Browsing AuthorCelso

October 29, 2004

Write To A Text File

This snippet will write a text file.


#include <fstream.h>

int main() {
    ofstream outfile("example.txt");
    if (outfile.is_open()) {
        outfile << "This is a line.n";
        outfile << "This is another line.n";
        outfile.close();
    }
    return 0;
}

October 11, 2004

Quick Command Line Arg parsing

To parse command line arguments passed to a script without using a module, parse @ARGV with the following:


foreach my $arg (@ARGV) {
    $a = 1, next if $arg eq '-a';
    $b = 1, next if $arg eq '-b';
    $c = 1, next if $arg eq '-c';
}

Note: This is good only for boolean (on/off) command line switches.

September 24, 2004

Debugging CGI Using ptkdb

ptkdb is a graphical Perl debugger. To use it when debugging command line scripts is very straight forward. Just type in the command line:


perl -d:ptkdb script.pl

and you’re good to go.

However, using it to debug CGIs needs some tweaking to your CGI source. Replace the usual

#!/usr/bin/perl

line at the top of the CGI script with this one:


#!/usr/bin/perl -d:ptkdb
BEGIN {$ENV{DISPLAY} = "$ENV{REMOTE_ADDR}:0.0";}

Go to your browser and invoke your CGI and a debugger window should pop up.

September 10, 2004

Change Behavior of iTunes Arrows

Starting with iTunes 4.5, Apple implemented those little grey arrows next to the song title, artist, and album, which will take you to the corresponding match in the iTunes Music Store. To change the behavior of these arrows so that instead of going to the store, it will take you to your library instead, you can do either one of two ways:

  1. Hit option key when you click the arrow.
  2. Change it permamnently by executing this from the terminal:

    defaults write com.apple.iTunes invertStoreLinks -bool YES

    

    Make sure iTunes is not running when you execute this command.
    3. 


                

                

            

            
            

            


				
					

        
                

                        
                                     September 8, 2004                            
                            

                    Enable Safari Debug Menu
                

                        
            

                
To enable Safari Debug menu from the command line:




% defaults write 
com.apple.Safari IncludeDebugMenu 1




Make sure Safari is not running when you run this command.