v7 man page for getpid

GETPID(2)							System Calls Manual							 GETPID(2)

NAME
       getpid  -  get process identification

SYNOPSIS
       getpid( )

DESCRIPTION
       Getpid returns the process ID of the current process.  Most often it is used to generate uniquely-named temporary files.

SEE ALSO
       mktemp(3)

ASSEMBLER
       (getpid = 20.)
       sys getpid
       (pid in r0)

																	 GETPID(2)