Unix - Study Mode
[#506] A user-defined variable is initialized to . . . . . . . .
Correct Answer
(B) zero or null string
[#507] -f option when used with mv command overwrites existing files without prompting any messages.
Correct Answer
(A) True
[#508] Which of the following is performed by expr string handling's function?
Correct Answer
(D) determine the length of string, extract and locate the position of the string
[#509] Which of the following is a correct syntax for performing substitution on a file?
Correct Answer
(A) :address/source_pattern/target_pattern/flag
[#510] For locating the first position of a character in a string we can use expr command.
Correct Answer
(A) True