For example, often when I'm logged in I want to reply to a (If you run Linux, you can choose from eight virtual consoles by using the [ALT] key with one of the keys [F1] through [F8] . But that still doesn't have all the nice features of screen .)but I need to test something first. Currently, I have to get out of mail to do it, or start a within mail . But using the screen program, I could just switch back and forth between shells. I could run mail in one shell, test things in another, edit a file in a third, etc.-up to 10 shells in all.
Once you start up screen , a full screen disclaimer appears (which can be disabled by configuring $HOME/.screenrc ). After pressing SPACE or RETURN, you'll be placed in an initial shell with your usual system prompt. This shell is screen number 0.
I can use this shell to read my mail.
Now, suppose I read a mail message asking my opinion about a news posting. Rather than get out of mail to read news before I respond, I can just start a new shell using CTRL-a CTRL-c and start up a news reader there. This new window is screen number 1.
Once I read the article in question, I switch back to the previous shell using CTRL-a CTRL-a and start to respond to the mail message:
> 38 kramer Wed Oct 28 10:31 20/654 Posting on comp.unix.que N 39 tim Wed Oct 28 10:46 39/1485 Re: awf N 40 tim Wed Oct 28 10:47 26/832 Re: announcement of vol8 &
Now, suppose I want to check my facts before I continue writing the message. Rather than quit my message or start a subshell, I can just start up yet another shell window by pressing CTRL-a CTRL-c again. Then I can run the commands I want to test. Once I have my information, I can go back to the previous shell using CTRL-a CTRL-a again, or using CTRL-a 0 to explicitly call up screen number 0.
One of the really neat things about screen is that it even lets you "detach" a screen, so that you can log out, then go home and.