Tag: operating systems

Questions Related to operating systems

Whish command is used to find the name of the UNIX System ?
technology operating systems

  1. Pipes

  2. Uname

  3. Inode

  4. Filters

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Correct Option: B

Which of the following is used to check out the print queue ?
technology operating systems

  1. pq

  2. lqp

  3. lpr

  4. lpq

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Correct Option: D

Which command is to search for the information in a file or files ?
technology operating systems

  1. grep

  2. awk

  3. sed

  4. vi

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Correct Option: A

What is the Octal representation of the write permission ?
technology operating systems

  1. 1

  2. 4

  3. 2

  4. 0

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Correct Option: C

Which command is used to find the default permission ?
technology operating systems

  1. chmode

  2. Umask

  3. chmode -r

  4. chmode -l

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Correct Option: B

While in command mode you press "a" : what happens?
technology operating systems

  1. This is an invalid command

  2. The editor goes in to insert mode and start inserting text after the current cursor location

  3. The editor searches for charater "a" in the open file

  4. The editor gives a beep sound

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Correct Option: B

You have made changes to a file and want to quit vi without saving these changes. what command will you use?
technology operating systems

  1. :wq

  2. x

  3. q!

  4. w!

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Correct Option: C

You want to repalce "lion" with "tiger" in your field at all location in the vi editor.You use
technology operating systems

  1. /s/lion/tiger

  2. s/lion/tiger

  3. s/lion/tiger/g

  4. s/tiger/lion/g

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Correct Option: A

Which key sequence delete the previous word in vi editor?
technology operating systems

  1. dW

  2. dG

  3. db

  4. dd

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Correct Option: C

What are the modes used in vi editor?
technology operating systems

  1. command mode

  2. Last line mode

  3. insert or input mode

  4. All of the above

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Correct Option: D