" == 2 ]; then
      printf "CRITICAL - unable to connect to $1 from $2\n"
      exit 1
   fi

The script expects 2x arguments. The first one is the URL and the second one is the proxy address.

Whats a more dynamic way of writing that ugly if statement?
 

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LEARN ABOUT DEBIAN

net::proxy::connector::connect

Net::Proxy::Connector::connect(3pm)			User Contributed Perl Documentation		       Net::Proxy::Connector::connect(3pm)

NAME

       Net::Proxy::Connector::connect - Create CONNECT tunnels through HTTP proxies

SYNOPSIS

	   # sample proxy using Net::Proxy::Connector::tcp
	   #		    and Net::Proxy::Connector::connect
	   use Net::Proxy;

	   # listen on localhost:6789
	   # and proxy to remotehost:9876 through proxy.company.com:8080
	   # using the given credentials
	   my $proxy = Net::Proxy->new(
	       in  => { type => 'tcp', port => '6789' },
	       out => {
		   type        => 'connect',
		   host        => 'remotehost',
		   port        => '9876',
		   proxy_host  => 'proxy.company.com',
		   proxy_port  => '8080',
		   proxy_user  => 'jrandom',
		   proxy_pass  => 's3kr3t',
		   proxy_agent => 'Mozilla/4.04 (X11; I; SunOS 5.4 sun4m)',
	       },
	   );
	   $proxy->register();

	   Net::Proxy->mainloop();

DESCRIPTION

       "Net::Proxy::Connecter::connect" is a "Net::Proxy::Connector" that uses the HTTP CONNECT method to ask the proxy to create a tunnel to an
       outside server.

       Be aware that some proxies are set up to deny the creation of some outside tunnels (either to ports other than 443 or outside a specified
       set of outside hosts).

       This connector is only an "out" connector.

CONNECTOR OPTIONS

       "Net::Proxy::Connector::connect" accepts the following options:

"out"
       o   host

	   The destination host.

       o   port

	   The destination port.

       o   proxy_host

	   The web proxy name or address.

       o   proxy_port

	   The web proxy port.

       o   proxy_user

	   The authentication username for the proxy.

       o   proxy_pass

	   The authentication password for the proxy.

       o   proxy_agent

	   The user-agent string to use when connecting to the proxy.

AUTHOR

       Philippe 'BooK' Bruhat, "<book@cpan.org>".

BUGS

       All the authentication schemes supported by "LWP::UserAgent" should be supported (we use an "LWP::UserAgent" internally to contact the
       proxy).

       This means we should also support NTLM, since it is supported as from "libwww-perl" 5.66. "Net::Proxy::Connector::connect" has not been
       actually tested with NTLM, though. Any report of success or failure with a NTLM proxy will be appreciated.

HISTORY

       This module is based on my script "connect-tunnel", that provided a command-line interface to create tunnels though HTTP proxies.  It was
       first published on CPAN on March 2003.

       A better version of "connect-tunnel" (using "Net::Proxy") is provided this distribution.

COPYRIGHT

       Copyright 2006 Philippe 'BooK' Bruhat, All Rights Reserved.

LICENSE

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.10.1							    2009-10-18				       Net::Proxy::Connector::connect(3pm)
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