bash - 什么是首选的Bash shebang？(What is the preferred Bash shebang?)

Question

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

(在大多数情况下， Bash shebang是否客观上比其他人更好？)

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

  (等等)

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.

(我模糊地回忆起很久以前的一次听说，在最后添加一个破折号可以防止有人将命令传递给你的脚本，但是找不到任何有关它的细节。)

  ask by Kurtosis translate from so

Answer 1

You should use #!/usr/bin/env bash for portability : different *nixes put bash in different places, and using /usr/bin/env is a workaround to run the first bash found on the PATH .

(你应该使用#!/usr/bin/env bash来实现可移植性 ：不同的* nixes将bash放在不同的地方，使用/usr/bin/env是一种解决方法来运行在PATH上找到的第一个bash 。)

And sh is not bash .

(而sh不是bash 。)