QUESTION 11 Unquoted $@ and $* evaluate to the same thing True False 2 points QU

Question

QUESTION 11

Unquoted $@ and $* evaluate to the same thing

True

False

2 points   

QUESTION 12

The command

sort +2 -3 names

Sorts the file names on the third word.

True

False

2 points   

QUESTION 13

Changes which a child process makes to the environment do effect its parents environment. For example, If a child process changes and environment variable, that change happens in the parent process.

True

False

2 points   

QUESTION 14

In sed, when you do pattern matching, the largest pattern is always matched first, left to right.

True

False

2 points   

QUESTION 15

The command

echo "This is a message" 2>&1

writes its output "This is a message" to standard error.

True

False

Explanation / Answer

11) True

$@ and $# means the same, they both mean all command line arguments

12) True , it sort based on field 3

13) False, Because changes in one process dont effect the other

14) True, The largest pattern is always matched first , left to right

15) True, 2 means output and 1 means output stream , so it writes output to standard error

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