howto's

Ever perform a cat command on a binary file at the command
line? Usually, you get a screen full of bizarre characters, and
sometimes you end up with a terminal that.s unusable. Rather
than having to close the terminal and re-open it, just issue a
reset command:

reset

And, all should go back to normal. Sometimes the carriage
return may stop working in your terminal, in which case, you
need to do the following to make reset work:

<LF>reset<LF>

<LF> is the line-feed character, normally Ctrl-J.