Question

POSIX recommends the use of ____ instead of archaic `command ` for command substitution.

(a) |

(b) #

(c) %

(d) $

Answer 1

Right answer is (d) $

Explanation: POSIX recommends the use of the form $(command) instead of archaic `command` for command substitution. For example, to display the date using command substitution use the following command: