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

问题

This question already has answers here:

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

Closed 5 years ago.

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

回答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'

回答2:

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

echo \#\!/bin/bash

回答3:

printf should work too:

printf '#!/bin/bash\n'

来源：https://stackoverflow.com/questions/22797530/how-to-print-bin-bash-using-echo-command