Convert GPX routes (rte) into tracks (trk) using gpsbabel (https://www.gpsbabel.org)

gpx-routes-to-tracks.sh

#!/usr/bin/env bash
#
# Convert GPX routes (rte) into tracks (trk) using gpsbabel.
# (https://www.gpsbabel.org/)

set -e

if ! type gpsbabel >/dev/null 2>&1; then
  echo 'gpsbabel not found'
  exit 1
fi

if [ $# -ne 2 ]
then
  echo "Usage: $(basename "$0") <input.gpx> <output.gpx>"
  exit 1
fi

gpsbabel -i gpx -f "$1" -x transform,trk=rte,del -o gpx -F "$2"