Quick Answer: What Is The Output Of Who Command?

What is the output of who command Mcq?

Explanation: who command output the details of the users who are currently logged in to the system.

The output includes username, terminal name (on which they are logged in), date and time of their login etc.


How do I capture a top output output of a file?

However, besides real time viewing of the running system, top command output can be saved to a file, by using the -b flag, which instructs top to operate in batch mode and -n flag to specify the amount of iteration the command should output.

What is the output of ls command?

The output from ls -l summarizes all the most important information about the file on one line. If the specified pathname is a directory, ls displays information on every file in that directory (one file per line).

Which command is used to identify files?

The ‘file’ command is used to identify the types of file. This command tests each argument and classifies it. The syntax is ‘file [option] File_name’.

How do you run the top command continuously?

Typing c while running top will display the full path for the currently running process. The top command will normally run continuously, updating its display every few seconds.

What is the command to find a file in Linux?

To determine the file type in Linux, we can use the file command. This command runs three sets of tests: the filesystem test, magic number test, and language test. The first test that succeeds causes the file type to be printed. For example, if a file is a text file, it will be recognized as ASCII text.

Which is not internal command?

The “is not recognized as an internal command” error usually occurs because the computer can’t find the executable that you’re asking it to launch. However, you can provide it with the full path to your executable file and it should then be able to run it without any issues. Launch a Command Prompt window on your PC.

How do I enter terminal?

Linux: You can open Terminal by directly pressing [ctrl+alt+T] or you can search it up by clicking the “Dash” icon, typing in “terminal” in the search box, and opening the Terminal application. Again, this should open up an app with a black background.

Which command will print all files/folders similar to ls command?

The printf command is used to format and print text. This command will print the given arguments according to the given format, or execute according to given option. Unlike the “echo” command, the print command will display both files and directories.

Who command terminal?

The basic syntax for using who command is as follows. 1. If you run who command without any arguments, it will display account information (user login name, user’s terminal, time of login as well as the host the user is logged in from) on your system similar to the one shown in the following output.

Which is an internal command?

An internal command is an MS-DOS command that is stored in the system memory and loaded from the command.com or cmd.exe. The illustration shows how commands contained within command.com are part of the command.com file. However, with the external commands, each command is a separate file.

What command is used to remove files?

rm commandUse the rm command to remove files you no longer need. The rm command removes the entries for a specified file, group of files, or certain select files from a list within a directory.

What is the difference between internal and external commands?

Internal commands are DOS commands embedded into cmd.exe shell. They are always available to the user and tend to focus on file and folder commands. An example of a internal command would be “CLS” to clear the screen. External commands are not located in the shell but are in program files stored on disk.

Is CMD a terminal?

So, cmd.exe is not a terminal emulator because it is a Windows application running on a Windows machine. There is no need to emulate anything. … cmd.exe is a console program, and there are lots of those. For example telnet and python are both console programs.

How do I get all commands in Terminal?

20 Answerscompgen -c will list all the commands you could run.compgen -a will list all the aliases you could run.compgen -b will list all the built-ins you could run.compgen -k will list all the keywords you could run.compgen -A function will list all the functions you could run.More items…•

What is the total in LS?

The “total” is the disk usage of listed files (because of -a including the . and .. entries) in blocks (1024 bytes or if POSIXLY_CORRECT is set in 512 bytes), not including the content of subdirectories.

What is CPU in top command?

The top command produces a frequently updated list of processes. By default, the processes are ordered by percentage of CPU usage, with only the “top” CPU consumers shown. The top command shows how much processing power and memory are being used, as well as other information about the running processes.

What is the command to count the number of characters in a file?

The most easiest way to count the number of lines, words, and characters in text file is to use the Linux command “wc” in terminal. The command “wc” basically means “word count” and with different optional parameters one can use it to count the number of lines, words, and characters in a text file.

What are the internal and external command?

The internal commands reside in COMMAND.COM, which loads into memory when the computer system is started; these commands do not reside on disk. The external commands are files that do reside on disk and have an extension of . … Both command types are executed from the MS-DOS prompt.

How do you kill a process?

To kill a process use the kill command. Use the ps command if you need to find the PID of a process. Always try to kill a process with a simple kill command. This is the cleanest way to kill a process and has the same effect as cancelling a process.

How do you read top command output?

What is Top Command and How to Read Top Command?​Top command is one of the basic command to monitor server processes in Linux. … Let’s see every single row of the output to explain all the information found within the screen. … Second Row : task.Third Row : cpu. … Fourth and Fifth Row : Memory usage.This rows will provide you the information about the RAM usage.