Question

In UNIX there are ___ major types of shells.

(a) 2

(b) 3

(c) 4

(d) many

This question was addressed to me in final exam.

This interesting question is from Shell Basics topic in division The Shell of Unix

Answer 1

The correct answer is (a) 2

Best explanation: In UNIX, there are two major types of shells.

•    Bourne shell

•    C shell

These two categories are further divided into subcategories.

Bourne shell has the following subcategories:-

•     Bourne shell (sh)

•     Korn shell (ksh)

•     Bourne Again shell (bash)

•     POSIX shell (sh)

C shell has the following subcategories:-

•    C shell (csh)

•    TENEX/TOPS C shell (tcsh)