How can I echo to /dev/tty?

Question

Is there a way to send something like an "end of data" after executing

echo "test" > /dev/tty1

in order to gain the "input cursor" back to "receiving" terminal (in this case tty1)?

Screenshot: http://picload.org/image/acdwigg/tty.png

Answer 1

Using echo > /dev/tty you can't achieve that. But you can do that by sending a signal to process which are using that tty.

For example:

kill -s SIGINT `ps -ft pts/2 | grep pts/2 | cut -d ' ' -f 5`

Answer 2

$ echo "test" > /dev/tty
test

Cygwin supports the following character devices commonly found on POSIX systems:

/dev/tty    The current controlling tty of a session.

Special filenames

Answer 3

centos will print out your string in the console you select

#run on pts/8
[root@C203-ATC ONT]# uname -a
Linux C203-ATC 2.6.32-504.el6.x86_64 #1 SMP Wed Oct 15 04:27:16 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[root@C203-ATC ONT]# echo "test" > /dev/pts/3
[root@C203-ATC ONT]# 

[root@C203-ATC BASIC]# tty
/dev/pts/3
#checked on pts/3  
[root@C203-ATC BASIC]# test
(cursor)
#cursor pending ...

Answer 4

You cannot do it like that. The '>' redirection operator makes it so that for the WHOLE execution time standard input IS the echo command, and you can't just change it later.

You might want to rethink your needs and implementation.