Ensure backup's TRASH folder gets created and used properly.

bin/backup.sh

@@ -20,14 +20,15 @@ time="`which time`"
 
 # Ensure backup directory exists with correct permissions.
 mkdir -pv "$BACKUP_DIR"
-chmod -Rv 755 "$BACKUP_DIR"
+mkdir -pv "$BACKUP_DIR/TRASH"
+chmod -Rv 775 "$BACKUP_DIR"
 chown -Rv root:root "$BACKUP_DIR"
-cd "$BACKUP_DIR"
 
 # Remove the last backup.
 echo "`date` - Removing existing files."
-mv -v "$BASENAME"*"$TAG"* ~/TRASH/
-rm -v ~/TRASH/"${BASENAME}*${TAG}*.zip"
+cd "$BACKUP_DIR"
+mv -v "$BASENAME"*"$TAG"* TRASH/
+rm -v TRASH/*
 
 echo -e "\n`date` - Take down services for a cold backup."
 manage.sh -d