linux-启停jar脚本

#!/bin/bash
 
JAVA_OPTIONS="-Xmx1024m -Xms126m -Duser.timezone=GMT+08"
JARPATH=`pwd`
declare -a JARNAME
 
function findJAR()
{
  JARNAME=($(ls -l $JARPATH | grep jar$ | awk '{print $NF}'))
  if [[ ${#JARNAME[@]} > 1 ]]
  then
    echo "[${JARNAME[@]}] too many jar files!!! I don't know startup which one."
    exit 1
  elif [[ ${#JARNAME[@]} == 0 ]]
  then
    echo "this is no jar file in $JARPATH"
    exit 1
  else
    echo "---------"
  fi
}
 
function rename()
{
  if [[ ${#JARNAME[@]} != 1 ]]
  then
    echo "[${JARNAME[@]}] too many jar files!!! I don't know which one should be renamed."
    exit 1
  else
    timestamp=`date "+%Y%m%d%H%M%S"`
    mv "${JARNAME[0]}" "${JARNAME[0]}${timestamp}"
    echo "${JARNAME[0]} has been renamed to ${JARNAME[0]}${timestamp}"
  fi
}
 
function start()
{
  server_pid=`ps -ef | grep java | grep ${JARNAME[0]} | awk '{print $2}'`
  if [ "${server_pid}" != "" ]
  then
     echo -e "${JARNAME[0]} is alived with pid ${server_pid}.\nabort start action"
     exit 1
  fi
  nohup java ${JAVA_OPTIONS} -jar ${JARNAME[0]} > /dev/null 2>&1 &
  server_pid=`ps -ef | grep java | grep ${JARNAME[0]} | awk '{print $2}'`
  echo "${JARNAME[0]} is alived with pid ${server_pid}."
}
 
function status()
{
  server_pid=`ps -ef | grep java | grep ${JARNAME[0]} | awk '{print $2}'`
  if [ "${server_pid}" != "" ]
  then
     echo -e "${JARNAME[0]} is alived with pid ${server_pid}."
  else
     echo "${JARNAME[0]} isn't alived."
  fi
}
 
function stop()
{
  server_pid=`ps -ef | grep java | grep ${JARNAME[0]} | awk '{print $2}'`
  if [ "$server_pid" != "" ]
  then
     echo "${JARNAME[0]} is alived with pid ${server_pid}."
     kill -9 $server_pid
     echo "has stopped ${JARNAME[0]}"
  else
     echo "${JARNAME[0]} isn't alived."
  fi
}
 
function usage(){
   echo -e "Usage:sh deploy.sh COMMAND \nCOMMAND OPTIONS:\nstart:start the server\nstop:stop the server\nrestart:restart the server\nstatus:show the server pid.\nrename:rename the jar with timestamp.\n"
}
 
findJAR
 
case "$1" in
   "start")
     start
   ;;
   "stop")
     stop
   ;;
   "restart")
     stop
     start
   ;;
   "status")
     status
   ;;
   "rename")
     rename
   ;;
   *)
     usage
   ;;
  esac