Merge pull request #6442 from Luap99/podman-autocomplete

Shell completion

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+% podman-completion(1)
+
+## NAME
+podman\-completion - Generate shell completion scripts
+
+## SYNOPSIS
+**podman completion** [*options*] *bash*|*zsh*|*fish*
+
+## DESCRIPTION
+The completion command allows you to generate shell completion scripts. Supported shells are **bash**, **zsh** and **fish**.
+
+These script are used by the shell to provide suggestions and complete commands when you are typing the command and press [TAB].
+
+Usually these scripts are automatically installed via the package manager.
+
+## OPTIONS
+#### **--file**, **-f**
+
+Write the generated output to file.
+
+#### **--no-desc**
+
+Do not provide description in the completions.
+
+## Installation
+
+### BASH
+Make sure you have `bash-completion` installed on your system.
+
+To load the completion script into your current session run:
+`source <(podman completion bash)`
+
+To make it available in all your bash sessions run:
+`podman completion bash -f /etc/bash_completion.d/podman`
+
+
+### ZSH
+If shell completion is not already enabled in your environment you will need to enable it. You can execute the following once:
+`echo "autoload -U compinit; compinit" >> ~/.zshrc`
+
+To make it available in all your zsh sessions run:
+`podman completion zsh -f "${fpath[1]}/_podman"`
+
+Once you reload the shell the autocompletion should be working.
+
+
+### FISH
+To load the completion script into your current session run:
+`podman completion fish | source`
+
+To make it available in all your fish sessions run:
+`podman completion fish -f ~/.config/fish/completions/podman.fish`
+
+
+## SEE ALSO
+[podman(1)](podman.1.md)