Tag: operating systems

Questions Related to operating systems

The most popular shell for unix till date is:

technology operating systems

  1. Bourne

  2. Bash

  3. C shell

  4. Korn shell

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Correct Option: B

Which of the following is/are text editors in Unix/Linux?
technology operating systems

  1. Notepad

  2. Emacs

  3. Vi

  4. Notepad ++

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Correct Option: B,C

What is the command to change the owner of a file?
technology operating systems

  1. chmod

  2. tee

  3. chown

  4. chgrp

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Correct Option: C

Which command lets you change back to the last working directory?
technology operating systems

  1. cd -

  2. cd ~

  3. cd ..

  4. cd .

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Correct Option: A

Which command should be used to give execute access to a file to everybody in the system?
technology operating systems

  1. chmod u+c filename

  2. chmod g+x filename

  3. chmod og-rx filename

  4. chmod o+x filename

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Correct Option: D

Which command is used to display the contents of a file named "TEST" in reverse order?
technology operating systems

  1. cat -r TEST;

  2. tac TEST

  3. rev TEST

  4. cat -R TEST

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Correct Option: B

The shortcut to suspend existing running jobs is:

technology operating systems

  1. ctrl+a

  2. ctrl+z

  3. ctrl+c

  4. ctrl+s

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Correct Option: B

passwd command is owned by root and hence can be run by root only
technology operating systems

  1. True

  2. False

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Correct Option: B

An alternative to ls command
technology operating systems

  1. dir

  2. list

  3. echo *

  4. cat

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Correct Option: C

What will the following command do where foo and foo1 are both directories? rm ./foo ./foo/foo1

technology operating systems

  1. Delete foo

  2. Delete foo and foo1

  3. Produce an error

  4. None of the above

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Correct Option: C