Debugging CGI Using ptkdb
September 24, 2004
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/perlline 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.
Change Behavior of iTunes Arrows
September 10, 2004
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:
- Hit option key when you click the arrow.
- 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.
Enable Safari Debug Menu
September 8, 2004
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.
Determine Disk Usage
September 7, 2004
This command will show the number of KBs used for all non-hidden files and folders in the current directory:
du -sk * | sort -rn