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Full Discussion: Need to run script at startup.
Top Forums Shell Programming and Scripting Need to run script at startup. Post 302393152 by Andre_Merzky on Monday 8th of February 2010 03:49:47 AM
Old 02-08-2010
Lightbulb
Quote:
Originally Posted by pinga123
being new to the technology kindly correct if i m wrong.
does running the script means putting & at the end of script name.
Running the script: you can simply put the script (path + name + arguments) on a single line. Your local.rc could look like this

Code:
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

/home/pinga/bin/startup_1.sh -parameter value

If you do that, the script will be called during boot (at the end actually), and your system startup will only be completed once your own startup script has finished (rc.local will wait for the script to complete before continuing).

If startup_1.sh takes a long time, then you may want to run it in the background - *that* is when you add the '&', like

Code:
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local

/home/pinga/bin/startup_1.sh -parameter value &

Then the rc.local script will just start the script, and cotinue on w/o waiting for it to finish. But that also means that, once your system is up, you can't rely on that your script has done all its work.

Best, Andre.
 

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LEARN ABOUT X11R4

service

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 or systemd unit in as predictable an environment as possible, removing most environment variables and
       with the current working directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT, or the name of a systemd unit.  The  existence  of  a
       systemd unit of the same name as a script in /etc/init.d will cause the unit to take precedence over the init.d script.	The supported val-
       ues of COMMAND depend on the invoked script. service passes COMMAND  and OPTIONS to the init script unmodified. For systemd  units,  start,
       stop, status, and reload are passed through to their systemctl/initctl equivalents.

       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. The status is [ + ] for running services, [ - ]
       for stopped services and [ ? ] for services without a status command.  This option only calls status for sysvinit jobs.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

       /{lib,run,etc}/systemd/system
	      The directories containing systemd units.

ENVIRONMENT

       LANG,  LANGUAGE,  LC_CTYPE, LC_NUMERIC, LC_TIME, LC_COLLATE, LC_MONETARY, LC_MESSAGES, LC_PAPER, LC_NAME, LC_ADDRESS, LC_TELEPHONE, LC_MEA-
       SUREMENT, LC_IDENTIFICATION, LC_ALL, TERM, PATH
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton
       update-rc.d(8)
       init(8)
       invoke-rc.d(8)
       systemctl(1)

AUTHOR

       Miloslav Trmac <mitr@redhat.com>, Petter Reinholdtsen <pere@hungry.com>

       Licence: GNU Public Licence v2 (GPLv2)

COPYRIGHT

       2006 Red Hat, Inc.,  Petter Reinholdtsen <pere@hungry.com>

Jan 206 																SERVICE(8)
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