Sponsored Content
Full Discussion: Background processes
Top Forums UNIX for Advanced & Expert Users Background processes Post 7167 by rwb1959 on Wednesday 19th of September 2001 10:16:20 PM
Old 09-19-2001
You could just send some sort of message wrapper
to the FIFO that your program can read.
Effectively setting up an application level
protocol... SYN SYN SOH... sqlplus data ...EOD

Also, you could write the shell script to launch
your C program in the background and grab the
PID of that program (i.e. PROGPID=$!). You
can the send a signal (see kill(1) man page) to
your program to tell it all is OK or not. Your
code would of course have to properly handle the
signals you choose to send (see signal(5) man
page).
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Running two processes in background

hi there, here's what i need in my korn-shell: ... begin korn-shell script ... nohup process_A.ksh ; nohup process_B.ksh & ... "other stuff" ... end lorn-shell script in plain english i want process A and process B to run in the background so that the script can continue doing... (6 Replies)
Discussion started by: jacob_gs
6 Replies

2. Programming

Background processes in a dummy shell...

Hey guys, I am writing a very simple dummy shell in C++ and I am having trouble getting a process to run in the background. First of all, the shell has to recognize when I input a "&" at the end of the command, then it has to stick it in the background of the shell. I understand that if I want... (6 Replies)
Discussion started by: icer
6 Replies

3. Linux

Question about background processes

Hi! First of all, let me warn you I'm quite new to the world of LINUX and Operating Systems understanding, so that's why I pose these newbie and stupid qustions... Anyway, I'm trying to build my own simple shell in C and I'm getting some problems in implementing the background process ('&')... (10 Replies)
Discussion started by: neimaD
10 Replies

4. SuSE

oracle background processes

I have installed oracle 10g on suse sles9. I do not see oracle background processes. ps -ef|grep ora_ gives me environment variables junk. ps -ef|grep smon does not show anything however database is up and running. Any idea how to tweak that? (1 Reply)
Discussion started by: vijayasawant
1 Replies

5. Shell Programming and Scripting

Keep a certain number of background processes running

I've got a bit of code I'm trying to work on... What i want to happen is ... at all times have four parallel mysql dump and imports running. I found the follow code snippet on the forum and modified it to work by starting four concurrent processes but it waits until all four are done before... (7 Replies)
Discussion started by: dgob123
7 Replies

6. UNIX for Dummies Questions & Answers

Disadvantage of background processes

Hi, Inorder to improve the performance, I am trying to execute my command as a background process.. For eg: To zip large numbers of files present in a directory instead of using a single process, i do follow the below method: gunzip -c > / &... (3 Replies)
Discussion started by: unni.raj
3 Replies

7. Solaris

About running processes in background

Hi, I need to establish a procedure that will start an application in background each time my remote Solaris server is (re)started. This would be a kind of daemon. I am no sysadmin expert, so I am looking for pointers. How should I proceed? What are the main steps? Thanks, JVerstry (9 Replies)
Discussion started by: JVerstry
9 Replies

8. Shell Programming and Scripting

Background Processes

Ok guys so I have my first dummy shell almost done except for one tiny part: I do not know how to run a process in the background, from the code! I already know how to do that in a normal shell: $ program & However, no clue when it comes to how to program that thing. :eek: A very... (2 Replies)
Discussion started by: Across
2 Replies

9. Shell Programming and Scripting

Need help on background processes

Hi, I have a schell script parent.ksh from which I am calling three background processes a.ksh,b.ksh and c.ksh. Once these three processes completes the next step in parent.ksh should execute. How to achieve this? Please help me.... Thanks... (1 Reply)
Discussion started by: ravinunna
1 Replies

10. UNIX for Advanced & Expert Users

List all background processes

How do I list the process in a Unix based system which are running in background? The following are options that I'm aware of, but they may not be appropiate. a. using ps -ef , and getting records of processes for which STATUS='S'(uninterruptible sleep) b. using jobs -l, and filtering... (5 Replies)
Discussion started by: kumarjt
5 Replies
KILL(1)                                                            User Commands                                                           KILL(1)

NAME
kill - send a signal to a process SYNOPSIS
kill [options] <pid> [...] DESCRIPTION
The default signal for kill is TERM. Use -l or -L to list available signals. Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0. Alternate signals may be specified in three ways: -9, -SIGKILL or -KILL. Negative PID values may be used to choose whole process groups; see the PGID column in ps command output. A PID of -1 is special; it indicates all processes except the kill process itself and init. OPTIONS
<pid> [...] Send signal to every <pid> listed. -<signal> -s <signal> --signal <signal> Specify the signal to be sent. The signal can be specified by using name or number. The behavior of signals is explained in sig- nal(7) manual page. -l, --list [signal] List signal names. This option has optional argument, which will convert signal number to signal name, or other way round. -L, --table List signal names in a nice table. NOTES Your shell (command line interpreter) may have a built-in kill command. You may need to run the command described here as /bin/kill to solve the conflict. EXAMPLES
kill -9 -1 Kill all processes you can kill. kill -l 11 Translate number 11 into a signal name. kill -L List the available signal choices in a nice table. kill 123 543 2341 3453 Send the default signal, SIGTERM, to all those processes. SEE ALSO
kill(2), killall(1), nice(1), pkill(1), renice(1), signal(7), skill(1) STANDARDS
This command meets appropriate standards. The -L flag is Linux-specific. AUTHOR
Albert Cahalan <albert@users.sf.net> wrote kill in 1999 to replace a bsdutils one that was not standards compliant. The util-linux one might also work correctly. REPORTING BUGS
Please send bug reports to <procps@freelists.org> procps-ng October 2011 KILL(1)
All times are GMT -4. The time now is 03:01 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy