restic: add page (#1943)

pages/common/restic.md

@@ -0,0 +1,23 @@
+# restic
+
+> Fast, secure, efficient backup program.
+
+- Initialize a backup repository in the specified local directory:
+
+`restic init -r {{path/to/repository}}`
+
+- Backup folder "my_folder" to the repository:
+
+`restic -r {{path/to/repository}} backup {{path/to/my_folder}}`
+
+- Show backup snapshots currently stored in the repository:
+
+`restic -r {{path/to/repository}} snapshots`
+
+- Restore a specific backup snapshot to a target directory:
+
+`restic -r {{path/to/repository}} restore {{snapshot_id}} {{path/to/target}}`
+
+- Clean up the repository and keep only the most recent snapshot of each unique backup:
+
+`restic forget --keep-last 1 --prune`