dotfiles/bin/personal/vcsh/dotfiles-openjck-setup-bootstrap at main · openjck/dotfiles · GitHub

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#!/usr/bin/env bash

# Use Bash's unofficial "strict mode."
#
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -o errexit
set -o nounset
set -o pipefail
IFS=$'\n\t'

# This script is **intentionally** not executable by default.
#
# This script should never need to be run _after_ setup is complete. Rather, it
# should be downloaded from the Git host, marked as executable, and run to
# _perform_ the setup.

# This is a copy of the __distro_base function, which is used elsewhere as a
# utility, as of 2026-04-20.
#
# https://github.com/openjck/dotfiles/blob/0b619659e922d624125d16975285d3e7f3688839/.config/sh/init/utils/__distro_base.sh
get_distro_base() {
  # https://unix.stackexchange.com/a/46086/410447
  if [[ -f /etc/alpine-release ]]; then
    echo "alpine"
  elif [[ -f /etc/arch-release ]]; then
    echo "arch"
  elif [[ -f /etc/debian_version ]]; then
    echo "debian"
  elif [[ -f /etc/gentoo-release ]]; then
    echo "gentoo"
  elif [[ -f /etc/redhat-release ]]; then
    echo "redhat"
  elif [[ -f /etc/SuSE-release ]]; then
    echo "suse"
  else
    echo "__UNKNOWN__"
  fi
}

# This is a copy of the get_os_id function, which is used elsewhere as a
# utility, as of 2026-04-24.
#
# https://github.com/openjck/dotfiles/blob/3016d31b3e33329b7e024c9ca710c8953ba205ff/.config/sh/init/utils/__get_os_id.sh
get_os_id() {
  if [ -e /etc/os-release ]; then
    . /etc/os-release
  elif [ -e /usr/lib/os-release ]; then
    . /usr/lib/os-release
  fi

  if [ -n "$ID" ]; then
    echo "$ID"
  else
    echo "__UNKNOWN__"
  fi
}

DISTRO_BASE=$(get_distro_base)
DISTRO=$(get_os_id)

SUPPORTED=false

if [[ $DISTRO_BASE == debian ]]; then
  SUPPORTED=true
elif [[ $DISTRO == fedora ]]; then
  SUPPORTED=true
fi

if [[ $SUPPORTED == false ]]; then
  echo >&2 'FATAL ERROR: This distro is not supported.'
  exit 1
fi

# In addition to checking if the user has (some form of) sudo access, this
# prompts the user for their password once, now, at the beginning of this
# process, so that they don't need to be prompted for it in the middle of this
# process.
if ! sudo --validate; then
  echo >&2 "FATAL ERROR: \"sudo\" must be installed and enabled for \"$USER\"."
  exit 1
fi

if ! command -v vcsh >/dev/null; then
  # We need to test for Fedora specifically because some distributions related
  # to RedHat, including RedHat Enterprise Linux (RHEL) itself, have fewer
  # packages available to them.
  #
  # I don't know if vcsh is available on RHEL, but it is available on Fedora.
  if [[ $DISTRO_BASE == debian ]]; then
    sudo apt-get install --assume-yes vcsh
  elif [[ $DISTRO == fedora ]]; then
    sudo dnf install --assumeyes vcsh
  fi
fi

# https://stackoverflow.com/a/32708121/715866
while true; do
  read -rp 'Use SSH or HTTPS to clone dotfiles (S/H)? ' PROTOCOL
  case $PROTOCOL in
    [Ss])
      REMOTE='git@github.com:openjck/dotfiles.git'
      break
      ;;
    [Hh])
      REMOTE='https://github.com/openjck/dotfiles.git'
      break
      ;;
    *) echo 'Please choose SSH (S) or HTTPS (H).' ;;
  esac
done

# In the past, I attempted to run "clone" and "pull" in this script instead of
# the following commands. That led to all sorts of problems, though. This
# approach should be more reliable. It does overwrite any existing file with
# the same name as a version-controlled file, but that's fine with me.
vcsh clone "$REMOTE" dotfiles-openjck --quiet --bare
vcsh dotfiles-openjck reset --hard origin/main