The processes that get created from the above code gets stuck...as in the processes get created but then never completes. (or at least we assume it never completes as we have been killing the process after a couple of hours) We use this exact same code except with a different database view and there are no issues with that particular code. It executes and completes just fine. I have tried runnign the same select statement as above at the database level and there is no issue retrieving the data.
It would seem as though there may be something related to the data that may be causing the process to get stuck? Does anyone know what could cause this process to get stuck?
I have a irritating problem with a "if"-statement or what you should call it, in sed. I would love some help here since I am very, very stuck.
I have this statement that I want to do:
if line contains a:
do this
if none of the lines contained a:
do this
The problem with this... (8 Replies)
Good afternoon,
I'm currently working on an IBM 9110-510, with an AIX 6.1 on it.
Currently, I've put an HyperTerminal on the machine vty0. Folowing the procedure given by a support guy(§details), I'm able to get to the AIX banner
... (6 Replies)
Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line.
... (1 Reply)
Hi Experts,
I am executing "svn" checkout command through my java code on a freeBSD machine. SVN checkout gets started , but when I run "top" command on my freebsd machine, I have observed that "svn" processes are stuck in "pipewr" state.
Any pointer for this problem?
Thanks,
akash (0 Replies)
Hi,
While editing a small text file with cat command i pressed ctrl-d to send eof, instead of coming out of cat command it echoed ^D to the screen. Same thing is happening to ctrl-c. After googling i found this is because of trap.
The problem is i m stuck in editing mode and cannot get the... (3 Replies)
Hi everyone,
I'm trying to write a shell script that process a log file. The log format is generally:
(8 digit hex of unix time),(system ID),(state)\n
My shell script gets the file from the web, saves it in a local text directory. I then want to change the hex to decimal, convert from unix time... (7 Replies)
Hi,
I'm developing my first bash script and have made good progress but stuck at this point.
I've run sed on a text file to extract some data and have saved it into a variable e.g.
$blah
the variable contains emails as follows e.g. <a@b.com> <b@c.com>
I'm now trying to edit... (2 Replies)
Hi,
I am running a script sample.sh in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :-
./sample.sh: line... (12 Replies)
Hi,
We have 2 linux RH servers (Server A and Server B), that were configured the same way. Same OS version, same ftp client, etc.
The ftp client that we had installe, was downloaded from rpmbone site and the filename is: ftp-0.17-53.el6.x86_64
The permissions were already set up... (1 Reply)
Team,
I have multiple batchjobs running in VM, if I do ps -ef |grep java or tomcat I am getting multiple process list.
How do I get my exact tomcat process running and that is unique? via shell script? (4 Replies)
Discussion started by: Ghanshyam Ratho
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)