$ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.15.0-48-generic root=UUID=ab9c3c8a-b6dc-40f9-b9a7-eea4950cf89e ro verbose INIT_VERBOSE=y noplymouth
$ cat /proc/cmdline /boot/vmlinuz- 4.15.0- 48-generic root=UUID= ab9c3c8a- b6dc-40f9- b9a7-eea4950cf8 9e ro verbose INIT_VERBOSE=y noplymouth
BOOT_IMAGE=