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Snippets

Uninstalling MacPorts

In Snippets on 19 September 2009 with no comments

Having upgraded to Snow Leopard, I wanted to wipe out my MacPorts installation and start clean. I’ve had tons of stuff installed and updated from the past (three versions of each port, in fact). Here’s how to uninstall MacPorts.
The first step is to uninstall all the installed ports:
1sudo port -f uninstall installed
Then remove any trace [...]

Three steps to uninstalling MySQL on Mac OS X

In Snippets on 19 September 2009 with no comments

Here are three simple steps to uninstall the MySQL installation provided by MySQL.com. You should take care with these commands since a typo can obliterate portions of your OS, requiring a reinstall. If you’re comfortable with shell commands and understand what’s being done, here are the commands:
123sudo rm -rf "/usr/local/mysql*"
sudo rm -rf "/Library/StartupItems/MySQLCOM/"
Go to System [...]

How to find total file size in Linux

In Snippets on 7 September 2009 with no comments

DOS sums up the sizes of all the files it lists when using the dir command, but Linux ls does not. Here’s an awk script that will calculate that information.
1ls -la [filenames] | awk ‘{ sum += $4 } END { print sum }’
An easier command (thanks Sunny):
1du -hs * –total

Mass renaming files in Linux

In Fleeting Thoughts, Snippets on 12 September 2007 with no comments

1ls -d *.ext | sed ’s/\(.*\).ext$/mv "&" "\1.newext"/’ | sh
Explanation here: Mass renaming with Linux shell

Code folding in VIM 6.0+

In Fleeting Thoughts, Snippets on 16 November 2006 with 2 comments

Here’s a neat little feature I’ve just been introduced to. After coding in VIM for so many years, one might think I’d know these things, but as it turns out, there’s a lot of features in VIM I’m not using. This one, however, will likely be a time-saver. There are a number of different code [...]

Forcing an SSL Redirect in Apache

In Fleeting Thoughts, Snippets on 14 November 2006 with no comments

If you’ve ever needed to ensure that users are accessing a folder using SSL, you can use the following mod_rewrite snippet to achieve this:
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

ExternalInterface, Internet Explorer and Callbacks

In Fleeting Thoughts, Snippets on 16 August 2006 with no comments

Whatever you do, don’t create callbacks named ’stop’ or ‘play’ via:
ExternalInterface.addCallback(“play”, null, thisFunc);
ExternalInterface.addCallback(“stop”, null, thatFunc);
Internet Explorer will choke a most horrible script execution error. Having a broken Internet Explorer script debugger didn’t help much either. Firefox showed no problems with this terminology.

Rebuild RRDTool when upgrading cPanel’s Perl

In Fleeting Thoughts, Snippets on 10 June 2006 with 2 comments

If you’ve upgraded Perl in cPanel, you need to make sure you’ve got an up-to-date build of rrdtool or stats will not run properly on the server. To do this, run:
/scripts/rrdtoolinstall
If there is no output, you will have to manual edit the file and comment out the version comparison to force the rebuild. You [...]