update

1 files changed, 4 insertions, 2 deletions

diff --git a/bin/byo b/bin/byo
index 389e112..bc09fb8 100755
--- a/bin/byo
+++ b/bin/byo
@@ -2,7 +2,7 @@
 # Backup to yoda
 [ "$USER" = root ] || exec sudo "$0" "$@"
 
-usage='Usage: byo [-cdk]
+usage='Usage: byo [-cdk] [/dev/sda2]
 Backup local disk to yoda external disk.
 
 Options:
@@ -19,10 +19,12 @@ while getopts :Ccdk opt; do
 done
 shift $((OPTIND - 1))
 
+dev=$1
 yoda_uuid='8c463221-6bb7-414e-9060-c9570bb3a6bb'
+[ "$dev" ] || dev=$(blkid --uuid "$yoda_uuid")
 
 dest=/mnt/backup/$(hostname)
-[ -b /dev/mapper/yoda ] && noclose=1 || cryptsetup open "$(blkid --uuid "$yoda_uuid")" yoda
+[ -b /dev/mapper/yoda ] && noclose=1 || cryptsetup open "$dev" yoda
 findmnt /dev/mapper/yoda /mnt >/dev/null && noumount=1 || mount /dev/mapper/yoda /mnt
 time backup -v -d "$dest"
 [ ! "$optC" ] || backup -v -d "$dest" clean