screen.markdown

screen

You can use screen to run command-line programs and keep them running, even when you go away.

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install screen

$ sudo apt-get install screen

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create a new named screen

$ screen -S website

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list screens

$ screen -list

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connect to a screen

$ screen -x website

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detach from a screen

From inside of a screen, press CTRL+A then d.

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create a new window inside screen

CTRL+A c

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go to the next window

CTRL+A n

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go to the previous window

CTRL+A p

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close a window

Just type exit to close a window.

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irc from the command-line

Install irssi:

$ sudo apt-get install irssi

Then create a screen for irc:

$ screen -S irc

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Then in a screen, you can run irssi to use irc from the command line.

• /nick robowizard - set your nickname on the server
• /connect irc.freenode.net - connect to irc.freenode.net
• /join #cyberwizard - join the channel called cyberwizard
• ESC+N or /win N - to jump to the window at number N

Once you're in a channel, type text like usual. CTRL+A d to detach and screen -x irc to resume.

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run a web server

Make a web server.js:

var http = require('http');
var server = http.createServer(function (req, res) {
    res.end("YOU'RE A WIZARD.\n");
});
server.listen(8000);

now run your server with node from inside a screen:

$ node server.js

then detach the screen with CTRL+A d.