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pkill -f xxxx.jar -e

#添加空间，1024块1M的空间
dd if=/dev/zero of=/home/swapfile bs=1M count=1024
#设置交换分区文件
mkswap /home/swapfile
#启用交换分区文件
swapon /home/swapfile
使系统开机时自启用，在文件/etc/fstab中添加一行
/home/swapfile swap swap defaults 0 0

<Service name="app">
   <Connector port="9090" protocol="HTTP/1.1" URIEncoding="UTF-8"
           connectionTimeout="20000"  redirectPort="8443" />
   <Engine name="app" defaultHost="localhost">
        <Host name="localhost"  appBase="app"
        unpackWARs="true" autoDeploy="true">
            <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs/app"
               prefix="app_log." suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" /> 
         </Host>
   </Engine>
</Service>
<!--
此处的`app`是与`webapp`同级的，需要注意权限问题。
chmod -R tomcat7:tomcat7 app/
-->

#!/bin/bash
#
# /etc/init.d/tomcat
#
# This is the init script for starting up the
# Jakarta Tomcat server
#
# chkconfig:345 91 10
# description: Starts and stops the Tomcat daemon.
#

tomcat=/usr/application/apache-tomcat
startup=$tomcat/bin/startup.sh
shutdown=$tomcat/bin/shutdown.sh

start() {
  echo -n $"Starting Tomcat service: "
  sh $startup
  echo $?
}

stop() {
  echo -n $"Stopping Tomcat service: "
  sh $shutdown
  echo $?
}

restart() {
  stop
  start
}

status() {
  ps -aef | grep apache-tomcat | grep -v tomcat8 | grep -v grep
}

# Handle the different input options
case "$1" in
start)
  start
  ;;
stop)
  stop
  ;;
status)
  status
  ;;
restart)
  restart
  ;;
*)
  echo $"Usage: $0 {start|stop|restart|status}"
  exit 1
esac

exit 0

ssserver -p 443 -k whatisit! -m aes-256-cfb --user nobody -d start

#
# Wide-open CORS config for nginx
#
location / {
     if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' '*';
        #
        # Om nom nom cookies
        #
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        #
        # Custom headers and headers various browsers *should* be OK with but aren't
        #
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
        #
        # Tell client that this pre-flight info is valid for 20 days
        #
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Type' 'text/plain charset=UTF-8';
        add_header 'Content-Length' 0;
        return 204;
     }
     if ($request_method = 'POST') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
     }
     if ($request_method = 'GET') {
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
     }
}


--------------------------------
上面的解决方案只会对 200,204,301,302生效，也就是说对4XX和5XX的status code并不会生效，需要使用 headers_more模块 
https://www.nginx.com/resources/wiki/modules/headers_more/

Linux命令或者配置