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GETPID(2)		    BSD System Calls Manual		     GETPID(2)

NAME
     getpid, getppid — get parent or calling process identification

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     pid_t
     getpid(void);

     pid_t
     getppid(void);

DESCRIPTION
     getpid() returns the process ID of the calling process.  The ID is guar‐
     anteed to be unique and is useful for constructing temporary file names.

     getppid() returns the process ID of the parent of the calling process.

ERRORS
     The getpid() and getppid() functions are always successful, and no return
     value is reserved to indicate an error.

SEE ALSO
     gethostid(3)

STANDARDS
     getpid() and getppid() conform to ISO/IEC 9945-1:1990 (“POSIX.1”).

HISTORY
     The getpid() function appeared in Version 5 AT&T UNIX.

BSD				 April 3, 2010				   BSD

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