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Full Discussion: Java program calling a UNIX command
Top Forums UNIX for Dummies Questions & Answers Java program calling a UNIX command Post 10454 by rwb1959 on Wednesday 14th of November 2001 12:38:27 PM
Old 11-14-2001
A good example of what you want is at...

http://www.devdaily.com/java/edu/pj/...pj010016.shtml

...the code snippit...

...
// run the Unix "ps -ef" command

Process p = Runtime.getRuntime().exec("ps -ef");

BufferedReader stdInput = new BufferedReader(new
InputStreamReader(p.getInputStream()));

BufferedReader stdError = new BufferedReader(new
InputStreamReader(p.getErrorStream()));

// read the output from the command

System.out.println("Here is the standard output of the command:\n");
while ((s = stdInput.readLine()) != null) {
System.out.println(s);
}

// read any errors from the attempted command

System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null) {
System.out.println(s);
}

...
 

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LEARN ABOUT CENTOS

browser::open

Browser::Open(3)					User Contributed Perl Documentation					  Browser::Open(3)

NAME

       Browser::Open - open a browser in a given URL

VERSION

       version 0.03

SYNOPSIS

	   use Browser::Open qw( open_browser );

	   ### Try commands specific to the current Operating System
	   my $ok = open_browser($url);
	   # ! defined($ok): no recognized command found
	   # $ok == 0: command found and executed
	   # $ok != 0: command found, error while executing

	   ### Try all known commands
	   my $ok = open_browser($url, 1);

DESCRIPTION

       The functions optionaly exported by this module allows you to open URLs in the user browser.

       A set of known commands per OS-name is tested for presence, and the first one found is executed. With an optional parameter, all known
       commands are checked.

       The "open_browser" uses the "system()" function to execute the command. If you want more control, you can get the command with the
       "open_browser_cmd" or "open_browser_cmd_all" functions and then use whatever method you want to execute it.

API

       All functions are not exported by default. You must ask for them explicitly.

   open_browser
	   my $ok = open_browser($url, $all);

       Find an appropriate command and executes it with your $url. If $all is false, the default, only commands that match the current OS will be
       tested. If true, all known commands will be tested.

       If no command was found, returns "undef".

       If a command is found, returns the exit code of the execution attempt, 0 for success. See the "system()" for more information about this
       exit code.

       If no $url is given, an exception will be thrown: "Missing required parameter $url".

   open_browser_cmd
	   my $cmd = open_browser_cmd();

       Returns the best command found to open a URL on your system.

       If no command was found, returns "undef".

   open_browser_cmd_all
	   my $cmd = open_browser_cmd_all();

       Returns the first command found to open a URL.

       If no command was found, returns "undef".

AUTHOR

       Pedro Melo, "<melo at cpan.org>"

COPYRIGHT &; LICENSE
       Copyright 2009 Pedro Melo.

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

perl v5.16.3							    2012-03-09							  Browser::Open(3)
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