Child Process PID

skannan · #1 (**permalink**) 06-10-2002

Hi,
Can anybody solve this query?
A parent process forks 2 child processes. How does the child process know it's PID without the parent process sending it.
Apart from the "ps-ef" option, what other options are there if any?

S.P.Prasad · #2 (**permalink**) 06-10-2002

As far as command line instruction goes I can only think of 'ps' command along with its various options but programatically each process can call getpid and getppid routines to know its and its parent pid. Moreover the parent process always knows the pids of its child when it spawns a child process.

Perderabo · #3 (**permalink**) 06-10-2002

The child process can call getpid().

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