sudo mkdir -p /mnt/runimg
pi@raspberry47:~ $ mountpoint -q /mnt/runimg && echo "/mnt/runimg  mounted" || sudo mount --bind /media/netdir/raspbrreyPi/mnt_runimg    /mnt/runimg
mount: /mnt/runimg: special device /media/netdir/raspbrreyPi/mnt_runimg does not exist.
pi@raspberry47:~ $ ls -l /mnt/runimg/
total 0
pi@raspberry47:~ $ sudo mkdir -p ~/rpi_mnt
pi@raspberry47:~ $ sudo losetup -f -P --show /mnt/runimg/2020-02-13-raspbian-buster_jin-make.img
losetup: /mnt/runimg/2020-02-13-raspbian-buster_jin-make.img: failed to set up loop device: No such file or directory
pi@raspberry47:~ $ sudo mount /dev/loop0p2 -o rw ~/rpi_mnt
mount: /home/pi/rpi_mnt: special device /dev/loop0p2 does not exist.
pi@raspberry47:~ $ cd ~/rpi_mnt
pi@raspberry47:~/rpi_mnt $ sudo mount /dev/loop0p1 -o rw ~/rpi_mnt/boot/
mount: /home/pi/rpi_mnt/boot/: mount point does not exist.
pi@raspberry47:~/rpi_mnt $ sudo mount --bind /dev ~/rpi_mnt/dev/
mount: /home/pi/rpi_mnt/dev/: mount point does not exist.
pi@raspberry47:~/rpi_mnt $ sudo mount --bind /sys ~/rpi_mnt/sys/
mount: /home/pi/rpi_mnt/sys/: mount point does not exist.
pi@raspberry47:~/rpi_mnt $ sudo mount --bind /proc ~/rpi_mnt/proc/
mount: /home/pi/rpi_mnt/proc/: mount point does not exist.
pi@raspberry47:~/rpi_mnt $ sudo mount --bind /dev/pts ~/rpi_mnt/dev/pts
mount: /home/pi/rpi_mnt/dev/pts: mount point does not exist.
pi@raspberry47:~/rpi_mnt $ sudo mkdir -p  /media/netdir/source/raspberrypi/4-09_new_raspi
pi@raspberry47:~/rpi_mnt $ sudo mkdir -p  ~/rpi_mnt/mnt/compile
pi@raspberry47:~/rpi_mnt $ sudo mount  --bind  /media/netdir/source/raspberrypi/4-09_new_raspi ~/rpi_mnt/mnt/compile
pi@raspberry47:~/rpi_mnt $ cd ~/rpi_mnt
pi@raspberry47:~/rpi_mnt $ sudo chroot . bin/bash
chroot: failed to run command ¡®bin/bash¡¯: No such file or directory
pi@raspberry47:~/rpi_mnt $ 
pi@raspberry47:~/rpi_mnt $ 
pi@raspberry47:~/rpi_mnt $ 
pi@raspberry47:~/rpi_mnt $ ifcdf -hT
Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/root      ext4       15G  9.4G  4.2G  70% /
devtmpfs       devtmpfs  1.8G     0  1.8G   0% /dev
tmpfs          tmpfs     2.0G     0  2.0G   0% /dev/shm
tmpfs          tmpfs     2.0G   18M  1.9G   1% /run
tmpfs          tmpfs     5.0M  4.0K  5.0M   1% /run/lock
tmpfs          tmpfs     2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/mmcblk0p3 ext4       15G  8.0G  5.5G  60% /mnt/DISK1
/dev/mmcblk0p1 vfat      253M   53M  200M  21% /boot
tmpfs          tmpfs     391M     0  391M   0% /run/user/1000
pi@raspberry47:~/rpi_mnt $