e/Interpreter directive

Information
has gloss	eng: An interpreter directive is a single line of text at the beginning of a file which determines what command interpreter is used to parse and execute the file's content. In its most common form, a Unix command script, it consists of an initial "magic number", hexadecimal 0x23 0x21, represented in ASCII as #! (a number sign and an exclamation point), optional spaces or tabs, the pathname of an interpreter command, any additional parameters, and a newline character. When the command is executed, it is converted to an execution of the interpreter, with the parameters and, through a method somewhat dependent on the operating system, a filename associated with the script itself from which the interpreter is expected to take input, followed by any additional arguments present on the command line where the command was invoked.
lexicalization	eng: interpreter directive
instance of	e/Command shells