Check if process is running or not ?

checkprocess.sh

function checkprocess() {
   local process=$1
   [[ $# -ne 1 ]] && { echo "Usage: $0 process"; exit 1; }

   if ps cax | grep -q $process; then
      echo "Process is running."
   else
      echo "Process is not running."
   fi
}
 
checkprocess $1