Openwrt backup script

backup.sh

#!/usr/bin/env sh

SD_MOUNT="$(echo "$(mount | grep '/dev/mmcblk.* on /mnt/mmcblk' | sed -e 's/\/dev\/mmcblk.* on \(\/mnt\/mmcblk.*\) type.*/\1/')")"
if [ -z $SD_MOUNT ]; then
    echo "SD Card missing. Saving to /tmp"
    BACKUP_PATH="/tmp"
else
    BACKUP_PATH="${SD_MOUNT}/backup"
fi

# Generate backup
umask go=
sysupgrade -b $BACKUP_PATH/backup-${HOSTNAME}-$(date +%F).tar.gz
ls $BACKUP_PATH/backup-*.tar.gz
 
#From the client, download backup 
#scp [email protected]:/tmp/backup-*.tar.gz .