How do I pass ESC to stdin?

Question

How do I pipe Escto stdin in the shell, Escon the keyboard?

I found that 0x1B

or ^[

is the output result Esc, but how can I enter Esc?

+3

codingtwinky 08 jul. 15 at 22:29

1 answer

Thomas dickey · Accepted Answer · 2015-07-08T22:47:26+0000

On most keyboards it can be entered as control [.

In a shell script, you can do this (this is part of the POSIX shell):

printf '\033'

and in GNU echo

you can do

echo -e '\e'

Piping to the script makes the script's standard input ("stdin"):

printf '\033' | myscript