Unable to verify the State of Null in a Shell Script

Hello

When I use to check the Null Condition to check for a running Java process his failure to check.

I use the variable in a shell script

DPID = $(ps-ef | grep-i java | grep-v grep)
If ["$DPID '='" ']; then

on the other

FI

If the DPID is null, then executed obtaining but if the DPID value her not to enter the other part of the loop

Thanks and greetings

You could try - c do grep returns a number of matches, and then check if this counter is zero or not.

DPID=`ps -ef |grep - i java|grep -vc grep`

if [[ $DBID -ne 0 ]]; then 

else

fi

Tags: Database

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Unable to verify the State of Null in a Shell Script

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