I have an UBUNTU installation USB disk.
The disk name is “UBUNTU 22_0” and will be mounted on “/run/media/UBUNTU 22_0-sda1”.
There is a space on it so the command “df | grep /dev/sda | awk ‘{ print $6 }'” is not work.

root@host:~# df
Filesystem     1K-blocks    Used Available Use% Mounted on
/dev/root        2972456 1629696   1169092  59% /
devtmpfs          733972       4    733968   1% /dev
tmpfs             981396       0    981396   0% /dev/shm
tmpfs             392560    9544    383016   3% /run
tmpfs               4096       0      4096   0% /sys/fs/cgroup
tmpfs             981400      20    981380   1% /tmp
tmpfs             981396     232    981164   1% /var/volatile
tmpfs             196276       0    196276   0% /run/user/0
/dev/mmcblk2p2     65390       0     65390   0% /run/media/fake-mmcblk2p2
/dev/mmcblk1p1 122078208 3231488 118846720   3% /run/media/mmcblk1p1
/dev/mmcblk2p1     65390   37516     27874  58% /run/media/boot-mmcblk2p1
/dev/mmcblk2p4   4129072    1084   3894212   1% /run/media/data-mmcblk2p4
/dev/sda1        3992256 3833984    158272  97% /run/media/UBUNTU 22_0-sda1

root@host:~# df | grep /dev/sda | awk '{ print $6 }'
/run/media/UBUNTU