#!/bin/bash
#
# prune.sh - prune backups, weed out any entries older than the most recent 3
#
# 20101013 - initial version (mth)
#
user="$1"

if [ -z "$1" ]; then
    echo "ERROR! Must be called with a user argument."
    exit 1
fi

if [ -e "/backup/$user" ]; then
    cd /backup/$user
    bckcnt="`/bin/ls -1A | wc -l`"

    if [ "$bckcnt" -gt 3 ]; then
        let removal=$bckcnt-3
        files="`/bin/ls -1A | head -$removal`"
        rm -f $files
    fi
fi

exit 0