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getppid(2freebsd)

December 15, 2015

freebsd-manpages

Manual pages for a GNU/kFreeBSD system

NAME

getpid, getppid - get parent or calling process identification

LIBRARY


.Lb libc

SYNOPSIS


.In unistd.h pid_t getpid void pid_t getppid void

DESCRIPTION

The getpid system call returns the process ID of the calling process. Though the ID is guaranteed to be unique, it should NOT be used for constructing temporary file names, for security reasons; see mkstemp(3) instead.
The getppid system call returns the process ID of the parent of the calling process.

ERRORS

The getpid and getppid system calls are always successful, and no return value is reserved to indicate an error.

STANDARDS

The getpid and getppid system calls are expected to conform to -p1003.1-90.

HISTORY

The getpid function appeared in AT&T v7 .
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