Tag: linux

Questions Related to linux

From a command prompt, what does the command "ls" do?

linux

  1. Lists the settings of the OS

  2. Lists the contents of the directory

  3. List command to list contents of files

  4. Finnish words, means to direct a file to a port

  5. None of the Above

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Correct Option: B

Which command creates a file system?

linux

  1. fdisk

  2. crfs

  3. mkfs

  4. fs

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Correct Option: C

What is the default administrator username?

linux

  1. administrator

  2. admin

  3. superuser

  4. root

  5. head

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Correct Option: D

Which of the following are valid Linux wildcards? (Choose all that apply)

linux
    • and ?

  2. /

  3. ?

  4. &

  5. Z

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Correct Option: A

AI Explanation

To answer this question, you need to understand Linux wildcards.

Option A) * and ? - This option is correct because * is a wildcard that represents any sequence of characters, and ? is a wildcard that represents any single character.

Option B) / - This option is incorrect because / is not a wildcard. It is used as a directory separator in Linux.

Option C) ? - This option is correct because ? is a wildcard that represents any single character.

Option D) & - This option is incorrect because & is not a wildcard. It is used as a control operator in Linux.

Option E) Z - This option is incorrect because Z is not a wildcard. It is just a letter.

The correct answer is A) * and ?. These wildcards are commonly used in Linux to represent patterns of filenames or commands.

What does the command "ps" do?
linux

  1. Prints the directory

  2. Shows what processes are running

  3. Print status of LPT1

  4. Produces system statistics

  5. None of the above

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Correct Option: B
Explanation:

To understand what the command "ps" does, the user needs to have knowledge about command line interfaces and operating systems.

The correct answer is:

B. Shows what processes are running

Explanation:

The "ps" command is a command used in Unix-like operating systems (such as Linux and macOS) to display information about the currently running processes on the system. It provides a snapshot of the processes running at the time the command is executed, including details such as the process ID (PID), CPU and memory usage, and the parent process ID (PPID). This information is useful for monitoring system resources, troubleshooting performance issues, and managing processes on the system.

Let's go through the other options:

A. Prints the directory: This option is incorrect. The "ps" command does not print the directory. To print the current directory in a command line interface, the "pwd" command is used.

C. Print status of LPT1: This option is incorrect. The "ps" command does not print the status of LPT1. LPT1 is a parallel port used for connecting printers in older systems.

D. Produces system statistics: This option is partially incorrect. While the "ps" command displays information about processes running on the system, it does not provide comprehensive system statistics. For system statistics, other commands like "top" or "sar" may be used.

E. None of the above: This option is incorrect. As explained above, option B is the correct answer.

Therefore, the correct answer is:

The Answer is: B. Shows what processes are running

You are working in Linux when a program hits a flaw and stops running. Which command can be used to end the process?

linux

  1. kill

  2. stop

  3. end

  4. wait

  5. CTL-ALT-DEL

Show answer
Correct Option: A

AI Explanation

To answer this question, we need to understand how to terminate a process in Linux.

Option A) kill - This option is correct because the "kill" command is used to terminate a process in Linux. The kill command sends a signal to a process, and by default, it sends the SIGTERM signal which terminates the process gracefully. If the process does not respond to the SIGTERM signal, you can send the SIGKILL signal using the "-9" option to forcefully terminate the process.

Option B) stop - This option is incorrect because there is no specific "stop" command in Linux to terminate a process. The correct command is "kill".

Option C) end - This option is incorrect because there is no specific "end" command in Linux to terminate a process. The correct command is "kill".

Option D) wait - This option is incorrect because the "wait" command is used to wait for a process to complete, not to terminate a process.

Option E) CTL-ALT-DEL - This option is incorrect because pressing "CTL-ALT-DEL" in Linux does not directly terminate a process. It opens the system's task manager, where you can manually select and terminate a process.

The correct answer is A) kill. This option is correct because the "kill" command is used to terminate a process in Linux.

A user is logged into the Linux workstation, what is the best way to login to root from a shell prompt?

linux

  1. login root

  2. chuser root

  3. su

  4. root

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Correct Option: C

Linux allows filenames up to what number of characters?

linux

  1. 8

  2. 11

  3. 256

  4. 512

  5. Unlimited

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Correct Option: C

T/F: The command "pwd" displays the directory
linux

  1. True

  2. False

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Correct Option: A

T/F: To move files, use the "move" command.

linux

  1. True

  2. False

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Correct Option: B