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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:
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sudo port -f uninstall installed [...]
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:
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sudo rm -rf "/usr/local/mysql*"
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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.
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ls -la [filenames] | awk ‘{ sum += $4 } END { print sum }’
An easier command (thanks Sunny):
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du -hs [...]
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ls -d *.ext | sed ‘s/\(.*\).ext$/mv "&" "\1.newext"/’ | sh
Explanation here: Mass renaming with Linux shell
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 [...]
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}
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.
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. [...]
