What is the preferred Bash shebang

Question

Is there any Bash shebang objectively better than the others for most uses?

• #!/usr/bin/env bash
• #!/bin/bash
• #!/bin/sh
• #!/bin/sh -
• etc

I vaguely recall a long time ago hearing that adding a dash to the end prevents someone passing a command to your script, but can’t find any details on that.

Answer 1

#!/bin/bash is a sequence of characters (#!) called shebang and is used to tell the Linux OS which interpreter to use to parse the rest of the file. You will always see #!/bin/bash or #!/usr/bin/env bash as the first line when writing or reading bash scripts.