758
tar -vczfx123 ought to do it
(imgs.xkcd.com)
img title="I don't know what's worse--the fact that after 15 years of using tar I still can't keep the flags straight, or that after 15 years of technological advancement I'm still mucking with tar flags that were 15 years old when I started."
user@server:~> tar xvf somearchive.tartar: somearchive.tar: Cannot open: No such file or directorytar: Error is not recoverable: exiting nowScheiße...