3 files changed, 43 insertions, 0 deletions
diff --git a/stow/duplicity/.local/bin/backup b/stow/duplicity/.local/bin/backup
new file mode 100755
index 0000000..6324c05
--- /dev/null
+++ b/stow/duplicity/.local/bin/backup
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -euo pipefail
+
+set -o allexport
+# shellcheck source=../../.config/duplicity/config
+source ~/.config/duplicity/config
+set +o allexport
+
+source_directory=~
+excludes=~/.config/duplicity/excludes
+target_url=b2://"$B2_KEY_ID"@"$B2_BUCKET"
+
+# take a new full backup every month, incremental otherwise
+duplicity backup --full-if-older-than 1M --exclude-filelist "$excludes" "$source_directory" "$target_url"
+
+# keep 12 months of full backups
+duplicity remove-all-but-n-full 12 --force "$target_url"
+
+# keep 3 months of incremental backups
+duplicity remove-all-inc-of-but-n-full 3 --force "$target_url"
+
+# cleanup
+duplicity cleanup --force "$target_url"
+
+# show collection status
+duplicity collection-status "$target_url"
diff --git a/stow/duplicity/.local/share/systemd/user/backup.service b/stow/duplicity/.local/share/systemd/user/backup.service
new file mode 100644
index 0000000..c1adfde
--- /dev/null
+++ b/stow/duplicity/.local/share/systemd/user/backup.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Backup with duplicity
+After=network.target
+
+[Service]
+Type=oneshot
+ExecStart=bash ${HOME}/.local/bin/backup
diff --git a/stow/duplicity/.local/share/systemd/user/backup.timer b/stow/duplicity/.local/share/systemd/user/backup.timer
new file mode 100644
index 0000000..b7815d6
--- /dev/null
+++ b/stow/duplicity/.local/share/systemd/user/backup.timer
@@ -0,0 +1,9 @@
+[Unit]
+Description=Run backup every four hours
+
+[Timer]
+OnCalendar=*-*-* 0/4:15
+Persistent=true
+
+[Install]
+WantedBy=timers.target