QUESTION 21 The command: tr -d \'\\012\' removes the newline from the input stre

Question

QUESTION 21

The command:

tr -d ' '

removes the newline from the input stream

True

False

2 points   

QUESTION 22

By convention an exit status of non-zero indicates success.

True

False

2 points   

QUESTION 23

Which statement best describes the streams that are automatically connected to each process?

Standard Input (stdin)

Standard Ouput (stdout)

Stadnard Error (stderr)

A & B & C

None of the above

4 points   

QUESTION 24

If shell script has owner, group, and others (world) execute permissions set but only read permissions set for group and others, this script can be executed by the owner.

True

False

2 points   

QUESTION 25

Which statement best describes the command that finds for the string $FOO.

grep "$FOO"

grep '$FOO'

grep $FOO

A & C

B & C

Standard Input (stdin)

Standard Ouput (stdout)

Stadnard Error (stderr)

A & B & C

None of the above

Explanation / Answer

QUESTION 22

By convention an exit status of non-zero indicates success.

True

False

Answer)

False.

Exit status zero indicates success and non-zero indicates failure.

QUESTION 23

Which statement best describes the streams that are automatically connected to each process?

a.

Standard Input (stdin)

b.

Standard Ouput (stdout)

c.

Stadnard Error (stderr)

d.

A & B & C

e.

None of the above

Answer)

d.

A & B & C.

stdin, stdout and stderr are automatically connected to each process.

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