interpreter reference updated to be portable

[tnymlr]

Just change a #!/bin/bash to #!/usr/bin/env bash for a portability. Now runs on OpenBSD without errors.

[karbassi]

Doing some research on this, here are the pros/cons.

Pros

• Running a command through /usr/bin/env has the benefit of looking for whatever the default version of the program is in your current environment. This way, you don't have to look for it in a specific place on the system, as those paths may be in different locations on different systems. As long as it's in your path, it will find it.

Cons

• Since you aren't calling an explicit executable, it's got the potential for mistakes, and on multiuser systems security problems. If someone managed to get their executable called bash in your path, for example.

Thoughts @inkarkat?

[inkarkat]

I agree with your findings and don't have a clear-cut opinon. Portability should be as high as possible, especially for a universal tool like this, so I'm slightly in favor of it.

[tnymlr]

I'd say that if somebody replaced bash executable on a system then a person has much bigger security problems than this tool can expose.

[karbassi]

I'm for this. Merging.