echo “#!” fails — “event not found”

Question

The following fails and I don\'t understand why:

$ echo \"#!\"

the following also fails with the same error message:

$ echo         


        

Answer 1

In my case all commands are working. Maybe you can specify your environment.

$ echo "\#\!"
\#\!
$ echo "#!"
echo "#"
#
$ echo "#!"
echo "#"
#
$ echo $BASH_VERSION
3.2.48(1)-release