crw-r----- 1,1 root  9 Apr 19:35 mem crw-rw-rw- 1,3 root  9 Apr 19:35 null crw-r----- 1,4 root  9 Apr 19:35 port crw-rw-rw- 1,5 root  9 Apr 19:35 zero crw-rw-rw- 1,7 root  9 Apr 19:35 full crw-rw-rw- 1,8 root  9 Apr 19:35 random crw-rw-rw- 1,9 root  9 Apr 19:35 urandom