Debugging websites

CSS:
element {
    outline: red solid thick;
    background: green;
};

PHP:
<?php $debug = $_GET['debug'] ?>

Email clients on Ubuntu

Linux email clients for Microsoft Exchange:

• Evolution: Ugh. Clunky. Hangs.
• "Microsoft Exchange" server type screen scrapes webmail
• MAPI needs the 'evolution-mapi' package from Ubuntu software centre
• Otherwise IMAP
• Thunderbird: Pfft. Also clunky. Hangs slightly less than Evolution, sometimes.

Diff fun with vi and svn

Diff two files side-by-side
(search for this to highlight differences only -- replace ^I with actual tabs -- / <^I| <$| >^I| >$| \|^I )
diff --side-by-side [a] [b] | less

Diff two files side-by-side using vi
(use Ctrl-W+W to switch sides; may need :syntax off to prevent colours clashing)
vimdiff [a] [b]

Subversion diff using vi
Step 1. Create a diff command script for svn (and set the execute bit):
#!/bin/sh
# Subversion provides the paths we need as the sixth and seventh parameters.
LEFT=${6}
RIGHT=${5%    (working copy)}
[ "$RIGHT" == "$5" ] && RIGHT=$7
# Call the diff command (change the following line to make sense for your merge program).
# diffopt+=iwhite ignores whitespace differences
# \<c-w>\<c-w> switches to the right-hand pane
vimdiff "+set diffopt+=iwhite" '+execute "normal \<c-w>\<c-w>"' $LEFT $RIGHT


Step 2. Create a diff script for you to use:
#!/bin/bash
# Call the diff command (change the following line to make sense for your merge program).
# "-x -w" ignores all whitespace
svn diff -x -w --diff-cmd /path/to/diff/command/script/above $1


Step 3. Run the diff script
name_of_your_script [file in workspace]