Make locator.updatedb run daily on Snow Leopard w/o hacking /System/Library

Alternatively, if you don't need wget specifically, Snow Leopard does come with curl which does many of the same things.

E.g., fetching your flair via wget:

wget http://apple.stackexchange.com/users/flair/2726.png

vs. fetching it with curl:

curl -O http://apple.stackexchange.com/users/flair/2726.png

Notably lacking from curl is wget's --mirror option, but it does have nifty fetching with patterns, which handles many of the same problems:

# Fetch flair images for users 2726 through 2730
curl -O http://apple.stackexchange.com/users/flair/[2726-2730].png

Several things come to mind:

• Did you wait overnight for it to run? launchctl load won't make it run out of sequence -- if you want to make it run at some time other than 3:15 am, use sudo launchctl start dk.revealit.NightlyRSyncBackup after it's loaded.

• Does the run-rsync script fire off any background processes, or does it do everything inline? 'Cause if the script exits and there are background processes still going, launchd thinks something has gone wrong and kills the background processes. If you don't want it to do this, add <key>AbandonProcessGroup</key><true/> to the .plist.

• Does the script depend on PATH including any nonstandard directories (e.g. /opt/local/bin or something like that)?

One useful debugging technique is to add something like:

<key>StandardOutPath</key>
<string>/var/root/NightlyRSyncBackup.out</string>
<key>StandardErrorPath</key>
<string>/var/root/NightlyRSyncBackup.err</string>

to the .plist and see what shows up in those files.