Allow extra args to restic-backup with RESTIC_BACKUP_EXTRA_ARGS

Fixes #56

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Allow extra arguments to restic-backup with `$RESTIC_BACKUP_EXTRA_ARGS`.
+
 ### Changed
 - Align terminology used in README with the one used by B2 for credentials (keyId + applicationKey pair).
 

etc/restic/_global.env.template

@@ -19,3 +19,6 @@ export B2_ACCOUNT_KEY="<b2-application-key>" # TODO fill with your applicationKe
 
 # How many network connections to set up to B2. Default is 5.
 export B2_CONNECTIONS=10
+
+# Extra args to restic-backup. This is empty here and profiles can override this after sourcing this file.
+export RESTIC_BACKUP_EXTRA_ARGS=

etc/restic/default.env.template

@@ -32,3 +32,9 @@ export RETENTION_DAYS=14
 export RETENTION_WEEKS=16
 export RETENTION_MONTHS=18
 export RETENTION_YEARS=3
+
+# Optional extra arguments to restic-backup.
+# Example: Add two additional exclude files to the global one in RESTIC_PASSWORD_FILE.
+#RESTIC_BACKUP_EXTRA_ARGS="--exclude-file /path/to/extra/exclude/file/a /path/to/extra/exclude/file/b"
+# Example: exclude all directories that have a .git/ directory inside it.
+#RESTIC_BACKUP_EXTRA_ARGS="--exclude-if-present .git"

usr/local/sbin/restic_backup.sh

@@ -52,6 +52,7 @@ restic backup \
 	--tag $BACKUP_TAG \
 	--option b2.connections=$B2_CONNECTIONS \
 	$exclusion_args \
+	$RESTIC_BACKUP_EXTRA_ARGS \
 	$BACKUP_PATHS &
 wait $!