Tag: technology

Questions Related to technology

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

How to display only hidden files in UNIX?
technology operating systems

  1. ls -a

  2. ls -a|grep "^."

  3. ls -a|grep "^."

  4. ls -ltra

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Correct Option: C

Which of the following commands is not a filter?
technology operating systems

  1. man

  2. cat

  3. head

  4. pg

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Correct Option: A