ubuntu@ubuntu:~$ ls -al /sys/firmware/efi/
total 0
drwxr-xr-x  5 root root    0 Dec  1 00:04 .
drwxr-xr-x  6 root root    0 Nov 30 23:42 ..
-r--r--r--  1 root root 4096 Dec  1 00:04 config_table
drwxr-xr-x  2 root root    0 Nov 30 23:42 efivars
-r--r--r--  1 root root 4096 Dec  1 00:04 fw_platform_size
-r--r--r--  1 root root 4096 Dec  1 00:04 fw_vendor
-r--r--r--  1 root root 4096 Dec  1 00:04 runtime
drwxr-xr-x 11 root root    0 Dec  1 00:04 runtime-map
-r--------  1 root root 4096 Nov 30 23:43 systab
drwxr-xr-x 58 root root    0 Dec  1 00:04 vars