Tag: operating systems

Questions Related to operating systems

A local variable can be used by child processes of a shell.
technology operating systems

  1. True

  2. False

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Correct Option: B

What is the first process that comes into existence whenever system is booted?
technology operating systems

  1. init

  2. shell

  3. kernel

  4. login

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Correct Option: C

What is the process id and group id of the init process?
technology operating systems

  1. 1,0

  2. 0,1

  3. 1,1

  4. 0,2

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Correct Option: A

Which of these is not a valid mode in the VI editor in unix?
technology operating systems

  1. command

  2. ex

  3. edit

  4. insert

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Correct Option: C

Which is not a filter in unix?
technology operating systems

  1. pg

  2. ksh

  3. awk

  4. grep

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Correct Option: B

What is the command for listing all the background jobs?
technology operating systems

  1. ps

  2. jobs

  3. processes

  4. kill

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Correct Option: B

What is the command for killing the suspended job number three?
technology operating systems

  1. kill $3

  2. kill <<3

  3. kill %3

  4. terminate #3

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Correct Option: C

Which of the following does one need to log in to Unix?
technology operating systems

  1. username

  2. password

  3. host name

  4. all of the above

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Correct Option: D

Which command always puts you in your home directory?
technology operating systems

  1. home

  2. cd

  3. cd . .

  4. pwd

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Correct Option: B

What will the following command do? % chmod og+r *.jpg
technology operating systems

  1. Change the permissions on all the .jpg file so that it is readable.

  2. It is not a valid command because the file name contains a *.

  3. Change the permissions on all image files

  4. Change permissions on the directory so that image files can be saved in it.

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Correct Option: A