Hello!
I am working on a server where I should have 4 (resident)processes, one of them being "the father" of the others, so I do 3 forks. The problem that I have is that I do an accept (for sockets) in the "father" process and I want to transmit the job to one of the processes "child" with... (3 Replies)
Hello,
I would like to ask you for a little help with program I'm working on. I have problems with signals and synchronizing processes (I'm quite new to this part of programming).
Process "parent" creates new child process "child1" and this process creates new child process "child2". The... (2 Replies)
Hi!
Can someone explain me exactly this technique? Why a process (PARENT) creates a copy of itself with FORK (CHILD)? What's the reason of this behaviour? Sorry, but I cannot understand the logic behind it.
Thanks. (4 Replies)
On my *nix box, I have a telegram program.
When I go like
tel person "la\nla\nla\n"
the person sees
"la\nla\nla\n"
However, when I have a program that forks and execs tel like:
pid = fork();
if (pid < 0) {
perror("fork failed");
exit(EXIT_FAILURE);
}
if (pid == 0) {... (7 Replies)
Hi,
I need to find/implement an application that FTPs (puts) all new files in a certain directory to an external storage unit. This application should check for new files every 10 seconds (leaving the FTP connection open in between the 10 seconds).
The easiest way would be if there are... (2 Replies)
I need to ssh to a remote server and run my script there. This is my script.
$ssh = "ssh username@host";
$cmd = "$ssh 'cd <my dir> && < sudo Run_exe>'";
my $pid = fork;
if ($pid == 0){
exec $cmd;
}
When I run this I get:
pccons_getchar: got r == 0 (1 Reply)
Hello World!
I am writing code in C++ which have to launch another application X using exec().
I would like to set some limits on it using setrlimit etc...
My problem is that i don't know how to forbid using fork() and strlimit by application X.
How can i do it? (3 Replies)
Hello everybody.I want to make clear that i am not going to ask from anybody to build my asignement but i have a big problem. I can't seem to find anywhere ONE good example on C about what i am trying to do:wall:.I think it is simple. All i ask is one example, even a link is fine.
So, i want to... (1 Reply)
Hello... And thanks in advance for any help anyone can offer me on my question! I've been doing a lot of reading to try and find my answer... But I haven't had any luck
What I'm trying to understand is where a child process inherits global environment variables from? I understand the exec()... (2 Replies)
Discussion started by: bodisha
2 Replies
LEARN ABOUT HPUX
getpgid
getpid(2) System Calls Manual getpid(2)NAME
getpid(), getpgid(), getpgrp(), getpgrp2(), getppid() - get process, process group and parent process ID.
SYNOPSIS DESCRIPTION
These functions return process, process group and parent process IDs, as follows:
Process group ID of the specified process.
If pid is zero, the call applies to the calling process. Same result as
Process group ID of the calling process.
Process group ID of the specified process.
If pid is zero, the call applies to the calling process. Same result as
Process ID of the calling process.
Parent process ID of the calling process.
If the parent process is the initialization process (known as the call returns 1.
Security Restrictions
The system call is subject to compartmental restrictions. See compartments(5) for more information about compartmentalization on systems
that support that feature.
Compartmental restrictions can be overridden if the process possesses the privilege (PRIV_COMMALLOWED). Processes owned by the superuser
may not have this privilege. Processes owned by any user may have this privilege, depending on system configuration. See privileges(5)
for more information about privileged access on systems that support fine-grained privileges.
RETURN VALUE
The functions return the following values:
Successful completion.
n is a nonnegative process ID, as described above.
Failure:
and only. is set to indicate the error.
ERRORS
If or fails, is set to one of the following values:
[EPERM] The current process and pid are not in the same session (see setsid(2)).
[ESRCH] No process can be found corresponding to that specified by pid.
AUTHOR
and were developed by HP, AT&T, and the University of California, Berkeley.
SEE ALSO exec(2), fork(2), setpgid(2), setsid(2), signal(5).
STANDARDS CONFORMANCE getpid(2)
10-07-2010
