Shell completions

You can use command completion command to create bash|fish|zsh|powershell completion file

alex@vosjod:~$ alpine completion
2023/01/05 23:59:48 missing shell
alex@vosjod:~$ alpine completion --help
Generate shell autocompletions. Valid arguments are bash, fish, zsh, and powershell.

Usage:
  alpine completion [bash|fish|zsh|powershell]

Flags:
  -h, --help   help for completion
alex@vosjod:~$ alpine completion bash
# bash completion V2 for alpine                               -*- shell-script -*-

__alpine_debug()
{
    if [[ -n ${BASH_COMP_DEBUG_FILE:-} ]]; then
        echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
    fi
}

# Macs have bash3 for which the bash-completion package doesn't include
# _init_completion. This is a minimal version of that function.
__alpine_init_completion()
{
    COMPREPLY=()
    _get_comp_words_by_ref "$@" cur prev words cword
}

[...]

Install

Create completion file (bash, fish, zsh, or powershell) and put on your path, for example using bash:

alex@vosjod:~$ alpine completion bash > /usr/local/etc/bash_completion.d/alpine
alex@vosjod:~$ source /usr/local/etc/bash_completion.d/alpine
alex@vosjod:~$

For zsh, the completion file should be named _alpine and stored somewhere in the $FPATH.

Examples

alex@vosjod:~$ alpine [tab] [tab]
delete   (Delete an instance.)
edit     (Edit instance configuration using Vim.)
exec     (execute COMMAND over ssh.)
help     (Help about any command)
import   (Imports an instance.)
info     (Display information about instances.)
launch   (Launch an Alpine instance.)
list     (List all available instances.)
publish  (Publish an instance.)
ssh      (Attach an interactive shell to an instance.)
start    (Start an instance.)
stop     (Stop an instance.)
alex@vosjod:~$ alpine ssh [tab] [tab]
flat-fight      ignorant-punch
alex@vosjod:~$ alpine ssh flat-fight
2023/01/05 20:30:49 dial tcp [::1]:23: connect: connection refused

alex@vosjod:~$ alpine launch [tab] [tab]
alex@vosjod:~$ alpine launch -[tab] [tab]
--arch    (Machine architecture. Defaults to host cpu architecture.)
--cpu     (Number of CPUs to allocate.)
--disk    (Disk space to allocate. Positive integers, in bytes, or with K, M, G suffix.)
--image   (Image to be launched.)
--memory  (Amount of memory to allocate. Positive integers, in kilobytes.)
--mount   (Path to host directory to be exposed on guest.)
--name    (Name for the instance)
--port    (Forward instance ports to host. Multiple ports can be separated by `,`.)
--ssh     (Forward instance SSH port to host.)
-a        (Machine architecture. Defaults to host cpu architecture.)
-c        (Number of CPUs to allocate.)
-d        (Disk space to allocate. Positive integers, in bytes, or with K, M, G suffix.)
-i        (Image to be launched.)
-m        (Amount of memory to allocate. Positive integers, in kilobytes.)
-n        (Name for the instance)
-p        (Forward instance ports to host. Multiple ports can be separated by `,`.)
-s        (Forward instance SSH port to host.)
alex@vosjod:~$ alpine launch -a aarch64 --[tab] [tab]
--cpu     (Number of CPUs to allocate.)
--disk    (Disk space to allocate. Positive integers, in bytes, or with K, M, G suffix.)
--image   (Image to be launched.)
--memory  (Amount of memory to allocate. Positive integers, in kilobytes.)
--mount   (Path to host directory to be exposed on guest.)
--name    (Name for the instance)
--port    (Forward instance ports to host. Multiple ports can be separated by `,`.)
--ssh     (Forward instance SSH port to host.)