Linux Tips：use screen to manage your session

//Yum
[root@nso ~]# yum -y install screen
//rpm
[root@nso ~]#wget http://mirror-hk.koddos.net/centos/7.8.2003/os/x86_64/
Packages/screen-4.1.0-0.25.20120314git3c2946.el7.x86_64.rpm
[root@nso ~]#rpm -ivh  screen-4.1.0-0.25.20120314git3c2946.el7.x86_64.rpm

[root@xuxing ~]# screen
[root@xuxing ~]# screen -S test  

[root@xuxing ~]# screen -ls
There are screens on:
	15741.test	(Detached)
	5971.pts-2.xuxing	(Detached)
	4485.pts-2.xuxing	(Detached)
	4409.pts-0.xuxing	(Detached)
	25997.9922a	(Detached)
5 Sockets in /var/run/screen/S-root.
[root@xuxing ~]# screen -r test    // recover test session
[detached from 15741.test]

//使用组合键 C-a D  detach session, 即将session 放在后台
[root@xuxing ~]# screen -ls
There are screens on:
	15741.test	(Detached)
	5971.pts-2.xuxing	(Detached)
	4485.pts-2.xuxing	(Detached)
	4409.pts-0.xuxing	(Detached)
	25997.9922a	(Detached)
5 Sockets in /var/run/screen/S-root.

[root@xuxing ~]# kill -9 15741
[root@xuxing ~]# screen -ls
There are screens on:
	15741.test	(Dead ???)
	5971.pts-2.xuxing	(Detached)
	4485.pts-2.xuxing	(Detached)
	4409.pts-0.xuxing	(Detached)
	25997.9922a	(Detached)
Remove dead screens with 'screen -wipe'.
5 Sockets in /var/run/screen/S-root.

[root@xuxing ~]# screen -wipe
There are screens on:
	15741.test	(Removed)
	5971.pts-2.xuxing	(Removed)
	4485.pts-2.xuxing	(Detached)
	4409.pts-0.xuxing	(Detached)
	25997.9922a	(Detached)
2 sockets wiped out.
3 Sockets in /var/run/screen/S-root.

[root@xuxing ~]# screen -ls
There are screens on:
	4485.pts-2.xuxing	(Detached)
	4409.pts-0.xuxing	(Detached)
	25997.9922a	(Detached)
3 Sockets in /var/run/screen/S-root.

[root@xuxing ~]# 

// Way 1: add -L to enable session log
// it will auto generate a log file at user home folder $HOME with name session title name
[root@xuxing ~]# screen -S -L test 
// Way 2: create a normal session ， type Ctrl+a, H to enable session log
// it will be stored at user home folder too
[root@xuxing ~]# screen -S test 
> Ctrl+a, H

// Way 3: customize session log save folder by modify config file
[root@server1 ~]# grep logfile /etc/screenrc 
logfile /var/log/screen/screenlog_%S_%t_%Y_%m_%d_%c.%n.log
[root@xuxing ~]# screen -S -L test