Unix Questions

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101.

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

Correct Answer: B

None.

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102.

Which of the following keys is used to overstrike a whole line?

A

R

B

v

C

C

D

u

E

None of the above

Correct Answer: A

None.

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103.

Which command is used to locate all the .profile files in the system?

A

ls profile

B

find /-name profile -print

C

cd /.profile

D

l -u .profile

E

None of the above

Correct Answer: B

None.

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104.

The File that contains a set of instructions which are performed when a user logs in, is

A

.exrc

B

.profile

C

.autoexec

D

autoexec.bat

E

None of the above

Correct Answer: B

None.

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105.

The octal representation 652 indicates

A

Execute permission for the owner

B

Write permission for others

C

Read and write permission of groups

D

All of the above

E

None of the above

Correct Answer: B

None.

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106.

Which of the following command is used to count just the number of lines contained in a file?

A

wc -l

B

wc -c

C

wc -w

D

wc -r

E

None of the above

Correct Answer: A

None.

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107.

Which of the following command is used to go to home directory?

A

cd..

B

cd/

C

cd

D

cd HOME.

E

None of the above

Correct Answer: C

None.

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108.

Which command is used to move all files to the bin sub-directory of the parent directory?

A

mv *.* /bin/

B

mv * /bin/*

C

mv * ../bin

D

mv * ../bin *.*

E

None of the above

Correct Answer: C

None.

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109.

Which command is used to save the standard output in a file, as well as display it on the terminal?

A

more

B

cat

C

grep

D

tee

E

None of the above

Correct Answer: D

None.

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110.

The command that can be used to restrict incoming messages to a user is

A

mesg

B

grep

C

halt

D

sleep

E

None of the above

Correct Answer: A

None.

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