Set world in Zwift prefs.

zwift_world.sh

#!/bin/bash
USER=`whoami`
DIR="/home/${USER}/Games/zwift/drive_c/users/daktak/Documents/Zwift"
case $1 in
  1 | Watopia )
  WORLD=2
  ;;

  2 | Richmond )
  WORLD=2
  ;;

  3 | London )
  WORLD=3
  ;;

  4 | "New York" | NY )
  WORLD=4
  ;;

  5 | Innsbruck )
  WORLD=5
  ;;

  7 | Yorkshire )
  WORLD=7
  ;;

  9 | "Makuri Island" | MI )
  WORLD=9
  ;;

  10 | France )
  WORLD=10
  ;;

  11 | Paris )
  WORLD=11
  ;;

esac
if [[ -z $WORLD ]]; then
  xmlstarlet ed --inplace -d //ZWIFT//WORLD \
    $DIR/prefs.xml
else
  xmlstarlet ed --inplace \
    --subnode ZWIFT --type elem --name "WORLD" --value $WORLD \
    $DIR/prefs.xml
fi