![]() ![]() For example, the dotnet build command includes the -no-restore option, which you can specify to disable the restore command from running implicitly (and instead relying on prior execution of the restore command). Options: These provide a way to modify the behavior of a command. For instance, the command “dotnet add package” has “dotnet” as the root command, “add” as a subcommand and “package” as the subcommand to add (perhaps call it the sub-subcommand?). Subcommands to the root command-the name of the executable itself (for example, git.exe)-may themselves have their own subcommands. Technically, the commands specified after the executable name are, in fact, subcommands. Some of the built-in commands for git are branch, add, status, commit and push. Here’s a description of each construct:Ĭommands: These are the actions that are supported by the application command line. The constructs supported include commands, options, arguments, directives, delimiters and aliases. Invokes functionality that’s configured to execute based on the command-line value.(Technically, command-line hosts allow for the combining of words into a single token using quotes.) Enables parsing of command-line generic arguments (tokens) into distinct constructs, where each word on the command line is a token.Allows for the configuration of a command line.Sequeira has lead an open source team of developers to create a new command-line parser that can accept command-line arguments and parse them into an API called System.CommandLine, which does three things: I wrote about this problem in a previous article (“How to Contribute to Microsoft Open Source Software Projects,” /magazine/mt830359), and described my work with Microsoft’s Jon Sequeira. Applications start execution from the Main method, but the arguments are passed in as an array (string args) with no differentiation between which items in the array are commands, options, arguments and the like. NET Framework 1.0, I’ve been astounded that there’s been no simple way for developers to parse the command line of their applications. Volume 34 Number 3 Parse the Command Line with System.CommandLine ![]()
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