Tag: operating systems

Questions Related to operating systems

Command which can be used to copy the contents to file and also display on screen
technology operating systems

  1. tee

  2. > (Redirection operator)

  3. Redirection operator (>) and Standard Ouput ($1)

  4. All

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Correct Option: A

Command used to get the top 5 file / directory occupying more space.
technology operating systems

  1. du | sort -r | head -5

  2. du | sort -nr | head -5

  3. du | sort -n | head -5

  4. du

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Correct Option: B

Output of "echo $$"
technology operating systems

  1. $$

  2. $

  3. Process ID of the current session.

  4. Process ID of the parent session

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Correct Option: C

Command used to check the usage of the various file systems mounted
technology operating systems

  1. df

  2. du

  3. 1 and 2

  4. None

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Correct Option: A

Display only files with ".zip" extension from the current directory
technology operating systems

  1. ls -ltr *.zip

  2. ls -ltr | grep "zip$"

  3. 1 and 2

  4. None

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Correct Option: C

Which command would generate the ouput "Today is " eg: If today was 25th oct then the output would be "Today is 101025"
technology operating systems

  1. echo "Today is date +%y%m%d"

  2. 1 and 2

  3. echo Today is date +%y%m%d

  4. None

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Correct Option: B

Command used to verify the status of the Argon agent
technology operating systems

  1. ps -ef | grep argon

  2. ps -ef | grep "argon"

  3. 1 and 2

  4. None

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Correct Option: C

How kill the process in a single line?
technology operating systems

  1. ps

  2. kill PID

  3. kill ps

  4. kill -9 "PID"

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Correct Option: D

What is the default value of umask?
technology operating systems

  1. 022

  2. 032

  3. 644

  4. 000

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Correct Option: A

What is the command to see the number of fork in Linux system ?
technology operating systems

  1. cat /proc/meminfo

  2. vmstat

  3. vmstat -f

  4. ls

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Correct Option: C