6
Próbuję utworzyć szablon dla skryptów usług start i stop. Sprawdzałem szablon dla tomcat uruchamiania i zatrzymywania się i zobacz polecenie RETVAL=$?.Co oznacza RETVAL?
Co to oznacza? Czy powinienem to zatrzymać? Przy okazji, mój scenariusz jest poniżej, na wypadek, gdybyście chcieli to zobaczyć.
#!/bin/bash
#===================================================================================
#
#
FILE: <script-file-name>.sh
#
#
USAGE: <script-file-name>.sh [-d] [-l] [-oD logfile] [-h] [starting directories]
#
# DESCRIPTION: List and/or delete all stale links in directory trees.
#
The default starting directory is the current directory.
#
Don’t descend directories on other filesystems.
#
#
OPTIONS: see function ’usage’ below
# REQUIREMENTS: ---
#
BUGS: ---
#
NOTES: ---
#
AUTHOR: Valter Henrique, [email protected]<company>.com
#
COMPANY: <company>
#
VERSION: 1.0
#
CREATED: 03.14.13
#
REVISION: 03.14.13
#===================================================================================
#
# chkconfig: 345 90 12
# description: <service-name> start, stop, restart service
#
# Get function from functions library
. /etc/init.d/functions
folder=/<company>/<service-folder> #folder to the application
service="<service-name>" #name of the service
startup=$folder/start.sh
shutdown=$folder/stop.sh
#=== FUNCTION ================================================================
#
NAME: start
# DESCRIPTION: Start the service <service-name>
# PARAMETER 1: ---
#===============================================================================
start() {
#----------------------------------------------------------------------
# logging the start
#----------------------------------------------------------------------
initlog -c "echo -n Starting $service:"
#----------------------------------------------------------------------
# getting the process PID
#----------------------------------------------------------------------
pid_process=`ps -ef | grep "$folder/<jar>.jar" | grep -v grep |awk -F' ' '{ print $2 }'`;
if [ $pid_process ]; then
echo "<service-name> is running!"
echo "Stop then first!"
else
action $"Starting <service-name> service: " su - <user_deployer> -c $startup
RETVAL=$?
fi
#----------------------------------------------------------------------
# create the lock file
#----------------------------------------------------------------------
touch /var/lock/subsys/$service
success $"Sucess $service startup"
echo
}
#=== FUNCTION ================================================================
#
NAME: stop
# DESCRIPTION: Stop the service <service-name>
# PARAMETER 1: ---
#===============================================================================
stop() {
#----------------------------------------------------------------------
# logging the stop
#----------------------------------------------------------------------
initlog -c "echo -n Stopping $service: "
killproc $service
#----------------------------------------------------------------------
# now, delete the lock file
#----------------------------------------------------------------------
rm -f /var/lock/subsys/$service
echo
}
#----------------------------------------------------------------------
# Main Logic
#----------------------------------------------------------------------
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status $service
;;
restart|reload|condrestart)
stop
start
;;
*)
echo $"Usage: $0 {start|stop|restart|reload|status}"
exit 1
esac
exit 0
Ponieważ nikt nie wspomniał o tym, "RETVAL" jest skrótem od 'RETurn VALUE'. Znajomość etymologii * nix słów kluczowych pomaga mi je zapamiętać. – NobleUplift