Sponsored Content
Top Forums Programming Problems with child comunicating with parent on fork() Post 302188906 by Zarnick on Thursday 24th of April 2008 01:38:11 PM
Old 04-24-2008
I meant that if the child write's on the pipe, isn't the father allowed to read from it? (any child).

Anyway, here's the code, sorry for the portuguese comentaries, but it should be easy to follow what's it up to.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

what are parent and child processes all about?

I don't follow what these are... this is what my text says... "When a process is started, a duplicate of that process is created. This new process is called the child and the process that created it is called the parent. The child process then replaces the copy for the code the parent... (1 Reply)
Discussion started by: xyyz
1 Replies

2. Programming

fork() with su (child with other user)

Hi all, i need to execute a program from within my c++ code. This is no problem. system(), fork(), execxy(). But now i want to able to execute the program as another user as the parent process. The whole thing is on solaris. I should be possible for both, users with no shell and no password... (1 Reply)
Discussion started by: heck
1 Replies

3. Programming

fork() and child processes

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)
Discussion started by: green_dot
0 Replies

4. Shell Programming and Scripting

fork() and child processes

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)
Discussion started by: green_dot
1 Replies

5. UNIX for Advanced & Expert Users

Fork() 1 Parent 3 Children

Hi, as I understand fork(), it makes a copy of the parent which becomes a child. But is there anyway to make three children for that one parent. So in other words, if I look up the getppid() of the children, I want them to have the same value?? Thanks in advance to any help! (1 Reply)
Discussion started by: MS_CC
1 Replies

6. UNIX for Advanced & Expert Users

Child Killing Parent

Hi all, I am writing a script which calls other third party scripts that perform numerous actions. I have no control over these scripts. My problem is, one of these scripts seems to execute and do what it is meant to do, but my calling / parent script always exits at that point. I need to... (4 Replies)
Discussion started by: mark007
4 Replies

7. Programming

To share fd between parent and child

i used function fork(). so i made two process. parent process accepted socket fd and writing to shared memory. then now. how can child process share parent's socket fd? is this possible? Thanks in advance (1 Reply)
Discussion started by: andrew.paul
1 Replies

8. Homework & Coursework Questions

Need help with deleting childīs parent and child subprocess

1. The problem statement, all variables and given/known data: I need to make an program that in a loop creates one parent and five children with fork(). The problem i'm trying to solve is how to delete the parent and child of the childīs process. 2. Relevant commands, code, scripts,... (0 Replies)
Discussion started by: WhiteFace
0 Replies

9. Programming

fork(), parent and child processes???

Hi friends, I have a small question regarding unix system call fork, I hope you will solve my problem. Here is the small program $ cat fork1.c #include <stdio.h> #include <unistd.h> #include <sys/types.h> int main() { int pid; int x = 0; x = x + 1; pid = fork(); if(pid < 0) {... (2 Replies)
Discussion started by: gabam
2 Replies

10. Shell Programming and Scripting

forking a child process and kill its parent to show that child process has init() as its parent

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)
Discussion started by: vizz_k
2 Replies
URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

NAME
URI::URL - Uniform Resource Locators SYNOPSIS
$u1 = URI::URL->new($str, $base); $u2 = $u1->abs; DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to be distributed with the libwww-perl library. The following differences compared to the "URI" class interface exist: o The URI::URL module exports the url() function as an alternate constructor interface. o The constructor takes an optional $base argument. The "URI::URL" class is a subclasses of "URI::WithBase". o The URI::URL->newlocal class method is the same as URI::file->new_abs o URI::URL::strict(1) o $url->print_on method o $url->crack method o $url->full_path; same as ($uri->abs_path || "/") o $url->netloc; same as $uri->authority o $url->epath, $url->equery; same as $uri->path, $uri->query o $url->path and $url->query pass unescaped strings. o $url->path_components; same as $uri->path_segments (if you don't consider path segment parameters). o $url->params and $url->eparams methods. o $url->base method. See URI::WithBase. o $url->abs and $url->rel have an optional $base argument. See URI::WithBase. o $url->frag; same as $uri->fragment o $url->keywords; same as $uri->query_keywords; o $url->localpath with friends map to $uri->file o $url->address and $url->encoded822addr; same as $uri->to for mailto URI. o $url->groupart method for news URI. o $url->article; same as $uri->message SEE ALSO
URI, URI::WithBase COPYRIGHT
Copyright 1998-2000 Gisle Aas. perl v5.8.0 2002-05-09 URI::URL(3)
All times are GMT -4. The time now is 10:35 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy