Linux笔记 #05# 断开远程连接后保持程序运行
网上搜索了一下，方法很多，选用最流行的 screen
命令参考：http://man.linuxde.net/screen
1. 安装
root@xkfx:~# apt install screen ... root@xkfx:~# screen -list 列出所有会话 There is a screen on: 1883.pts-0.xkfx (03/04/2018 12:06:15 PM) (Attached) 1 Socket in /var/run/screen/S-root.
2. 基本操作
例如说我现在打算断开 ssh ，又希望XXXXXXXX程序继续运行：
root@xkfx:~# screen -ls
There is a screen on:
1883.pts-0.xkfx (03/04/2018 12:06:14 PM) (Detached)
1 Socket in /var/run/screen/S-root.
root@xkfx:~# screen -dmS MyWorker
（创建一个新的视窗，并指定名字）
root@xkfx:~# screen -ls
There are screens on:
2210.MyWorker (03/04/2018 12:38:55 PM) (Detached)
1883.pts-0.xkfx (03/04/2018 12:06:15 PM) (Detached)
2 Sockets in /var/run/screen/S-root.
root@xkfx:~# screen -r 2227.MyWorker
（screen -r 2227 或者 screen -r MyWorker 均可）
（Attached某个视窗，也可以理解为进入某个视窗）
root@xkfx:/# screen -ls
There are screens on:
2227.MyWorker (03/04/2018 12:40:00 PM) (Attached)
1883.pts-0.xkfx (03/04/2018 12:06:15 PM) (Detached)
2 Sockets in /var/run/screen/S-root.
（执行你想进行的任何操作）
root@xkfx:/# cd /opt/antpool/cpuminer-2.5.0/
root@xkfx:/opt/antpool/cpuminer-2.5.0# ./minerd -o stratum+tcp://stratum-ltc.antpool.com:8888 -u xkfx.01
[2018-03-04 12:45:10] 1 miner threads started, using 'scrypt' algorithm.
[2018-03-04 12:45:10] Starting Stratum on stratum+tcp://stratum-ltc.antpool.com:8888
[2018-03-04 12:45:12] thread 0: 4104 hashes, 15.34 khash/s
[detached from 2227.MyWorker]
（退出某个视窗，但保持该视窗工作继续进行。这里的操作是 Ctrl + A + D）
root@xkfx:~# screen -ls
There are screens on:
2227.MyWorker (03/04/2018 12:40:00 PM) (Detached)
1883.pts-0.xkfx (03/04/2018 12:06:15 PM) (Detached)
2 Sockets in /var/run/screen/S-root.
好了，现在可以断开 ssh了。
重新连接ssh，看看程序是不是仍在运行：
root@xkfx:~# screen -ls
There are screens on:
2227.MyWorker (03/04/2018 12:39:59 PM) (Detached)
1883.pts-0.xkfx (03/04/2018 12:06:14 PM) (Detached)
2 Sockets in /var/run/screen/S-root.
root@xkfx:~# screen -r 2227.MyWorker
[2018-03-04 13:26:38] accepted: 28/28 (100.00%), 15.55 khash/s (yay!!!)
[2018-03-04 13:27:38] thread 0: 932832 hashes, 15.55 khash/s
[2018-03-04 13:27:39] thread 0: 9480 hashes, 15.58 khash/s
[2018-03-04 13:27:39] accepted: 29/29 (100.00%), 15.58 khash/s (yay!!!)
[2018-03-04 13:28:14] thread 0: 539904 hashes, 15.55 khash/s
[2018-03-04 13:28:14] accepted: 30/30 (100.00%), 15.55 k1hash/s (yay!!!)
PS. 终结一个 screen ，切入该 screen 结束正在运行的程序， Ctrl + D
3. 应用
解决一下上次的遗留问题：
root@xkfx:~# screen -dmS myChatroomServer
root@xkfx:~# screen -r myChatroomServer
root@xkfx:~# java -jar main.jar
The server is listening on 10000 port ...
[detached from 2586.myChatroomServer]
操作完后断开 ssh 测试：
