This shell script will allow you to specify a directory on a remote system and then present you a list of files/folders allowing you to choose 1 and then copy it to the current directory using rclone. You must have rclone setup already to use this script.

getfile.sh

#!/usr/bin/env bash

# Function to list files and let user choose one to download
download_from_remote() {

    # Select a remote folder
    remote="remote:/path/to/folder/"

    # List files on the specified remote and path
    files_json=$(rclone lsjson "$remote")
    
    # Convert JSON to an array of file paths
    mapfile -t files < <(echo "$files_json" | jq -r '.[].Path')

    # Check if files are available
    if [ ${#files[@]} -eq 0 ]; then
        echo "No files found in the specified directory."
        return
    fi

    # Display files with an index
    for i in "${!files[@]}"; do
        echo "$((i+1)): ${files[$i]}"
    done

    # Ask the user to choose a file to download or quit
    echo "Enter the number of the file to download or 'q' to quit:"
    read -r selectedIndex

    # Handle quit request
    if [ "$selectedIndex" = "q" ]; then
        echo "Exiting script."
        exit 0
    fi

    # Validate selection
    if [[ "$selectedIndex" =~ ^[0-9]+$ ]] && [ "$selectedIndex" -le "${#files[@]}" ] && [ "$selectedIndex" -gt 0 ]; then
        selectedFile="${files[$((selectedIndex-1))]}"
        # Confirming the file to download
        if [ -n "$selectedFile" ]; then
            echo "Downloading '$selectedFile'..."
            rclone copy -P --sftp-chunk-size=32k  --sftp-concurrency=512 --exclude="*.part" "$remote/$selectedFile" .
            echo "Download complete!"
        else
            echo "Invalid selection. Please try again."
        fi
    else
        echo "Invalid input. Please enter a valid number or 'q' to quit."
    fi
}

# Main loop
while true; do
    download_from_remote
done