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RNDCONTROL(8) FreeBSD System Manager's Manual RNDCONTROL(8) NAME rndcontrol -- a utility for manipulating the /dev/random device SYNOPSIS rndcontrol [-q] [-s irq_no] [-c irq_no] DESCRIPTION The rndcontrol command is used to set which interrupts are used to help randomise the ``pool of entropy'' maintained by the kernel. The /dev/random and /dev/urandom devices are the user interface to this source of randomness. Any changes take effect immediately. The following command line options are supported: -q Turn off all output except errors. -s n Allow IRQ n to be used as a source of randomness. This option may be repeated for more than one IRQ. -c n Stop IRQ n from being used as a source of randomness. This option may be repeated for more than one IRQ. The default is to have no IRQ's being used. FILES /dev/random secure random device /dev/urandom random device BUGS Sure to be some. SEE ALSO random(4) AUTHORS Theodore Ts'o wrote the core code. Mark Murray ported this code to FreeBSD and wrote the support routines and constructed the man pages. HISTORY The rndcontrol utility first appeared in FreeBSD 2.1.5. FreeBSD 11.1 October 20, 1995 FreeBSD 11.1
NAME | SYNOPSIS | DESCRIPTION | FILES | BUGS | SEE ALSO | AUTHORS | HISTORY
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