Is there a command that exists that can simulate keypresses? I want to pipe some data to it to make it type into a GUI program for me.


Yes, it is xdotool.

To simulate a key press, use:

xdotool key <key>

For example, to simulate pressing F2:

xdotool key F2

To simulate pressing crtl + c:

xdotool key ctrl+c

To simulate pressing ctrl + c and then a Backspace:

xdotool key ctrl+c BackSpace

Check man xdotool to get more idea.

You might need to install the xdotool package first to use xdotool command.

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  • Sweet! I'm assuming people use this for remote connections? – SpecialBomb Mar 4 '16 at 21:10
  • @SpecialBomb Depends..i use it sometimes to simulate a key inside a script.. – heemayl Mar 4 '16 at 21:13
  • Well, thanks! I'm going to use it specifically to make my own remote connection thing. – SpecialBomb Mar 4 '16 at 21:15
  • I used it so that my computer wouldn't sleep while I was watching movies. – Liam Mar 5 '16 at 0:11
  • What :key syntax is it to enter UP arrow key? Found it here as xdotool key Up askubuntu.com/q/382005/22308 – Nam G VU Dec 25 '19 at 9:11

Use expect (man expect)

#set timeout 10
set clientName [lindex $argv 0];
set hostName [lindex $argv 1];
set passWord [lindex $argv 2];

spawn ssh "$hostName";
expect "Password:";
send "$passWord\r";
expect "$hostName";

send "cd /apps/bin\r";
expect " bin]";
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  • 2
    expect won't work with GUI programs. – Dmitry Grigoryev Mar 22 '16 at 16:19

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