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Q.

Which of the following commands is used to obtain a list of all files by modification time?

A

ls -1

B

ls -t

C

ls -i

D

ls -R

E

None of the above

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MCQ

1.

Which command is used to copy all files having the string chap and any two characters after that to the progs directory?

A

cp chap?? progs

B

cp chap* progs

C

cp chap[12] /progs/*.*

D

cp chap?? /progs/*

E

None of the above

Discussion

MCQ

2.

Which of the following commands can be used to get information about all users who are currently logged into the system?

A

which

B

who

C

who am i

D

1 /u

E

None of the above

Discussion

MCQ

3.

Which of the following special shell variables is used to process number of the current shell?

A

$!

B

$$

C

$0

D

$*

E

None of the above

Discussion

MCQ

4.

Which command is used to print a file?

A

print

B

prn

C

pg

D

lp

E

None of the above

Discussion

MCQ

5.

Which command is used to assign only read permission to all three categories of the file 'note'?

A

chmod go+r note

B

chmod a-rw

C

chmod ugo=r note

D

chmod u+r,g+r,o-x note

E

None of the above

Discussion

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