Hello,
We someone help me resolve this problem. I have window 2000 professional, windows 98 and Unixware 7.0.1 on the network. I was able to establish connection with all. However, l was unable to ping window 98 from window 2000 professional. I was able to ping the window 2000 from the window... (10 Replies)
I am using linux termios structure to configure serial port and read the port by read function. For some reason, if I read the whole buffer, almost every time the buffer does not contain the correct reply message sequence from a device sending reply to my linux PC. So I use... (5 Replies)
Need help !
how do i compare 2 files and if there is a difference, output a massage in a pop up window?
the script meant to run using crontab. (2 Replies)
Hi everyone!
I have a strange situation. I'm running an NX remote Gnome desktop session. On the remote machine, there is a whole load of unsaved data in a window. A problem that I've been having with this NX session is that I can't load Gnome Applets, including the Window Switcher. So.. when I... (0 Replies)
Hi
I have a new hdd installed ,and sometimes if i start a session or ftp download while downloading sometimes it creates a ./filename.type Input/output errorso in that case i can-not overwrite ,rename ,remove ,or place a file with the same name on that dir.
How to prevent this and is there... (3 Replies)
When invoking unix commands from other third party tools (IBM ETL), we run the rm / mv commands with the folder as argument been passed. Eg
rm -rf {folder}/*
when the parameter {folder} did not pass rightly or becomes blank, the command becomes dangerous to execute rm -rf /*
How to prevent... (9 Replies)
I'm having a brain freeze moment. I've created a ksh script in AIX that ssh's to a remote server, executes some commands, and then logs out. All of this is sent to a file. I then have the script cat the file so i can see the output. Even though the cat command is outside of the remote session part;... (5 Replies)
Hi,
Last 2 weeks I have searched many forums and i haven't found the answer for the question:
How to get all command output to Putty title?
Needed it for other programs to know when some jobs on a server is done and is it done right or wrong. Plink stdout and stdin wasn't working, i used many... (1 Reply)
Is it possible to toggle back and forth between an xterm invoked from one tty, and a shell invoked from a different tty?
I am running Centos 7 with KDE and booting in non-graphic mode. After logging in on the default window (/dev/tty1) , I can then use ALT-F2 to access a new window (/dev/tty2),... (1 Reply)
Discussion started by: rhgscty
1 Replies
LEARN ABOUT NETBSD
daemon
DAEMON(3) BSD Library Functions Manual DAEMON(3)NAME
daemon -- run in the background
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
int
daemon(int nochdir, int noclose);
DESCRIPTION
The daemon() function is for programs wishing to detach themselves from the controlling terminal and run in the background as system daemons.
Unless the argument nochdir is non-zero, daemon() changes the current working directory to the root (/).
Unless the argument noclose is non-zero, daemon() will redirect standard input, standard output and standard error to /dev/null.
RETURN VALUES
On return 0 indicates success with -1 indicating error.
ERRORS
The function daemon() may fail and set errno for any of the errors specified for the library functions fork(2) and setsid(2).
SEE ALSO fork(2), setsid(2)HISTORY
The daemon() function first appeared in 4.4BSD.
CAVEATS
Unless the noclose argument is non-zero, daemon() will close the first three file descriptors and redirect them to /dev/null. Normally,
these correspond to standard input, standard output and standard error. However, if any of those file descriptors refer to something else
they will still be closed, resulting in incorrect behavior of the calling program. This can happen if any of standard input, standard output
or standard error have been closed before the program was run. Programs using daemon() should therefore make sure to either call daemon()
before opening any files or sockets or, alternately, verifying that any file descriptors obtained have a value greater than 2.
BUGS
daemon() uses fork() as part of its tty detachment mechanism. Consequently the process id changes when daemon() is invoked. Processes
employing daemon() can not be reliably waited upon until daemon() has been invoked.
BSD September 3, 1999 BSD