random(1tcl)

random -- return pseudo-random positive integer

Synopsis

random limit | seed [seedval]

Description

Generates a pseudo-random integer number greater than or equal to zero and less than limit. If seed is specified, then the command resets the random number generator to a starting point derived from the seedval. This allows you to reproduce pseudo-random number sequences for testing purposes. If seedval is omitted, then the seed is set to a value based on current system state and the current time, providing a reasonably interesting and ever-changing seed.