FreeBSD bash command not found handler

command-not-found.sh

# /etc/profile.d/command-not-found.sh

[ "$BASH" ] || return 0

command_not_found_handle() {
  if [[ "$1" = */* ]]; then
    local cmd="${1#/}$"
  else
    local cmd="usr/local/s?bin/$1$"
  fi
  [[ -e /var/db/pkg/provides/provides.db && -e /usr/local/sbin/pkg ]] || {
    [[ -x /usr/local/sbin/pkg ]] || {
      echo >&2 'Installing pkg...'
      ASSUME_ALWAYS_YES=TRUE pkg &>/dev/null
    }
    pkg info pkg-provides &>/dev/null || {
      echo >&2 'Installing pkg-provides...'
      pkg install -y pkg-provides &>/dev/null
      local line='PKG_PLUGINS_DIR = "/usr/local/lib/pkg/";'
      grep -qxF "$line" /usr/local/etc/pkg.conf || cat >>/usr/local/etc/pkg.conf <<PKG_CONF
$line
PKG_ENABLE_PLUGINS = true;
PLUGINS [ provides ];
PKG_CONF
    }
    echo >&2 'Updating pkg-provides db...'
    pkg provides -u &>/dev/null
  }
  echo >&2
  echo >&2 "Of FreeBSD port(s) providing \`$1\`, run ONE of the following to install it:"
  echo >&2
  pkg provides "$cmd" | \
    sed -E -e '/^Name[^:]*: /!d' \
    -e 's/^Name[^:]*: //' \
    -e 's/-[0-9][0-9a-zA-Z%#!^,@._-]+[0-9a-zA-Z]$//' \
    -e 's/^/    pkg install /' >&2
  echo >&2
  return 1
}