Command-line argument parsing

Different command-line argument parsing methods are used by different programming languages to parse command-line arguments.

C
C uses  to process command-line arguments.

An example of C argument parsing would be: C also has functions called getopt and getopt_long.

C#
An example of C# argument parsing would be:

Java
An example of Java argument parsing would be:

Kotlin
Here are some possible ways to print arguments in Kotlin:

Perl
Perl uses.

FT or

AWK
AWK uses  also.

PHP
PHP uses  as a count of arguments and   as an array containing the values of the arguments. To create an array from command-line arguments in the  format, the following might be used:

PHP can also use.

Python
Python uses, e.g.:

Python also has a module called  in the standard library for parsing command-line arguments.

Racket
Racket uses a  parameter, and provides a  library for parsing these arguments. Example: The library parses long and short flags, handles arguments, allows combining short flags, and handles  and   automatically:

Rexx
Rexx uses, e.g.:

Rust
The args are in.

Node.js
JavaScript programs written for Node.js use the  global variable.

Node.js programs are invoked by running the interpreter node interpreter with a given file, so the first two arguments will be  and the name of the JavaScript source file. It is often useful to extract the rest of the arguments by slicing a sub-array from.