Pastebinit is a command line program that can paste the contents of a file or command output to a pastebin.
a pastebin is a website to share text quickly with people, it is great to share conf, log or text files.
Often on IRC you are not allowed to paste huge amounts of text, it goes against general guidelines and is frankly rude.
Make sure you have admin privellages then using a virtual console or Gnome-terminal type:
sudo apt-get install pastebinit
After authenticating with your user password answer yes and with some luck you will now have pastebinit installed.
Try using pastebinit with cat, | or pastebinit itself.
That in just a few seconds will return a url displaying the file you specified on the page.
cat filename | pastebinit
That does the same thing but using a different method
An example to return a link that lists any MP#'s in your current working directory.
ls -1 *.mp3 | pastebinit
Some IRC clients support the /exec command where you can type the shell command directly into your client to have the URL appear on your screen.
/exec cat filename | pastebinit
Enjoy and spread the love.