V8/usr/man/man1/random.1

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.TH RANDOM 1
.SH NAME
random \- sample lines from a file or provide random exit code
.SH SYNOPSIS
.B random
[
.B \-e
] [ n ]
.SH DESCRIPTION
.I Random
reads the standard input and copies each line to the
standard output with probability
.RI 1/ n.
.PP
Option
.B \-e
writes no output and returns a random exit code in the
range
.RI [0, n \-1].
.PP
The default value of 
.I n
is 2.
.PP
To select just one line randomly from a file use
.IR fortune (6).
.SH BUGS
Successive results of option
.B \-e
are highly correlated if
.I random
is called more than once per second.