Index: duply.sh
===================================================================
--- duply.sh	(revision 29)
+++ duply.sh	(working copy)
@@ -37,6 +37,9 @@
 #    e.g. backup_AND_verify_AND_purge, pre_and_bkp_and_post
 #  - import/export profile from/to .tgz function !!!
 #
+#  UNRELEASED:
+#  - purge-inc command for remove-all-inc-of-but-n-full feature added
+#
 #  CHANGELOG:
 #  1.5.10 (26.03.2013)
 #  - minor indent and documentation fixes
@@ -631,6 +634,10 @@
 # See duplicity man page, action "remove-all-but-n-full".
 #MAX_FULL_BACKUPS=1
 
+# Number of incremental sets to keep, Used for the "purge-inc" command.
+# See duplicity man page, action "remove-all-inc-of-but-n-full".
+# MAX_INC_BACKUP_SETS=1
+
 # activates duplicity --full-if-older-than option (since duplicity v0.4.4.RC3) 
 # forces a full backup if last full backup reaches a specified age, for the 
 # format of MAX_FULLBKP_AGE see duplicity man page, chapter TIME_FORMATS
@@ -1874,6 +1881,13 @@
     duplify remove-all-but-n-full "${MAX_FULL_BACKUPS}" \
           -- "address@hidden" "$BACKEND_URL"
     ;;
+  purge-inc)
+    MAX_INC_BACKUP_SETS=${ftpl_pars[0]:-$MAX_INC_BACKUP_SETS}
+    [ -z "$MAX_INC_BACKUP_SETS" ] && error "  Missing parameter <max_inc_backup_sets>. Can be set in profile or as command line parameter."
+  
+    duplify remove-all-inc-of-but-n-full "${MAX_INC_BACKUP_SETS}" \
+          -- "address@hidden" "$BACKEND_URL"
+    ;;
   restore)
     OUT_PATH="${ftpl_pars[0]}"; TIME="${ftpl_pars[1]:-now}";
     [ -z "$OUT_PATH" ] && error "  Missing parameter target_path for restore.