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authorErich Eckner <git@eckner.net>2018-10-09 21:13:54 +0200
committerErich Eckner <git@eckner.net>2018-10-09 21:13:54 +0200
commita7117c08a9a8253f2fcb849199f1334be204ad74 (patch)
treee8a2c03ebe369c2de8db6543f07fa299a5983a54 /removeOldBackups.in
parent376295a42191a005483b54be19493b9e9676b445 (diff)
downloadhardlinkedBackups-a7117c08a9a8253f2fcb849199f1334be204ad74.tar.xz
removeOldBackups new
Diffstat (limited to 'removeOldBackups.in')
-rwxr-xr-xremoveOldBackups.in66
1 files changed, 66 insertions, 0 deletions
diff --git a/removeOldBackups.in b/removeOldBackups.in
new file mode 100755
index 0000000..67d0828
--- /dev/null
+++ b/removeOldBackups.in
@@ -0,0 +1,66 @@
+#!/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