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#!/bin/sh
# moses -- make backups
set -e
CMD=$1
DIR=$2
usage() {
echo "usage:\n\
moses new <directory> - make a new backup\n\
moses del <directory> - delete the oldest backup"
exit 1
}
if [ -z $CMD ]; then usage; fi
if [ -z $DIR ]; then usage; fi
new() {
NAME=$DIR-$(date +%s).bak
echo "creating $NAME..."
cp -r $DIR $DIR-$(date +%s).bak
}
del() {
OLDEST=$(find $(dirname $DIR) \
-name "$(basename $DIR)-*.bak" \
| sort \
| head -n 1)
echo "deleting $OLDEST..."
rm -r $OLDEST
}
$CMD || usage