Tag: programming languages

Questions Related to programming languages

Read the code below. Will be the result of attempting to compile and run the code below. public class AQuestion { public void method(Object o){ System.out.println("Object Verion"); } public void method(String s){ System.out.println("String Version"); } public static void main(String args[]){ AQuestion question = new AQuestion(); question.method(null); } }
technology programming languages

  1. The code does not compile

  2. The code compiles cleanly and shows “Object Version

  3. The code compiles cleanly and shows “String Version”

  4. The code throws an Exception at Runtime

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Correct Option: C

Nohup command?

technology programming languages

  1. kill the process

  2. To run the process even you shutdown the terminal

  3. display your terminal

  4. help command

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Correct Option: B

cp command ?

technology programming languages

  1. copies a file

  2. delete a file

  3. rename a file

  4. move a file

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Correct Option: A

Grep Command ?
technology programming languages

  1. compares two directories

  2. compares the two files

  3. To search one or more files to match an expression

  4. To make links to existing files

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Correct Option: C

uniq command removes duplicate adjacent lines from sorted file?

technology programming languages

  1. True

  2. False

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Correct Option: A

awk command?
technology programming languages

  1. to change ownership of a file or directory

  2. used to schedule jobs

  3. stream line editor

  4. scripting language builtin on all unix systems

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Correct Option: D

chmod command?
technology programming languages

  1. To change the group of a file or directory

  2. To change permissions on a file

  3. To display information about mounted filesystems

  4. Tells the status of local networked machines

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Correct Option: B

tar command?
technology programming languages

  1. compresses a file and returns the original file with .z extension

  2. to backup the file systems

  3. creates an archive of files into a single file

  4. will initiate an interactive conversation with user

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Correct Option: C

env command reports information on active processes?
technology programming languages

  1. True

  2. False

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Correct Option: B

who command displays information about the current status of system.
technology programming languages

  1. True

  2. False

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Correct Option: A