Sometimes my R & D result in the weird output on the screen. For example, accidentally I run cat command over binary file – cat /sbin/*. You will be not able to access your bash/ksh/zsh based terminal. It will be full of wired character sequences that can lock down your display. These characters will hide what you type or character displayed into strange symbols. To clear gibberish all over the screen use the following method. This article describes how to really clear the terminal screen or reset terminal in Linux or Unix-like system.
The clear command
The clear command clears your screen including its scrollback buffer.
You can press CTRL+L to clear screen too. However, clear command won’t clear the terminal screen. Use the following methods to really clear the terminal so you get a get back a good working terminal.
How to fix the display using the reset command
Here is my console with gibberish all over the screen:
To fix the display just type the reset command. It will initialization terminal again for you:
$ tput reset
If reset command failed to work type the following command to restore the session to a normal state:
$ stty sane
Press CTRL + L to clear the screen (or type the clear command):
Use ANSI escape sequence to really clear the bash terminal
Another option is to type the following ANSI escape sequence:
clear echo -e "\033c"
Sample outputs from both commands:
Read man pages of stty and reset for more information stty(1),reset(1),bash(1)