Run Khan Academy Exercises with SimpleHTTPServer

run-khan-exercises.sh

#!/bin/bash

NAME=khan-exercises
PID_FILE=khan-exercises.pid
COMMAND="python -m SimpleHTTPServer"

#
# Functions 
#
do_run() {
  echo "Running Simple HttpServer for Khan Exercises"
  cd ./$NAME
  $COMMAND &
  echo $! > ../$PID_FILE
}

do_stop() {
  echo "Stoping Simple HTTPServer"
  cat $PID_FILE | xargs kill -TERM 
  # ps auxw | grep '#{name}' | grep -v grep | awk '{print $2}'
# [ -f ./$PID_FILE ] && rm ./$PID_FILE || do_force_kill
  rm ./$PID_FILE
}

do_kill() {
  echo "Destroying Simple HTTPServer"  
  if [ -f ./$PID_FILE ];
  then
    cat $PID_FILE | xargs kill -9 
    rm ./$PID_FILE
  else
    echo "Procces file does not exists, applying alternative method"
    do_force_kill
  fi  
}

do_force_kill() {
  ps aux | grep $COMMAND | grep -v grep | awk '{print $2}' | xargs kill    
}

case "$1" in 
  run)
    do_run
    ;;
  stop)
    do_stop
    ;;
  kill)
    do_kill
    ;;  
  *)
    echo "Usage: $SCRIPT_NAME {run|stop|kill}"
    exit 3
    ;;
esac

: