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Node.js. Node.js is a cross-platform, open-source JavaScript runtime environment that can run on Windows, Linux, Unix, macOS, and more. Node.js runs on the V8 JavaScript engine, and executes JavaScript code outside a web browser . Node.js lets developers use JavaScript to write command line tools and for server-side scripting.
The command printenv can also be used to print a single variable by giving that variable name as the sole argument to the command. DOS, OS/2 and Windows. In DOS, OS/2 and Windows command-line interpreters such as COMMAND.COM and CMD.EXE, an environment variable is retrieved by placing a % sign before and after it.
Most modern code editors and IDEs allow you to set up a localhost server – eg. use atom-live-server in Atom, and Live Server in VS Code. WebStorm and PhpStorm have the feature built in, without requiring an extension. You can also use a third party program such as Node.js 's npx http-server command, or XAMPP.
Yarn is one of the main JavaScript package managers, [3] [4] developed in 2016 by Sebastian McKenzie of Meta (formerly Facebook) for the Node.js JavaScript runtime environment. An alternative to the npm package manager, Yarn was created as a collaboration of Facebook (now Meta ), Exponent (now Expo.dev), Google, and Tilde (the company behind ...
unlink. In Unix-like operating systems, unlink is a system call and a command line utility to delete files. The program directly interfaces the system call, which removes the file name and (but not on GNU systems) directories like rm and rmdir. [1] If the file name was the last hard link to the file, the file itself is deleted as soon as no ...
Program execution. In computer programming, a runtime system or runtime environment is a sub-system that exists both in the computer where a program is created, as well as in the computers where the program is intended to be run. The name comes from the compile time and runtime division from compiled languages, which similarly distinguishes the ...
An MS-DOS command line, illustrating parsing into command and arguments. A command-line argument or parameter is an item of information provided to a program when it is started. A program can have many command-line arguments that identify sources or destinations of information, or that alter the operation of the program.
Arguments: path This optional command-line argument specifies the directory to make the current directory. If path is omitted, the path at the top of the directory stack is used, which has the effect of toggling between two directories. popd popd See also. cd (command) List of DOS commands; List of Unix commands; References