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#!/usr/bin/env bash
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
MOUNT_STATE_FILE="${PROJECT_DIR}/.sd-mount"
if [ ! -f "$MOUNT_STATE_FILE" ]; then
echo "No SD card mount recorded. Nothing to unmount."
exit 0
fi
SD_MOUNT="$(cat "$MOUNT_STATE_FILE")"
if mountpoint -q "$SD_MOUNT" 2>/dev/null; then
echo "Unmounting $SD_MOUNT ..."
sudo umount "$SD_MOUNT"
echo "Unmounted. Safe to remove the SD card."
else
echo "$SD_MOUNT is not currently mounted."
fi
rm -f "$MOUNT_STATE_FILE"
echo "Cleaned up mount state."
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