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#!/bin/bash
# removeOldBackups version #VERSION#
[ -r "#ETCDIR#/backup.conf" ] && \
. "#ETCDIR#/backup.conf"
usage () {
>&2 echo \
'Usage: removeOldBackups
Remove old backups keeping only one backup per month for all but the present year.
Options:
#HELPTEXT# #'
[ -n "$1" ] && exit $1
exit 1
}
if [ $# -eq 1 ]
then
if [ "$1" == "--help" ]
then
usage 0
elif [ "$1" == "--version" ]
then
>&2 echo '#VERSION#'
exit 0
fi
usage
elif [ $# -gt 1 ]
then
usage
fi
backups=$(
printf '%s\n' "${backups[@]}" | \
cut -d' ' -f1 | \
while read -r dir; do \
if [ $(ls "$dir" | wc -l) -lt 30 ]; then
continue;
fi
ls -1 "$dir" | \
sed -n '
s,^\([0-9]\{4\}\)_\([0-9]\{2\}\)_\([0-9]\{2\}\)$,'"${dir}"'\0 \3 \2 \1 '"${dir}"',
T
p
'
done
)
{
printf '%s\n' "${backups}" | \
sort -k5,5 -k4,4 -k3,3 -k2,2 -k1,1 | \
uniq -f2
printf '%s\n' "${backups}" | \
sed '
/ '"$(date +%Y)"' \S\+$/p
'
} | \
cut -d' ' -f1 | \
sort | \
uniq -u | \
while read -r dir; do
echo rm -rf --one-file-system "${dir}"
rm -rf --one-file-system "${dir}"
done
|
