Posts Tagged ‘binary file’

Resolving messed up console / terminal on GNU Linux / A tiny old school hack ;)

Thursday, September 26th, 2013

Reading Time: 2minutes

Resolve fix messed up unreadable gnu linux console terminal screenshot

Its probably not so common problem among new-comer Linux users / admins but sooner or later even those who haven't will cat by mistake (or on purpose) some binary file end result will be physical console / terminal / SSH Client (lets say PuTTY) will display some non-sense characters and whether typing you will type in some "alien language" characters this continues until you close up console and re-login. Of course its not such a big problem to re-login or (kill active SSH session).

fix terminal after showing displaying binary file by mistake catting wrong file incident

But there is no sense to do that and loose time and most importantly loose your logged in session (especially if you have hopped to 4 ssh sessions and you forgot to run GNU / screen). Thus its handy to know about
 

# reset

command. Once issued in most cases TTY messed up characters gets fixed up. However if even reset doesn't fix it, there is another "hack" to resolve it with no need for relogin. This is an old hack from my old Linux days and not so popular among admins, here is how:

Type

cat

press Enter

and then press

Ctrl + O (Ctrl ^ O)

 

then press Enter

and then again press

Ctrl + D (Ctrl ^ D)

Nice hack isn't it ? 🙂