How to echo a EOF in bash? [closed]

After search it seems the ascii of EOF is -1,but how can I echo it out?

My purpose of doing this is to test whether it behaves the same as pressing ctrl-d if I just echo out EOF.

Solution 1:

There is no way to echo out an EOF. An EOF can only be generated either by reaching the end of a file or by invoking the keypress bound to the eof terminal setting (CtrlD by default) when the file being read is bound to the terminal.

Solution 2:

In bash you could write exec 1>&- in order to close the file descriptor known as stdout.

As Ignacio already said, EOF is not a character, so the question how to "echo EOF" doesn't make any sense in the first place. You can echo characters (bytes) or you can close a file descriptor, but you can never echo an EOF.