How can I disable echo in terminal

This might seem simple but sometimes I need terminal to not echo anything , whether for a specific command or all commands.

in windows I could simply do echo off

I tend to make files with cat command a lot but it returns whatever I'm entering and I feel like an Alcoholic because I see double.

example :

cat | sudo tee -a vocab.txt

I am the first line
I am the first line
I am the second line
I am the second line

The answer is to run:

set +x

Turning on echo is

set -x

I just ran into this issue when a script failed and the terminal kept echo'ing all the commands I typed afterwards. This is the first answer than came up when I tried searching for a fix.

More info:

set -x enables a mode of the shell where all executed commands are printed to the terminal. (see: https://stackoverflow.com/questions/36273665/what-does-set-x-do)

You can turn terminal echo off with the command:

stty -echo

(warning: after entering this command, you won't see following commands that you'll type)

and turn it on again with the command:

stty echo

The option to switch echoing of the command in a terminal off - with bash as a shell is:

set +v

# - the -->  set -v <-- sets the command echoing back on