docs: Added UNIX V10 Manuals

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+.TH RANDOM 1
+.CT 1 files games
+.SH NAME
+random, fortune \- sample lines from a file, return cookies
+.SH SYNOPSIS
+.B random
+[
+.B -e
+]
+[
+.I n
+]
+.PP
+.B /usr/games/fortune
+[
+.I file
+]
+.SH DESCRIPTION
+.I Random
+reads the standard input and copies each line to the
+standard output with probability
+.RI 1/ n.
+The default value of
+.I n
+is 2.
+.PP
+Option
+.B -e
+writes no output and returns a random exit code in the
+range
+.RI [0, n \-1].
+.PP
+.I Fortune
+prints a one-line aphorism chosen at random.
+If a
+.I file
+is specified, the saying is taken from that file;
+otherwise it is selected from
+.FR /usr/games/lib/fortunes .
+.SH FILES
+.F /usr/games/lib/fortunes
+.br
+.F /usr/games/lib/fortunes.index
+fast lookup table, maintained automatically
+.SH BUGS
+Successive results of option
+.B -e
+are highly correlated if
+.I random
+is called more than once per second.