root@Bellinha:/etc/init.d# ls -la /sys/class/mem/null/uevent
--w------- 1 root root 4096 2007-03-18 15:40 /sys/class/mem/null/uevent
root@Bellinha:/etc/init.d# cat /sys/class/mem/null/uevent
cat: /sys/class/mem/null/uevent: Permissão negada