I have a script named test.sh and the contents are as follows: $ cat test.sh echo hi rm -f test.sh echo hi ######## What will be the output of the following comand: $ sh test.sh

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the first 'hi' will be displayed but it will say "Could not delete file: in use" and will exit the script
the first 'hi' will be displayed but it will say "Could not delete file: in use" and will then echo the second 'hi'
The script will display 2 'hi' and the file will also be deleted
The first 'hi' will be displayed, the script will be deleted , but the 2nd 'hi' will not be displayed.

Answer

Correct Option: C

Question 8

I have a file named "-p" in my home directory. Which of the following commands will be used to delete this file?

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rm -p
rm -f -p
rm -f -- -p
rm -f "-p"

Answer

Correct Option: C

Question 9

I want to change the date of my linux server to 'Mon Nov 23 18:08:07 IST 2009'. Which of the following commands wil help?(ignore the seconds in the date)

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a) date 1123180809
b) date 2311180809
c) date -s "Mon Nov 23 18:08:07 IST 2009"
d) Both a and c

Answer

Correct Option: D

Question 10

A script is executing since last 10 minutes and is expected to take another 10 minutes. So I decide to send it to background. Which of the following steps will do it?

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Press Ctrl-Z and type "bg"
Press Ctrl-D and type "bg"
Open a new termial and type "bg " where is the pid of that script
None of these

Answer

Correct Option: A

Question 11

I want to send a file as an attachment to my mailserver from my unix server using mailx. Which of the following will help me create the file as attachment?

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uuencode coomand
attach command
compress command
Its not possilble to send attachment from unix

Answer

Correct Option: A

Question 12

What is the output of the following command in bash shell on Linux? $ i=2 $ [ $i -lt 2 ] || echo great

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great
no output
test: syntax error
we will have to export the value of i

Answer

Correct Option: A

Question 13

Find the output of the last echo command: $ pwd /home/guest $ cat test.sh export i=100 $ sh test.sh $ echo $i

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100
blanck line
No such variable $i
None of these

Answer

Correct Option: B

Question 14

What is the output of the following command? $ cd -

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change to home directory
change directory to last directory as saved in the environment variable OLDPWD
move to the last directory of that structure
None of these

Answer

Correct Option: B

Question 15

The password of an unix user can be changed by the following command:

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passwd
passwd and pwdadm
pwdadm
password

Answer

Correct Option: B

Question 16

What does this command show? $ echo $TZ

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The DayLight Saving Time
The Time zone
blanck line
You will have to set the value of TZ variable first

Answer

Correct Option: B

Question 17

What is the advantage of grep over awk with reference to decision-making scripts?

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grep shows different values for $? while awk always shows $?=0
grep is faster and works on rows level
awk can only work on field level
grep has -i option which can be used for ignoring case.

Answer

Correct Option: A

Question 18

What is the command to check all active volume groups on AIX?

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lsvg
lsvg -o
lsvg -a
activevg

Answer

Correct Option: B

Question 19

What is the output of the above command?

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3*2
6
syntax error
Blanck Line

Answer

Correct Option: A

Question 20

What is the command to execute the executable script test.sh in the current shell?

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./test.sh
. test.sh
sh test.sh
exec test.sh

Answer

Correct Option: B

Description: operating systems Online Quiz - 53
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: operating systems

operating systems Online Quiz - 53

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