如何在 Gnu-screen 中打开选项卡窗口并在每个窗口中执行命令

Question

当启动会话命名为这样的任何名称时 screen -S name1

我想在这个屏幕会话中打开标签窗口，就像在 gnome-terminal 中打开标签一样

gnome-terminal --tab -e "some commands"

那么怎么做呢？

Answer 1

1. 屏幕标签

您正在寻找将其添加到您的 .screenrc 文件中：

screen -t tab1
screen -t tab2

Here's a nice basic .screenrc to get you started with a status bar etc. NOTE: This is typically located in your home directory /home/<username>/.screenrc.

screen -t validate #rtorrent
screen -t compile #irssi
screen -t bash3
screen -t bash4
screen -t bash5
altscreen on
term screen-256color
bind ',' prev
bind '.' next
#
#change the hardstatus settings to give an window list at the bottom of the
#screen, with the time and date and with the current window highlighted
hardstatus alwayslastline
#hardstatus string '%{= kG}%-Lw%{= kW}%50> %n%f* %t%{= kG}%+Lw%< %{= kG}%-=%c:%s%{-}'
hardstatus string '%{= kG}[ %{G}%H %{g}][%= %{= kw}%?%-Lw%?%{r}(%{W}%n*%f%t%?(%u)%?%{r})%{w}%?%+Lw%?%?%= %{g}][%{B} %m-%d %{W}%c %{g}]'

screenshot

2. Tabs in screen (with commands run inside)

The example .screenrc below will create 2 tabs and run 3 echo commands in each.

screen -t tab1                                                                                     
select 0                                                                                           
stuff "echo 'tab1 cmd1'; echo 'tab1 cmd2'; echo 'tab1 cmd3'^M"                                     
screen -t tab2                                                                                     
select 1                                                                                           
stuff "echo 'tab2 cmd1'; echo 'tab2 cmd2'; echo 'tab2 cmd3'^M"                                     

altscreen on                                                                                       
term screen-256color                                                                               
bind ',' prev                                                                                      
bind '.' next                                                                                      
#                                                                                                  
#change the hardstatus settings to give an window list at the bottom of the                        
#screen, with the time and date and with the current window highlighted                            
hardstatus alwayslastline                                                                          
#hardstatus string '%{= kG}%-Lw%{= kW}%50> %n%f* %t%{= kG}%+Lw%< %{= kG}%-=%c:%s%{-}'              
hardstatus string '%{= kG}[ %{G}%H %{g}][%= %{= kw}%?%-Lw%?%{r}(%{W}%n*%f%t%?(%u)%?%{r})%{w}%?%+Lw%?%?%= %{g}][%{B} %m-%d %{W}%c %{g}]'

This technique makes use of screen's select and stuff commands to initially select one of the tabs, and then "stuff" a string into it.

screenshot

3. Creating #2 without using a .screenrc file

If you're looking for the scenario where you can:

1. create a screen session
2. load it up with tabs
3. have each tab running their own commands
4. not require a .screenrc file

Then this is the one for you! Be prepared though. This one can get a little tricky with the command lines.

For starters let's create a screen session:

$ screen -AdmS myshell -t tab0 bash

The switches -AdmS do the following:

(See the screen man page for more details)

-A

    Adapt the sizes of all windows to the size of the  current terminal. 
    By default, screen tries to restore its old window sizes when
    attaching to resizable terminals

-d -m

    Start screen in "detached" mode. This creates a new session but
    doesn't attach to it. This is useful for system startup scripts.

-S sessionname

    When creating a new session, this option can be used to specify a
    meaningful name for the session. This name identifies the session for
    "screen -list" and "screen -r" actions. It substitutes the default
    [tty.host] suffix.

Now let's start loading it up with tabs + their commands:

$ screen -S myshell -X screen -t tab1 vim
$ screen -S myshell -X screen -t tab2 ping www.google.com
$ screen -S myshell -X screen -t tab3 bash

These 3 commands will create 3 additional tabs and run vim, ping google, and launch a bash shell. If we list out the screen sessions we'll see the following:

$ screen -ls
There is a screen on:
        26642.myshell   (Detached)
1 Socket in /var/run/screen/S-root.

If we connect to the screen session, myshell, and list the tabs that it contains we'll see the following:

$ screen -r myshell

Hit this key combination: Ctrl+A followed by Shift+"

Num Name                                                                   Flags

  0 tab0                                                                       $
  1 tab1                                                                       $
  2 tab2                                                                       $
  3 tab3                                                                       $

Switching to tab2:

64 bytes from ord08s08-in-f20.1e100.net (74.125.225.116): icmp_seq=443 ttl=55 time=41.4 ms
64 bytes from ord08s08-in-f20.1e100.net (74.125.225.116): icmp_seq=444 ttl=55 time=33.0 ms
64 bytes from ord08s08-in-f20.1e100.net (74.125.225.116): icmp_seq=445 ttl=55 time=30.1 ms

screenshot

上面的命令是完成 OP 所寻找的基本方法。这当然可以使用 Bash 别名甚至 shell 脚本来压缩和细化，这只是为了展示能力和展示方式！

参考

• 屏幕手册页