screen

screen 使用方法

• screen 可用于在 linux 情况下的多重窗口管理
• screen 可后台运行, 解决ssh下bash超时退出的问题

screen 常用使用

使用screen --help 可以查看 screen的全部选项

>  screen --help
Use: screen [-opts] [cmd [args]]
 or: screen -r [host.tty]

Options:
-4            Resolve hostnames only to IPv4 addresses.
-6            Resolve hostnames only to IPv6 addresses.
-a            Force all capabilities into each window's termcap.
-A -[r|R]     Adapt all windows to the new display width & height.
-c file       Read configuration file instead of '.screenrc'.
-d (-r)       Detach the elsewhere running screen (and reattach here).
-dmS name     Start as daemon: Screen session in detached mode.
-D (-r)       Detach and logout remote (and reattach here).
-D -RR        Do whatever is needed to get a screen session.
-e xy         Change command characters.
-f            Flow control on, -fn = off, -fa = auto.
-h lines      Set the size of the scrollback history buffer.
-i            Interrupt output sooner when flow control is on.
-l            Login mode on (update /var/run/utmp), -ln = off.
-ls [match]   or
-list         Do nothing, just list our SockDir [on possible matches].
-L            Turn on output logging.
-Logfile file Set logfile name.
-m            ignore $STY variable, do create a new screen session.
-O            Choose optimal output rather than exact vt100 emulation.
-p window     Preselect the named window if it exists.
-q            Quiet startup. Exits with non-zero return code if unsuccessful.
-Q            Commands will send the response to the stdout of the querying process.
-r [session]  Reattach to a detached screen process.
-R            Reattach if possible, otherwise start a new session.
-s shell      Shell to execute rather than $SHELL.
-S sockname   Name this session <pid>.sockname instead of <pid>.<tty>.<host>.
-t title      Set title. (window's name).
-T term       Use term as $TERM for windows, rather than "screen".
-U            Tell screen to use UTF-8 encoding.
-v            Print "Screen version 4.08.00 (GNU) 05-Feb-20".
-wipe [match] Do nothing, just clean up SockDir [on possible matches].
-x            Attach to a not detached screen. (Multi display mode).
-X            Execute <cmd> as a screen command in the specified session.

参数说明： - -A 　将所有的视窗都调整为目前终端机的大小。 - -d<作业名称> 　将指定的screen作业离线。 - -h<行数> 　指定视窗的缓冲区行数。 - -m 　即使目前已在作业中的screen作业，仍强制建立新的screen作业。 - -r<作业名称> 　恢复离线的screen作业。 - -R 　先试图恢复离线的作业。若找不到离线的作业，即建立新的screen作业。 - -s 　指定建立新视窗时，所要执行的shell。 - -S<作业名称> 　指定screen作业的名称。 - -v 　显示版本信息。 - -x 　恢复之前离线的screen作业。 - -ls或--list 　显示目前所有的screen作业。 - -wipe 　检查目前所有的screen作业，并删除已经无法使用的screen作业。

例子

1、 创建一个 screen 终端

> screen // 创建 screen 终端

2、创建一个终端, 并执行相关命令

> screen tail -f /dev/null

3、离开screen终端是在screen 界面下ctrl+a d(这里的离开不是退出,后台仍然在继续运行, 退出使用quit;)

4、 如何查看screen终端

> screen -ls
There are screens on:
    23665.pts-11.control-master004  (Detached)
    17790.sn    (Detached)
    31578.delete_dai_deleted    (Detached)
3 Sockets in /var/run/screen/S-root.

5、 如何重新进入终端

> screen -r 23665