Naming conflict with File extension and Shebang in Linux?

Question

I have seen some Linux scripts having Shebang different from the file extension.

Ex:

• somefile.sh has #!/bin/bash inside it
• somefile.ksh has #!/bin/sh inside it
• somefile.bash has #!/bin/sh inside it

Can someone tell me what is proper naming convention to be followed while mentioning file extension and Shebang inside it?

Answer 1

There is no relation between extension and shebang. Extensions are for users only.

Also for bash files you can use #!/bin/bash. And /bin/sh is usually a symbolic link to /bin/bash or /bin/dash, depends upon the system.