Why can't launchd run my shell script?

Hi,

I am trying to use launchd to run a shell script backing up my box to an external HD. The script (backupmgr.sh) uses rdiff-backup, and it runs as expected when I launch it from Terminal. This script includes email reporting to email me results of my backup attempt.

I modified an example .plist to run this script at 0330 every day. The .plist is in ~/Library/LaunchAgents, so it will only run when I'm logged in.

My problem is that, although the script runs perfectly from the Terminal, it fails (/Users/mindlab/backup/backup.sh: line 32: rdiff-backup: command not found) when launchd runs it. I cannot figure out why! How could a command be 'not found' from launchd when it works from Terminal?

I've attached the .plist below. Any help would greatly appreciated.

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">

<plist version="1.0">

<dict>

<key>Label</key>

<string>com.mindlab.backup</string>

<key>LowPriorityIO</key>

<false/>

<key>Nice</key>

<integer>1</integer>

<key>AbandonProcessGroup</key>

<true/>

<key>OnDemand</key>

<true/>

<key>ProgramArguments</key>

<array>

<string>/Users/mindlab/backup/backupmgr.sh</string>

</array>

<key>StartCalendarInterval</key>

<dict>

<key>Hour</key>

<integer>3</integer>

<key>Minute</key>

<integer>30</integer>

</dict>

</dict>

</plist>