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1. Top results related to what is a command line interface

   • What is Command Line Interface (CLI)?

     Command Line Interface is used to communicate with a computer program, you can input text into a by typing command lines. In this article, we will understand the workings of the command line interface, features of the command line interface, and more.

     What is the Command Line Interface?

     Command line interface (CLI), A software tool that lets you use the keyboard to interact with your operating system. Command-line interfaces first emerged on computer terminals in the middle of the 1960s as a more approachable and interactive option to the punch card-based, non-interactive interface. Any server or computer system can be configured and navigated, and its applications run using text commands through the use of a command line interface. A command-line interface is built into every operating system, including Windows, Linux, and macOS, to facilitate quicker system interaction.

     How Does Command Line Interface Work?

     While the syntax of various CLIs varies,...

     • Commands are entered using a keyboard and the command-line interface (CLI).
     • While the syntax of various CLIs varies, they all functionally carry out the same tasks.

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     1/5

   • What is a command line compiler?

     Top Answer

     Answered Nov 23, 2009 · 9 votes

     Nowadays, you tend to have environments in which you develop code. In other words, you get an IDE (integrated development environment) which is comprised of an editor, compiler, linker, debugger and many other wonderous tools (code analysis, refactoring and so forth).

     You never have to type in a command at all, preferring instead a key sequence like CTRLF5 which will build your entire project for you.

     Not so in earlier days. We had to memorize all sorts of arcane commands to get our source code transformed into executables. Such beautiful constructs as:

     cc -I/usr/include -c -o prog.o prog.ccc -I/usr/include -c -o obj1.o obj1.cas -o start.o start.sld -o prog -L/lib:/usr/lib prog.o obj1.o start.o -lm -lnet-

     Simple, no?

     It was actually a great leap forward when we started using makefiles since we could hide all those arcane commands in a complex file and simply execute make from the command line. It would go away and perform all those commands for us, and only on files that needed it.

     Of course, there's still a need for command-line compilers in today's world. The ability to run things like Eclipse in "headless" mode (no GUI) allow you to compile all your stuff in a batch way, without having to interact with the GUI itself.

     In addition, both Borland (or whatever they're calling themselves this week) and Microsoft also provide command-line compilers for no cost (Microsoft also have their Express editions for free as well).

     And gcc is also a command-line compiler. It does its one job very well and leaves it up to other applications to add a front end, if people need that sort of thing.

     Don't get me wrong. I think the whole IDE thing is a wonderful idea for a quick code/debug cycle but I find that, once my applications have reached a certain level of maturity, I tend to prefer them in a form where I can edit the code with vim and just run make to produce the end product.

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     2/5

   • What is Switch Command-Line Interface?

     Network devices communicate with each other efficiently with the help of switches. For the management of network devices, we use different types of configuration methods to configure switches and manage their information flow, sharing, and resource allocation. The command line interface is one of the configuration methods for managing network devices. A command line interface (also known as a text-based interface) is the interface through which we write commands for specific tasks or configure, manage, and monitor network devices such as switches. The command line interface allows us to enter configuration commands to get the desired output from the switch. When we enter a command in the command interface, the network software will recognize the command and perform tasks according to the specific command, so that we can manage, configure and monitor network devices on the network.

     Generally, we can access the Command Line Interface through a direct connection to the console port or remotely using the telnet command.

     Accessing the Switch Command Line Interface via console:For Accessing the Switch Command Line interface via the console port, perform the following steps:

     Step 1: Open a command prompt...

     • A graphical user interface requires a pointing device such as a mouse for selecting items. Command line interfaces, on the other hand, do not require a pointing device like a mouse for selecting items, It just needs a keyboard.
     • Spelling mistakes and typo errors are avoided in the graphics user interface but in the command line interface spelling and typo errors cannot be avoided.
     • The network engineer can simultaneously observe and operate multiple things at a time through the graphical user interface.
     • The command line interface is more difficult to use than the graphical user interface.
     • The Graphics User Interface requires more memory than the command-line interface.

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     3/5

   • What is a script that will accept a username as a command line argument and will display only that user's account information?

     Top Answer

     Answered Jul 06, 2013 · 3 votes

     Why you shouldn't do it

     There are several command-line programs that get you information from /etc/passwd, /etc/groups and other account information such as reading .plan, .project and .pgpkey

     Typically you do not WANT to use /etc/passwd directly because there may be other databases like NIS+ or LDAP maintaining your account information on the system.

     Software that gets you information about account:

     finger — Almost guaranteed to be present everywhere, appeared in BSD 3.0 finger is a network aware program and is serviced by fingerd(8) daemon for remote fingering.

     `pinky — A lightweight finger program (no networking support I think) part of GNU coreutils

     id – Available on most System V compatible environments (if I recall correctly?)

     who – display login information, it will also display if users are accepting messages over the talk/write protocol and also if they will accept talk write requests on your control terminal (see mesg(1) for details)

     Okay maybe you want to do it for fun

     Here is a quick and dirty way that is limited to local use:

     #!/bin/bash-user="$1"--awk -F: '/^'$user'/ { print "Login: " $1 " UID: " $3 " GID: " $4 \ " GECOS: " $5 " Home Directory: " $6 " Shel: " $7 }' /etc/passwd-

     You can similarly access .plan etc. from the user's home directory.

     Read up passwd(5) man page, man 5 passwd to get details of the password structure:

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     4/5

   • What is a mysql disconnect command line (why is it useful)?

     Top Answer

     Answered Dec 30, 2013 · 0 votes

     From the mysql docs

     mysql is a simple SQL shell with input line editing capabilities. It supports interactive and noninteractive use.

     The fact is that the SQL shell should not be causing major load on your box. The standard practice is to just close the shell and kill the program.

     Typing Control+C causes mysql to attempt to kill the current statement. If this cannot be done, or Control+C is typed again before the statement is killed, mysql exits

     When you exit mysql command line tool the process will end and mysql will continue doing its thing. But the answer to your question is no SQL shell should not be slowing things.

     From PHP its a good idea to close the connection when you are done using it. To check out what processes are running open up mysql cmd tool and try the following to see what is connected to your mysql instance.

     SHOW PROCESSLIST

     if showprocesslist isnt what you were looking for give this a shot:

     mysql > show status like '%onn%';

     Hopefully this will give you enough information to handle the traffic load.

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     5/5

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2. www.geeksforgeeks.org › what-is-command-line-interface-cliWhat is Command Line Interface (CLI)? - GeeksforGeeks

   www.geeksforgeeks.org › what-is-command-line-interface-cli

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   Mar 18, 2024 · An interface that is text-based and used to enter instructions that communicate with an operating system on a computer is called a command line interface (CLI). The default shell, which stands between the user and the operating system, assists the CLI in its operations.

3. builtin.com › software-engineering-perspectives › command-line-interfaceWhat Is a Command Line Interface? (CLI Definition) | Built In

   builtin.com › software-engineering-perspectives › command-line-interface

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   Mar 1, 2023 · What Is a Command-Line Interface? A command-line interface (CLI) allows you to navigate, run programs or configure your computer system by entering text commands. Here’s what makes a CLI distinct from a GUI.

4. www.techtarget.com › searchwindowsserver › definitionWhat is a command-line interface (CLI)? - TechTarget

   www.techtarget.com › searchwindowsserver › definition

   A command-line interface (CLI) is a text-based user interface ( UI) used to run programs, manage computer files and interact with the computer. Command-line interfaces are also called command-line user interfaces, console user interfaces and character user interfaces.

5. en.wikipedia.org › wiki › Command-line_interfaceCommand-line interface - Wikipedia

   en.wikipedia.org › wiki › Command-line_interface

   • Cached

   A command-line interface ( CLI) is a means of interacting with a computer program by inputting lines of text called command-lines. Command-line interfaces emerged in the mid-1960s, on computer terminals, as an interactive and more user-friendly alternative to the non-interactive interface available with punched cards .

6. www.w3schools.com › whatis › whatis_cliWhat is Command Line Interface (CLI)? - W3Schools

   www.w3schools.com › whatis › whatis_cli

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   CLI stands for: Command Line Interface. Command Line Interpreter. Command Line Input. CLI is a command line program that accepts text input to execute operating system functions. In the 1960s, using only computer terminals, this was the only way to interact with computers.

7. www.g2.com › articles › command-line-interfaceWhat Is Command Line Interface (CLI)? How to Use It - G2

   www.g2.com › articles › command-line-interface

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   Apr 24, 2024 · What is a command line interface? A command line interface (CLI) is a computer program that runs on text-based inputs to execute different tasks. Instead of pointing and clicking with a mouse, it receives single-line commands that interact with system elements like file management.

8. aws.amazon.com › what-is › cliWhat is a CLI? - Command Line Interface Explained - AWS

   aws.amazon.com › what-is › cli

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   A command line interface (CLI) is a text-based interface where you can input commands that interact with a computer’s operating system. The CLI operates with the help of the default shell, which is between the operating system and the user.

9. www.freecodecamp.org › news › command-line-for-beginnersCommand Line for Beginners – How to Use the Terminal Like a Pro...

   www.freecodecamp.org › news › command-line-for-beginners

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   Apr 5, 2022 · Terminal: A terminal is a text input and output environment. It is a program that acts as a wrapper and allows us to enter commands that the computer processes. In plain English again, it's the "window" in which you enter the actual commands your computer will process.

10. www.codecademy.com › article › command-line-interfaceCommand Line Interface | Codecademy

    www.codecademy.com › article › command-line-interface

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    The command line interface is a program on your computer that allows you to create and delete files, run programs, and navigate through folders and files. On a Mac, it’s called Terminal, and on Windows, it’s Command Prompt. Most developers navigate their computers and run the programs they build directly from the Command Line.

11. blog.emb.global › command-line-interface-cliWhat is Command Line Interface (CLI): A Comprehensive Guide

    blog.emb.global › command-line-interface-cli

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    Jun 6, 2024 · The Command Line Interface (CLI) operates through a text-based interface where users interact with the computer by typing commands into a console or terminal. These commands are interpreted and executed by the computer’s operating system.