adduser.sh

#!/usr/bin/env bash
#
# adduser.sh
#
#   usage: curl -fsSL $URL | bash -s -- <github-user-name> [<user-name>]
#
set -eux -o pipefail

main() {
  local github="$1"
  local name="${2:-$github}"

  cat <<EOF | sudo bash -sx
  export LC_ALL=C
  adduser "$name" --gecos "" --disabled-password
  passwd -d "$name"
  umask 077
  mkdir "/home/$name/.ssh"
  echo "# https://github.com/$github.keys" >> "/home/$name/.ssh/authorized_keys"
  curl "https://github.com/$github.keys" >> "/home/$name/.ssh/authorized_keys"
  chown -R "$name:$name" "/home/$name/.ssh"
  usermod -aG sudo "$name"
  usermod -aG docker "$name"
EOF
}

main "$@"

useradd.sh

#!/usr/bin/env bash
#
# adduser.sh
#
#   usage: curl -fsSL $URL | bash -s -- <github-user-name> [<user-name>]
#
set -eux -o pipefail

main() {
  local github="$1"
  local name="${2:-$github}"

  cat <<EOF | sudo bash -sx
  export LC_ALL=C
  useradd -c "$github" "$name"
  passwd -d "$name"
  umask 077
  mkdir "/home/$name/.ssh"
  echo "# https://github.com/$github.keys" >> "/home/$name/.ssh/authorized_keys"
  curl "https://github.com/$github.keys" >> "/home/$name/.ssh/authorized_keys"
  chown -R "$name:$name" "/home/$name/.ssh"
  usermod -aG sudo "$name"
  usermod -aG docker "$name"
EOF
}

main "$@"

usage

adduser

curl -fsSL https://gist.githubusercontent.com/takumakei/f39a8f2daf15482fbb381f38aeba1c5c/raw/d78663cfcdf6c04a01f5ce0a69a49cab68594ef1/adduser.sh | bash -s -- $github [$name]

useradd

curl -fsSL https://gist.githubusercontent.com/takumakei/f39a8f2daf15482fbb381f38aeba1c5c/raw/d78663cfcdf6c04a01f5ce0a69a49cab68594ef1/useradd.sh | bash -s -- $github [$name]