Difference between kshell and bash shell scripts Example cited

Shell Programming and Scripting
1

Hi All,

I need some urgent help regarding some info.

I have a cluster of servers for which I have two scripts for management.

control.sh is a bash script meant for restarting/stopping the servers.

manger.ksh is a kshell script. It is a master script to manage restarting/stoppping and deploying activities also on these servers.

Issue: I have to set the value of a variable just before restarting the servers. So when I use manager.ksh after setting the variable it wasnt setting the value of the variable, but when i used control.sh the necessary changes were looking
good.

Can anyone help me in this regard. Propmpt reply would be appreciated!

Thanks

2

This question is like:
I do THIS and get THIS result. But, when I do THAT, I get THAT result. Why?

Seriously, do you think anyone can answer you without knowing what THIS and THAT are?

Please post the 2 scripts or their relevant portions. Also mention the way you invoke these scripts and the exact issue.

3

i am sorry i am bit naive into this forum..

this is inside manger.ksh

function startProcess
{
	for INSTANCE in ${CONTENT}
	do
		PROC_COUNT=`ssh ${SERVER} "ps -ef | egrep -e '-c ${INSTANCE}'| grep -v grep | wc -l"`
		
		if [[ ${PROC_COUNT} -gt 0 ]]; then
			echo "${SERVER}: ${INSTANCE} process is ACTIVE. "
		else
			ssh ${SERVER} "${CONSCRIPTS}/atg_control.sh -e ${ENV} -i ${INSTANCE} -c start" > /dev/null &
			if [[ ${?} -eq 0 ]]; then
				echo "${SERVER}: Startup initiated for ${INSTANCE}. Run checkstatus to check progress."
			else
				echo "ERROR: Problems Encountered with startup of ${INSTANCE} on ${SERVER}"
				exit 1
			fi
			
			if [[ ${WAIT} -gt 0 ]]; then
				echo "Server startup in progress..."
				while [[ ${PROC_COUNT} -gt 0 ]]
				do
					sleep 10
					PROC_COUNT=`ssh ${SERVER} "ps -ef | egrep -e '-c ${INSTANCE}'| grep -v grep | wc -l"`
				done
			fi
			
		fi
	done
}

function stopProcess
{
	for INSTANCE in ${CONTENT}
	do
		PROC_COUNT=`ssh ${SERVER} "ps -ef | egrep -e '-c ${INSTANCE}'| grep -v grep | wc -l"`
		
		if [[ ${PROC_COUNT} -gt 0 ]]; then
			ssh ${SERVER} "${CONSCRIPTS}/atg_control.sh -e ${ENV} -i ${INSTANCE} -c stop" > /dev/null &
			if [[ ${?} -eq 0 ]]; then
				echo "${SERVER}: Shutdown initiated for ${INSTANCE}. Run checkstatus to check progress."
			else
				echo "ERROR: Problems Encountered with shutdown of ${INSTANCE} on ${SERVER}"
				exit 1
			fi
			
			if [[ ${WAIT} -gt 0 ]]; then
				echo "Server shutdown in progress..."
				while [[ ${PROC_COUNT} -gt 0 ]]
				do
					sleep 10
					PROC_COUNT=`ssh ${SERVER} "ps -ef | egrep -e '-c ${INSTANCE}'| grep -v grep | wc -l"`
				done
				echo "Server shutdown complete"
			fi
		else
			echo "${SERVER}: ${INSTANCE} is already down"
		fi
	done
}

function restartProcess
{
for INSTANCE in ${CONTENT}
do

  echo "${SERVER}: Restart initiated for ${INSTANCE}"
  ssh ${SERVER} "${CONSCRIPTS}/atg_control.sh -e ${ENV} -i ${INSTANCE} -c restart" > /dev/null &
  if [[ ${?} -eq 0 ]]; then
     echo "${SERVER}: Restart initiated for ${INSTANCE}. Run checkstatus to check progress."
   else
       echo "ERROR: Problems Encountered with restart of ${INSTANCE} on ${SERVER}"
   fi

done
}

function main
{
for SERVER in ${SERVLIST}
do
  case ${ACTION} in
    stop)   stopProcess ${SERVER} ${CONTENT} ${ENV};;
    start)  startProcess ${SERVER} ${CONTENT} ${ENV};;
    restart)  restartProcess ${SERVER} ${CONTENT} ${ENV};;            
    install)  installJboss ;;
    deploy)   deployjboss ;;
    *)        usage;;
 esac
done
}

=========================================================

and i have attached control.sh:

4

i invoke them by ./control.sh and passing the relevant options....and similarly for manager script also.