In SUSE Linux Enterprise Server 10 the /dev/random is missing, to create it use the mknod command (mknod – make block or character special files):
mknod /dev/random c 1 9
The /dev/random is a special file that serves as a random number generator or as a pseudorandom number generator. It allows access to environmental noise collected from device drivers and other sources.[citation needed] Not all operating systems implement the same semantics for /dev/random. Linux was the first operating system to implement a true random number generator in this way.