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# - Unix, Linux Command

# NAME

rand - generate pseudo-random bytes

# SYNOPSIS

openssl rand [-out file] [-rand file(s)] [-base64] 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

Tag | Description
--- | ---
-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.

# SEE ALSO

RAND_bytes(3)

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