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Top Forums UNIX for Advanced & Expert Users program that boots at OS startup Post 28292 by Kelam_Magnus on Monday 16th of September 2002 05:30:35 PM
Old 09-16-2002
Your file locations may vary but should be similar

Sure you can. It would help to know what OS you are running.

You will need to do a few things. All these things are based on an HPUX system. But should be similar to yours

You will need to edit the /etc/inittab file to add it to the bootup.

Create a script and put it in a directory similar to /sbin/init.d, may be diff place on your box.

Create a link to the startup directory similary to /sbin/rc3.d linked to the script in /sbin/init.d. The link name will start with an "S" and a number and the script name. Like S342myscript.

You will also need a Kill script in a lower directory probably in /etc/rc1.d. This script may be called K342myscript.


So you will have 3 files basically.

/sbin/init.d/myscript # actual script here
/etc/rc3.d/S342myscript # link to above script for startup on bootup.
/etc/rc1.d/K342myscript # link to above script for kill script on shutdown.

You can look at the syntax of other scripts in this file to include the "start" and "stop" functionality with your script so you can stop it and restart it when it gets out of whack.

Look at the /sbin/init.d/cron script. This is a fairly short example of a good script to copy. There should also be a template file in there as well.

Here are a few posts that give some help.

https://www.unix.com/showthread.php?s...hlight=inittab
 

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service(8)						      System Manager's Manual							service(8)

NAME
service - run a System V init script SYNOPSIS
service SCRIPT COMMAND [OPTIONS] service --status-all service --help | -h | --version DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working directory set to /. The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start command. service --status-all runs all init scripts, in alphabetical order, with the status command. If the init script file does not exist, the script tries to use legacy actions. If there is no suitable legacy action found and COMMAND is one of actions specified in LSB Core Specification, input is redirected to the systemctl. Otherwise the command fails with return code 2. FILES
/etc/init.d The directory containing System V init scripts. ENVIRONMENT
LANG, TERM The only environment variables passed to the init scripts. SEE ALSO
chkconfig(8), ntsysv(8), systemd(1), systemctl(8), systemd.service(5) Jan 2006 service(8)
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