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10 pages in this section.
Learn why Go excels for CLI tools, producing single-file binaries that start fast, cross-compile, and simplify distribution for DevOps teams.
Learn to build Go command-line tools with 10 examples. Explore the flag package for parsing arguments, including strings, booleans, and numbers.
Learn to use Go's flag package for parsing command-line options. Define flags, manage subcommands with FlagSet, and customize usage text.
Learn to build command-line tools with nested subcommands, persistent flags, and shell completion using Cobra or urfave/cli in Go.
Learn to use kingpin for advanced CLI UX, including typed flags, enums, and argument validation, for maintaining legacy tools.
Learn to configure Go CLIs and services using Viper. Centralize layered configurations from files, environment variables, and flags.
Learn to implement colorized output, user-friendly error messages, and exit codes in Go CLIs using fatih/color and os.Exit.
Learn best practices for Go CLI tools, covering testing, versioning, and distribution. Optimize UX, structure, and dependencies for robust binaries.
A single-page roundup of every highlight bullet from the 9 pages in the CLI Tools section, grouped by source page so you can scan all 41 takeaways without opening each article individually.