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Cobra
Library for building powerful CLI applications in Go — used by kubectl, Hugo, GitHub CLI, and most major Go tools.
Cobra provides a POSIX-compliant flag system, nested subcommands, shell autocompletion for bash/zsh/fish/PowerShell, and automatic help generation. The cobra-cli generator scaffolds new commands. It pairs with Viper for configuration management — the combination powers kubectl, Hugo, and the GitHub CLI.
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clicommandsflagsshell-completiongodevtools