title: how to capture command error message in variable for if block
body: <p>Hi below is my code for bash shell script, in this I want to capture error message for if clause, when it says either job is already running or unable to start the job to a variable, how it is possible in below script, or any other way for the below functionality</p>
  
  <pre>
  if initctl start $i  ; then
      echo "service $i  started by script"
  else
      echo "not able to start service $i"
  fi
  </pre>