Question

I am developing a Java program which checks the running processes, if not start that process. In my context I am executing the .sh file which is like this.

#!/bin/sh
echo "Hello World..."
cnt=`ps -eaflc --sort stime | grep clientApplication.jar | grep -v grep | wc -l`
if [ $cnt = 3 ] 
then
        echo "Services for Pigeon are already running..."
else
        echo "Starting Services for Pigeon..."
        echo `java -jar clientApplication.jar`
fi

But it’s not working. What’s the problem?

Answer 1

Using the test expression works. Hope this helps !!

echo "Hello World"
cnt=`ps -eaflc --sort stime | grep clientApplication.jar |grep -v grep | wc -l`
if(test $cnt -eq 3) ;
then
    echo "Services for Pigeon are already running..."
else
    echo "Starting Services for Pigeon..."
    echo `java -jar clientApplication.jar`
fi