Added my implementation of unixtime.

This implementation has very few reasonable code (call atol() and ctime()),
but has some nice standard program stuff (parse options, print help, ...).

unixtime.1

@@ -0,0 +1,25 @@
+.\" unixtime.1
+.TH UNIXTIME 1 "Feb. 2008" "heinzel"
+
+.SH NAME
+unixtime \- converts a unix timestamp into a human readable date
+
+.SH SYNOPSIS
+.B unixtime [-h, --help] [-V, --version] <TIMESTAMP>
+
+.SH DESCRIPTION
+\fBunixtime\fP is similar to the standard c library function \fBctime()\fP
+
+.SH OPTIONS
+An integer <TIMESTAMP>, which is a number of seconds since the Epoch.
+
+.SH "BUGS"
+Since I have no real understanding of C, I am sure, there are.
+
+.SH "AUTHOR"
+heinzel <heinzel@heinzelwelt.de>
+
+.SH "SEE ALSO"
+.BR time (2), 
+.BR ctime (3)
+