Any process guarded from SIGHUP signal as nohup process and detached from controlling terminal will have a ppid of 1, but they are not daemonized.
How about this - to check for the masking permissions ? I know its not a standard practice that needs to be followed before daemonizing a process but its more of a practice.
Hi,
I have to write a daemon process, which performs certain operations in the background.
Now since it performs operations in the background, it should not display anything to the standard output.
The problem is that it still displays, text on standard output.
Can anyone tell me (it is... (2 Replies)
My daemon process is the child of init and init has the responsibility to remove it, once it turns zombie. But I want to ask why the daemon process which is child of init turns zombie in the first place. What measures I have to take to avoid this?
rish (1 Reply)
Hello,
I need to run a command on remote Linux using the ssh command from my local machine. I am able to execute the command on remote machine using ssh but it's behaving strangely.
The command is supposed to start a daemon process on remote linux box and the control should return back to me... (5 Replies)
Hello,
I am new to this forum and this is my first post here...
I have never worked on either Pro*C or Multithreading..Now, i have to write a Pro*C, Multithreading daemon process.. I dont know where to start.. Can anybody help me with examples?
1. need to write a Pro*C multithreading... (0 Replies)
Hi,
HI ,
I have a simple script that moves files from one folder to another folder, I have already done the open-ssh server settings and the script is working fine and is able to transfer the files from one folder to another but right now I myself execute this script by using my creditianls to... (3 Replies)
Hi,
When process listing, I came across a process running as user daemon.
daemon 23576 23574 0 07:32:04 ? 0:07 oracle (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
root 27526 27444 1 07:38:43 ttyp5 0:00 grep 23574
why a process runs as user daemon, when it should be... (3 Replies)
I wish to make a process run in the background, but only one instance of it, and not many,
so when the program is loaded, it has to check whether another instance of the same
program is running and if so to exit. How do I do this ? (4 Replies)
Discussion started by: sundaresh
4 Replies
LEARN ABOUT HPUX
tcgetpgrp
tcgetpgrp(3C)tcgetpgrp(3C)NAME
tcgetpgrp() - get foreground process group id
SYNOPSIS DESCRIPTION
returns the value of the process group ID of the foreground process group associated with the terminal referenced by fildes. is allowed
from a process that is a member of a background process group (see termio(7)); however, the information can be subsequently changed by a
process that is a member of a foreground process group.
RETURN VALUE
Upon successful completion, returns the value of the process group ID of the foreground process group associated with the terminal refer-
enced by fildes. Otherwise, returns a value of -1 and sets to indicate the error.
ERRORS
fails if any of the following conditions are encountered:
The file associated with
fildes is the controlling terminal of the calling process, however, there is no foreground process group defined for
the controlling terminal.
fildes is not a valid file descriptor.
The file associated with
fildes is not the controlling terminal or the calling process does not have a controlling terminal.
WARNINGS
The error which is returned if the controlling terminal has no foreground process group, might not be returned in future releases, depend-
ing on the course taken by the POSIX standard. Portable applications therefore should not rely on this error condition.
SEE ALSO setpgid(2), setsid(2), tcsetpgrp(3C), thread_safety(5), termio(7).
STANDARDS CONFORMANCE tcgetpgrp(3C)