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Doubt about if conditions

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# 1  
Old 08-19-2013
Doubt about if conditions
Hi folks,

Please confirm below code is fine or not. I mean to say confirm if conditions are fine or not, because i need to test it on live server but before this i need confirmation. Below script first check the status of database and tell us database is up and then stop the database but after that it again check database is down or still up.

Code:
echo "Checking DB Status"

DBSTATUS=`ps -ef |grep ora_pmon_DB1 |grep -v grep |awk -F " "  '{print $8}'`

if [ "$DBSTATUS" = "ora_pmon_DB1" ]
then
echo "$DBSTATUS is up"

#commands stop databse

DBSTATUSF=`ps -ef |grep ora_pmon_DB1 | grep -v grep |awk -F " "  '{print $8}'`
if [ "$DBSTATUSF" = "ora_pmon_DB1" ]
then
echo "$DBSTATUSF is Down - FAILED"
else
echo "$DBSTATUSF is up - SUCCESSFUL"
fi
else
echo "$DBSTATUSF Down - FAILED"
fi

# 2  
Old 08-19-2013
Quote:
Originally Posted by learnbash
Hi folks,

Please confirm below code is fine or not. I mean to say confirm if conditions are fine or not, because i need to test it on live server but before this i need confirmation. Below script first check the status of database and tell us database is up and then stop the database but after that it again check database is down or still up.

Code:
echo "Checking DB Status"

DBSTATUS=`ps -ef |grep ora_pmon_DB1 |grep -v grep |awk -F " "  '{print $8}'`

if [ "$DBSTATUS" = "ora_pmon_DB1" ]
then
echo "$DBSTATUS is up"

#commands stop databse

DBSTATUSF=`ps -ef |grep ora_pmon_DB1 | grep -v grep |awk -F " "  '{print $8}'`
if [ "$DBSTATUSF" = "ora_pmon_DB1" ]
then
echo "$DBSTATUSF is Down - FAILED"
else
echo "$DBSTATUSF is up - SUCCESSFUL"
fi
else
echo "$DBSTATUSF Down - FAILED"
fi

It looks ok. One thing:
After initiating the commands to stop the database, be sure to take the time until it has stopped. Sometimes it takes a little before the processes are killed and cleared.

Maybe a sleep instruction will help.

Hope this helped you.

Regards!
# 3  
Old 08-20-2013
I will recommend to write by function, and call the functions "status, start, stop" with case statement. such as:

Code:
USAGE() {
# Put code here
}
status() {
# Put code here
}
start() {
# Put code here
}
stop() {
# Put code here
}
case "$1" in 
'start')
        echo "check status"
        status
        echo "stop"
        stop
        sleep 10
        echo "check status"
        status
        echo "start"
        start
        sleep 10
        echo "status
        status
        ;;

'stop')
        echo "check status"
        status
        echo "stop"
        stop
        sleep 10
        echo "check status"
        status
        ;;
'status')
        echo "status"
        status
        ;;
*)
        echo "$USAGE" 1>&2
        exit 1
        ;;
esac

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