Simulating ENTER pressing in bash script

Question

I created a really simple bash script that runs several commands. one of these commands requires user input at runtime. that is, it asks the user “do you want blah blah blah?", I want to just send an introductory click on this so that the script is fully automated.

I do not need to wait for input or anything at runtime, just send it a keystroke and the input buffer will process the rest.

Answer 1

echo -ne '\n' | <yourfinecommandhere> 

or use an implicit line feed that generates an echo (thanks to Marsin)

 echo | <yourfinecommandhere> 

Now we can just use --sk :

--sk , --skip-keypress Do not wait for keystrokes after each test

those. sudo rkhunter --sk --checkall

Answer 2

You can find the helpful yes command.

See man yes

Answer 3

You can just use yes .

 # yes "" | someCommand 

Answer 4

The following is an example of using expect :

 #!/usr/bin/expect set timeout 360 spawn my_command # Replace with your command. expect "Do you want to continue?" { send "\r" } 

Check out: man expect for more information.

Answer 5

You can use expect (man expect comes with examples).