sudo rsync -a / /bk/bk_$(date +"%m%d%Y") --exclude=/bk --exclude=/media/* --exclude=/sys/* --exclude=/proc/* --exclude=/mnt/* --exclude=/tmp/*
sudo rsync -a bk_04142020 /
run/user/1000/gvfs" failed: Permission denied
ref https://blog.csdn.net/codemacket/article/details/77864770
sudo umount /run/user/1000/gvfsrm -rf /run/user/1000/gvfs