NAME
getpid, getppid
— get parent or calling process
identification
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 guaranteed 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.
LEGACY SYNOPSIS
#include
<sys/types.h> #include
<unistd.h>
The include file
<sys/types.h> is
necessary.
SEE ALSO
STANDARDS
getpid() and
getppid() conform to IEEE Std
1003.1-1988 (“POSIX.1”).