initial commit

1 files changed, 58 insertions, 0 deletions

diff --git a/home/bin/backup b/home/bin/backup
new file mode 100755
index 0000000..020e22e
--- /dev/null
+++ b/home/bin/backup
@@ -0,0 +1,58 @@
+#!/bin/bash
+set -e
+
+# source folder to back up, don't forget to add trailing slash
+: ${BACKUPSOURCE:="/home/jodersky/"}
+
+# backup root folder, i.e. the one that will contain all backups in separate sub-folders
+: ${BACKUPCAPSULE:="/media/jodersky/backup/backup/jakob/"}
+
+
+#destination folder to back up to
+destination="$BACKUPCAPSULE"/$(date +%Y-%m-%d_%H-%M-%S)
+
+#symbolic link to latest backup (if any)
+latest="$BACKUPCAPSULE/latest"
+
+# rsync options
+roptions=(
+    -a
+    -P
+    --copy-unsafe-links
+    --delete
+    --delete-excluded
+    --filter=": .rsyncignore"
+)
+
+# settings that are passed through arguments
+init=0; # initialise new backup
+dryrun=0; # perform a simulated run, don't backup any files
+
+# process arguments
+while [ $# -gt 0 ]
+do
+    if [ "$1" = "--init" ]; then
+    	init=1
+    elif [ "$1" = "-n" ]; then
+    	dryrun=1
+    else
+    	echo "invalid argument: $1"
+		exit 1
+	fi
+    shift
+done
+
+if [ $init -eq 0 ]; then
+	roptions+=(--link-dest="$latest")
+fi
+if [ $dryrun -eq 1 ]; then
+	roptions+=(-n)
+	roptions+=(-vv)
+fi
+
+rsync "${roptions[@]}" "$BACKUPSOURCE" "$destination"
+
+if [ $dryrun -eq 0 ]; then
+	rm -f $latest
+	ln -s "$destination" "$latest"
+fi