How to print #!/bin/bash using echo command [duplicate]

Question

This question already has answers here:

Why can't I echo the characters #! in a string in bash? [duplicate] (5 answers)

Closed 9 years ago.

I have tried the escape character but it doesn't seems works with !. I need this to auto-configure packages using scripts.

Answer 1

! is magic in a default interactive bash session, but not in scripts (set +H to disable in an interactive prompt). In any case:

echo '#!/bin/bash'

Answer 2

Or with no quotes and escaping the # and the !:

echo \#\!/bin/bash

Answer 3

printf should work too:

printf '#!/bin/bash\n'