If its invoking multiple children then its own PID should be the common PPID of all children...
e.g. here I know I opened all my windows from one, I look for the first and ps grep its PID:
Hello all,
I have gone through the search and looked at posting about idle users and killing processes. Here is my question I would like to kill an idle user ( which I can do) but how can I asure that all of his process is also killed whit out tracing his inital start PID. I have tried this on a... (4 Replies)
Hello,
How many child processes are actually created when running this code ?
#include <signal.h>
#include <stdio.h>
int main () {
int i ;
setpgrp () ;
for (i = 0; i < 10; i++) {
if (fork () == 0) {
if ( i & 1 ) setpgrp () ;
printf ("Child id: %2d, group: %2d\n", getpid(),... (0 Replies)
Hello,
How many child processes are actually created when running this code ?
#include <signal.h>
#include <stdio.h>
int main () {
int i ;
setpgrp () ;
for (i = 0; i < 10; i++) {
if (fork () == 0) {
if ( i & 1 ) setpgrp () ;
printf ("Child id: %2d, group: %2d\n",... (1 Reply)
hi
OS: Sun Solaris
I have a scenario that when someone presses ctrl-c while executing a shell script, it should not just exit. it should kill all the child processes started by the running shell script only.
I am executing many other scripts parallely which in turn fork off more... (2 Replies)
Hi,
I am using ksh to write my shell script. I need to create multiple-level of nested sub shells in my script. Lets say I have at n th subshell. My question is how do I come out from there to main login shell.
If I use 'exit' command then it is exiting from just one subshell and back to... (4 Replies)
Im sure it has something to do with the wait() call, but everything ive tried either leaves me with a zombie or with the exec executing indefinitely.
switch(pid = fork())
{
case -1:perror("fork failed");
exit(1);
case 0:
if(key == "cd")
{
execl("/bin/cd", "cd",... (2 Replies)
Consider this simple command line
bash -c 'echo $$ ; sleep 10000'This will print the newly created bash PID and sleep for a long time.
If I go to another terminal and do something like
ps -flax | grep leepI'll see something like
501 92418 91910 0 0:00.00 ttys000 0:00.00 bash -c echo $$... (5 Replies)
Hi everyone
i am very new to linux , working on bash shell.
I am trying to solve the given problem
1. Create a process and then create children using fork
2. Check the Status of the application for successful running.
3. Kill all the process(threads) except parent and first child... (2 Replies)
I am trying to kill PIDs that are tied to a KSH "load_sqlplus" and I am using the below code
LIST_PID=`ps -ef | grep -i "load_sqlplus" | grep -v grep | awk '{print $2}'`
if ; then
echo "Processes killed" "PID : " $LIST_PID
kill -9 $LIST_PID
else
echo "Nothing to Kill"
fi... (4 Replies)
Hi guys i have a problem with a script... this script creates differents GUI with YAD... well i want that when i press the "Cancel" button on this graphical interface all the child process and even the same script should be killed
#!/bin/bash
function gui_start {
local choice=""
... (4 Replies)
Discussion started by: maaaaarco
4 Replies
LEARN ABOUT BSD
fork
FORK(2) System Calls Manual FORK(2)NAME
fork - create a new process
SYNOPSIS
pid = fork()
int pid;
DESCRIPTION
Fork causes creation of a new process. The new process (child process) is an exact copy of the calling process except for the following:
The child process has a unique process ID.
The child process has a different parent process ID (i.e., the process ID of the parent process).
The child process has its own copy of the parent's descriptors. These descriptors reference the same underlying objects, so that, for
instance, file pointers in file objects are shared between the child and the parent, so that an lseek(2) on a descriptor in the child
process can affect a subsequent read or write by the parent. This descriptor copying is also used by the shell to establish standard
input and output for newly created processes as well as to set up pipes.
The child processes resource utilizations are set to 0; see setrlimit(2).
RETURN VALUE
Upon successful completion, fork returns a value of 0 to the child process and returns the process ID of the child process to the parent
process. Otherwise, a value of -1 is returned to the parent process, no child process is created, and the global variable errno is set to
indicate the error.
ERRORS
Fork will fail and no child process will be created if one or more of the following are true:
[EAGAIN] The system-imposed limit on the total number of processes under execution would be exceeded. This limit is configuration-
dependent.
[EAGAIN] The system-imposed limit MAXUPRC (<sys/param.h>) on the total number of processes under execution by a single user would be
exceeded.
[ENOMEM] There is insufficient swap space for the new process.
SEE ALSO execve(2), wait(2)3rd Berkeley Distribution May 22, 1986 FORK(2)