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File Supybot.init of Package Supybot

#!/bin/sh
#
#     Copyright (C) 1995--2005  Kurt Garloff, SUSE / Novell Inc.
#          
#     This library is free software; you can redistribute it and/or modify it
#     under the terms of the GNU Lesser General Public License as published by
#     the Free Software Foundation; either version 2.1 of the License, or (at
#     your option) any later version.
#			      
#     This library is distributed in the hope that it will be useful, but
#     WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#     Lesser General Public License for more details.
#      
#     You should have received a copy of the GNU Lesser General Public
#     License along with this library; if not, write to the Free Software
#     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307,
#     USA.
#
# /etc/init.d/supybot
#   and its symbolic link
# /usr/sbin/rcsupybot
#
# LSB compatible service control script; see http://www.linuxbase.org/spec/
# 
# Note: This template uses functions rc_XXX defined in /etc/rc.status on
# UnitedLinux/SUSE/Novell based Linux distributions. If you want to base your
# script on this template and ensure that it works on non UL based LSB 
# compliant Linux distributions, you either have to provide the rc.status
# functions from UL or change the script to work without them.
# See skeleton.compat for a template that works with other distros as well.
#
### BEGIN INIT INFO
# Provides:          supybot
# Required-Start:    $syslog $remote_fs
# Should-Start:      $time 
# Required-Stop:     $syslog $remote_fs
# Should-Stop:       $time 
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: Supybot daemon
# Description:       Supybot is a neat little IRC bot written 
#   in Python. You can start and stop the bot with this 
#   init script automatically.
#   Remember that you have to configure the bot bevore.
### END INIT INFO
# 
# Any extensions to the keywords given above should be preceeded by 
# X-VendorTag- (X-UnitedLinux- X-SuSE- for us) according to LSB.
# 
# Notes on Required-Start/Should-Start:
# * There are two different issues that are solved by Required-Start
#    and Should-Start
# (a) Hard dependencies: This is used by the runlevel editor to determine
#     which services absolutely need to be started to make the start of
#     this service make sense. Example: nfsserver should have
#     Required-Start: $portmap
#     Also, required services are started before the dependent ones.
#     The runlevel editor will warn about such missing hard dependencies
#     and suggest enabling. During system startup, you may expect an error,
#     if the dependency is not fulfilled.
# (b) Specifying the init script ordering, not real (hard) dependencies.
#     This is needed by insserv to determine which service should be
#     started first (and at a later stage what services can be started
#     in parallel). The tag Should-Start: is used for this.
#     It tells, that if a service is available, it should be started
#     before. If not, never mind.
# * When specifying hard dependencies or ordering requirements, you can 
#   use names of services (contents of their Provides: section)
#   or pseudo names starting with a $. The following ones are available
#   according to LSB (1.1):
#	$local_fs		all local file systems are mounted
#				(most services should need this!)
#	$remote_fs		all remote file systems are mounted
#				(note that /usr may be remote, so
#				 many services should Require this!)
#	$syslog			system logging facility up
#	$network		low level networking (eth card, ...)
#	$named			hostname resolution available
#	$netdaemons		all network daemons are running
#   The $netdaemons pseudo service has been removed in LSB 1.2.
#   For now, we still offer it for backward compatibility.
#   These are new (LSB 1.2):
#	$time			the system time has been set correctly	
#	$portmap		SunRPC portmapping service available
#   UnitedLinux extensions:
#	$ALL			indicates that a script should be inserted
#				at the end
# * The services specified in the stop tags 
#   (Required-Stop/Should-Stop)
#   specify which services need to be still running when this service
#   is shut down. Often the entries there are just copies or a subset 
#   from the respective start tag.
# * Should-Start/Stop are now part of LSB as of 2.0,
#   formerly SUSE/Unitedlinux used X-UnitedLinux-Should-Start/-Stop.
#   insserv does support both variants.
# * X-UnitedLinux-Default-Enabled: yes/no is used at installation time
#   (%fillup_and_insserv macro in %post of many RPMs) to specify whether
#   a startup script should default to be enabled after installation.
#   It's not used by insserv.
#
# Note on runlevels:
# 0 - halt/poweroff 			6 - reboot
# 1 - single user			2 - multiuser without network exported
# 3 - multiuser w/ network (text mode)  5 - multiuser w/ network and X11 (xdm)
# 
# Note on script names:
# http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/scrptnames.html
# A registry has been set up to manage the init script namespace.
# http://www.lanana.org/
# Please use the names already registered or register one or use a
# vendor prefix.

# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
SUPYBOT_BIN=/usr/bin/supybot
test -x $SUPYBOT_BIN || { echo "$SUPYBOT_BIN not installed"; 
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

# Check for existence of needed config file and read it
SUPYBOT_CONFIG=/etc/sysconfig/supybot
test -r $SUPYBOT_CONFIG || { echo "$SUPYBOT_CONFIG not existing";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 6; fi; }

# Read config	
. $SUPYBOT_CONFIG

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
. /etc/rc.status

# Reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0	  - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.

if [ "$SUPYBOT_USER" = "" ]; then
    echo "SUPYBOT_USER is not set. Please fix in $SUPYBOT_CONFIG"
    if [ "$1" = "stop" ]; then 
        exit 0;
    else 
        exit 6;
    fi;     
fi

if [ "$SUPYBOT_CONF" = "" ]; then
    echo "SUPYBOT_CONF is not set. Please fix in $SUPYBOT_CONFIG"
    if [ "$1" = "stop" ]; then
        exit 0;
    else
        exit 6;
    fi;
fi

case "$1" in
    start)
            echo -n "Starting Supybot "
            ## Start daemon with startproc(8). If this fails
            ## the return value is set appropriately by startproc.
            /sbin/startproc -u $SUPYBOT_USER $SUPYBOT_BIN $SUPYBOT_OPTIONS $SUPYBOT_CONF

# Remember status and be verbose
            rc_status -v
	;;
    stop)
            echo -n "Shutting down SUPYBOT "
            ## Stop daemon with killproc(8) and if this fails
            ## killproc sets the return value according to LSB.

/sbin/killproc -TERM $SUPYBOT_BIN

# Remember status and be verbose
            rc_status -v
	;;
    try-restart|condrestart)
            ## Do a restart only if the service was active before.
            ## Note: try-restart is now part of LSB (as of 1.9).
            ## RH has a similar command named condrestart.
            if test "$1" = "condrestart"; then
                echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
            fi
            $0 status
            if test $? = 0; then
                $0 restart
            else
                rc_reset	# Not running is not a failure.
            fi
            # Remember status and be quiet
            rc_status
	;;
    restart)
            ## Stop the service and regardless of whether it was
            ## running or not, start it again.
            $0 stop
            $0 start

# Remember status and be quiet
            rc_status
	;;
    force-reload)
            echo -n "Reload service SUPYBOT "
            $0 try-restart
            rc_status
	;;
    reload)
            ## Like force-reload, but if daemon does not support
            ## signaling, do nothing (!)

# If it supports signaling:
            echo -n "Reload service SUPYBOT is not supported"
            
            ## It does not support reload:
            rc_failed 3
            rc_status -v
	;;
    status)
            echo -n "Checking for service SUPYBOT "
            ## Check status with checkproc(8), if process is running
            ## checkproc will return with exit status 0.

# Return value is slightly different for the status command:
            # 0 - service up and running
            # 1 - service dead, but /var/run/  pid  file exists
            # 2 - service dead, but /var/lock/ lock file exists
            # 3 - service not running (unused)
            # 4 - service status unknown :-(
            # 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)
            
            # NOTE: checkproc returns LSB compliant status values.
            /sbin/checkproc $SUPYBOT_BIN
            # NOTE: rc_status knows that we called this init script with
            # "status" option and adapts its messages accordingly.
            rc_status -v
	;;
    *)
            echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload}"
            exit 1
	;;
esac
rc_exit

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File Supybot.init of Package Supybot

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