Linux in a Nutshell, 6th Edition

Name

#!shell

Synopsis

#!shell [option]

Used as the first line of a script to invoke the named shell. Anything given on the rest of the line is passed as a single argument to the named shell. This feature is typically implemented by the kernel, but may not be supported on some older systems. Some systems have a limit of approximately 32 characters on the maximum length of shell. For example:

#!/bin/sh