login as: root
root@192.168.100.83's password:
rescue:~# fw_setenv --help
rescue:~# which fw_setenv
/usr/sbin/fw_setenv
rescue:~# mount
rootfs on / type rootfs (rw)
ubi0:rootfs on / type ubifs (ro,noatime)
devtmpfs on /dev type devtmpfs (rw,relatime,size=126012k,nr_inodes=31503,mode=755)
proc on /proc type proc (rw,relatime)
devpts on /dev/pts type devpts (rw,relatime,mode=600,ptmxmode=000)
tmpfs on /tmp type tmpfs (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
udev on /dev type ramfs (rw,relatime)
/dev/pts on /dev/pts type devpts (rw,relatime,mode=600,ptmxmode=000)
rescue:~#