Which one of the following is not a valid shell variable?
A. _san
B. san_2
C. _san_2
D. 2_san
Answer:A
Which one of the following is not a valid shell variable?
A. _san B. san_2 C. _san_2 D. 2_san
Explanation:The shell variable can contain only letters(a to z or A to Z), numbers(0 to 9), or a underscore character(_) and a variable can not start with a number.