Cobra
Cobra is a Go library and framework for building command-line applications with commands, subcommands, flags, help, and shell completion.
Build and Orchestrator in Go (From Scratch)
Cobra is a Go library and framework for building command-line applications with commands, arguments, flags, and handlers.
- How it is used
- Organizes an orchestrator into independently runnable worker, manager, and task-management commands.
- How deep it goes
- Explains generated command structure, help fields, flag scopes, registration, and Run handlers, then implements a worker command.
- Examples
- Demonstrates cobra-cli initialization, a root command, a worker skeleton, help output, host and port flags, and worker startup.
- What you can do after
- Build it from scratch by scaffolding Cobra commands, defining flags, registering children, and implementing Run handlers.
Read how Build and Orchestrator in Go (From Scratch) explains Cobra →
Go in Practice, Second Edition
Cobra is a Go library for building command-line applications with commands, subcommands, flags, help, and shell completion.
- How it is used
- Builds console applications that need commands, flags, help, subcommands, and shell autocompletion.
- How deep it goes
- Demonstrates command construction, flag configuration, value retrieval, and multi-command structure without detailing Cobra internals.
- Examples
- Uses a Hello World CLI with name and language flags and a calculator with arithmetic subcommands.
- What you can do after
- Builds Go command-line applications with structured commands, flags, generated help, and subcommands.
Related concepts
- command-line interfaceuses · A command-line interface is a text-based interface through which users or programs interact with software or a computer by entering commands and receiving output.
- command-line toolused by · A command-line tool is a software program operated through textual commands, options, or arguments in a command-line interface.
- cobra-cliproduces · cobra-cli is a command-line tool for generating and managing applications built with the Cobra Go command-line framework.
- commandhas part · A command is an instruction or request representing an operation for a system or component to interpret, handle, or execute.
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