Wrote the manual

uname.1

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+.TH PWD 1
+.SH NAME
+uname \- print system name
+.SH SYNOPSYS
+.B uname
+[\fB-amnrsv\fR]
+.SH DESCRIPTION
+.B uname
+prints out the operating system name to standard output. Various options
+correspond to various characteristics that can also be printed.
+.SH OPTIONS
+.TP
+.BR \-a
+Behaves as though \fB-mnrsv\fR were specified.
+.TP
+.BR \-m
+Print the name of the hardware on which the system is running (e.g. x86).
+.TP
+.BR \-n
+Print the name of this node on the network (i.e. the system's hostname).
+.TP
+.BR \-r
+Print the current operating system release.
+.TP
+.BR \-s
+Print the name of the operating system
+.TP
+.BR \-v
+Print the current operating system version.
+.SH EXIT STATUS
+The following exit values are returned:
+.TP
+.BR 0
+The program successfully did its thing.
+.TP
+.BR 1
+Could not get the requested information.
+.TP
+.BR 2
+Could not allocate space to store the requested information.
+.SH AUTHOR
+Written by Kat.
+.SH COPYRIGHT
+Copyright (C) 2020 The FENIX Project
+.PP
+This software is free software. Feel free to modify it and/or pass
+it around.
+.PP
+This \fBuname\fR implementation is a part of the fenutils package.