Added man pages.

man/man2/getpid.2

@@ -0,0 +1,33 @@
+.\" Copyright (c) 1980 Regents of the University of California.
+.\" All rights reserved.  The Berkeley software License Agreement
+.\" specifies the terms and conditions for redistribution.
+.\"
+.\"	@(#)getpid.2	6.3 (Berkeley) 5/13/86
+.\"
+.TH GETPID 2 "May 13, 1986"
+.UC 4
+.SH NAME
+getpid, getppid \- get process identification
+.SH SYNOPSIS
+.ft B
+.nf
+#include <sys/types.h>
+#include <unistd.h>
+
+pid_t getpid(void)
+pid_t getppid(void)
+.fi
+.ft R
+.SH DESCRIPTION
+.B Getpid
+returns
+the process ID of
+the current process.
+Most often it is used
+to generate uniquely-named temporary files.
+.PP
+.B Getppid
+returns the process ID of the parent
+of the current process. 
+.SH "SEE ALSO
+.BR fork (2).