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Linux 2.6 - man page for rand (linux section 1SSL)

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RAND(1SSL)				     OpenSSL				       RAND(1SSL)

NAME
       rand - generate pseudo-random bytes

SYNOPSIS
       openssl rand [-out file] [-rand file(s)] [-base64] [-hex] num

DESCRIPTION
       The rand command outputs num pseudo-random bytes after seeding the random number generator
       once.  As in other openssl command line tools, PRNG seeding uses the file $HOME/.rnd or
       .rnd in addition to the files given in the -rand option.  A new $HOME/.rnd or .rnd file
       will be written back if enough seeding was obtained from these sources.

OPTIONS
       -out file
	   Write to file instead of standard output.

       -rand file(s)
	   Use specified file or files or EGD socket (see RAND_egd(3)) for seeding the random
	   number generator.  Multiple files can be specified separated by a OS-dependent
	   character.  The separator is ; for MS-Windows, , for OpenVMS, and : for all others.

       -base64
	   Perform base64 encoding on the output.

       -hex
	   Show the output as a hex string.

SEE ALSO
       RAND_bytes(3)

1.0.0e					    2009-02-02				       RAND(1SSL)
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