fuckin' waaaaah...

check-backups

#!/bin/bash

# Debugging
exec 2> /mnt/sto/tmp/debug-check-backups
set -x

# Check timemachine backups

# Vars
TMDIR=/mnt/sto/backup/timemachine
RESULTS=com.apple.TimeMachine.Results.plist
# Number of days without backups to trigger a warning
WARN=7

# Options processing
while getopts ":w:c:h" opt
do
        case $opt in
                w)      WARN=$OPTARG;;
                c)      echo "It's not really that critical, is it?"; exit 1;;
                *)      echo "usage: $0 [-w WARN]"; exit 1;;
        esac
done

# Define the base find command
findcmd="/usr/bin/find $TMDIR -maxdepth 2 -type f -name $RESULTS"

# Check the timemachine directory and make sure we find the results file
out="$($findcmd 2>&1)"

# If we get no output from the base find command, something's gone wrong.
if [[ -z $out ]]
then
        echo "WARNING: Unable to find any files matching $RESULTS in $TMDIR."
        exit 1
fi

# Run the same find command and limit it to the warn timeframe
out="$($findcmd -mtime +$WARN 2>&1)"

# Process the output
if [[ -z $out ]]
then
        echo "OK: All backups are within the past $WARN days"
        exit 0
else
        # Kinda an ugly, big-hammer approach to sending the output, but it works.
        echo "WARNING: The following backups are older than $WARN days: $(echo "$out" | /usr/bin/awk -F '[/.]' '{print $6}' | /usr/bin/tr '\n' ', ' | /usr/bin/sed 's/,$//')"
        exit 1
fi