Add script to sync garmin

scripts/garmin.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+set -o nounset
+
+gid=$(id -g)
+uid=$(id -u)
+
+DEV=/dev/disk/by-label/GARMIN
+MOUNTPOINT=/mnt
+MOUNTOPTS="uid=${uid},gid=${gid}"
+
+SYNC_FOLDERS=(
+    Activity
+)
+
+RSYNCOPTS=(
+    --verbose
+    --recursive
+    --checksum
+    --itemize-changes
+)
+
+if [[ ! -e "${DEV}" ]]; then
+    printf "no garmin device present\n" >&2
+    exit 1
+fi
+
+mnt=$(findmnt --noheadings --first-only --options "${MOUNTOPTS}" --output TARGET "${DEV}")
+
+if [[ -n "${mnt}" ]]; then
+    if [[ "${mnt}" == "${MOUNTPOINT}" ]]; then
+        printf '%s already correctly mounted\n' "${DEV}"
+    else
+        printf '%s already mounted somewhere else, aborting\n' "${DEV}" >&2
+        exit 1
+    fi
+else
+    if findmnt --mountpoint "${MOUNTPOINT}" >/dev/null; then
+        printf "%s already in use\n" "${MOUNTPOINT}" >&2
+        exit 1
+    else
+        sudo mount -o "${MOUNTOPTS}" "${DEV}" "${MOUNTPOINT}"
+    fi
+fi
+
+for folder in "${SYNC_FOLDERS[@]}"; do
+    rsync "${RSYNCOPTS[@]}" "${MOUNTPOINT}/GARMIN/${folder}/" "${HOME}/sync/garmin/${folder}/"
+done