b2 authorize_account [--dev | --staging | --production] [accountId] [applicationKey]

    Prompts for Backblaze accountID and applicationKey (unless they are given
    on the command line).

    The account ID is a 12-digit hex number that you can get from
    your account page on backblaze.com.

    The application key is a 40-digit hex number that you can get from
    your account page on backblaze.com.

    Stores an account auth token in ~/.b2_account_info.  This can be overridden using the
    B2_ACCOUNT_INFO environment variable.

b2 clear_account

    Erases everything in ~/.b2_account_info

b2 create_bucket <bucketName> <bucketType>

    Creates a new bucket.  Prints the ID of the bucket created.

b2 delete_bucket <bucketName>

    Deletes the bucket with the given name.

b2 delete_file_version <fileName> <fileId>

    Permanently and irrevocably deletes one version of a file.

b2 download_file_by_id <fileId> <localFileName>

    Downloads the given file, and stores it in the given local file.

b2 download_file_by_name <bucketName> <fileName> <localFileName>

    Downloads the given file, and stores it in the given local file.

b2 get_file_info <fileId>

    Prints all of the information about the file, but not its contents.

b2 hide_file <bucketName> <fileName>

    Uploads a new, hidden, version of the given file.

b2 list_buckets

    Lists all of the buckets in the current account.

b2 list_file_names <bucketName> [<startingName>] [<numberToShow>]

    Lists the names of the files in a bucket, starting at the
    given point.

b2 list_file_versions <bucketName> [<startingName>] [<startingFileId>] [<numberToShow>]

    Lists the names of the files in a bucket, starting at the
    given point.

b2 ls [--long] [--versions] <bucketName> [<folderName>]

    Using the file naming convention that "/" separates folder
    names from their contents, returns a list of the files
    and folders in a given folder.  If no folder name is given,
    lists all files at the top level.

    The --long option produces very wide multi-column output
    showing the upload date/time, file size, file id, whether it
    is an uploaded file or the hiding of a file, and the file
    name.  Folders don't really exist in B2, so folders are
    shown with "-" in each of the fields other than the name.

    The --version option shows all of versions of each file, not
    just the most recent.

b2 make_url <fileId>

    Prints an URL that can be used to download the given file, if
    it is public.

b2 sync [--delete] [--hide] <source> <destination>

    UNDER DEVELOPMENT -- there may be changes coming to this command

    Uploads or downloads multiple files from source to destination.
    One of the paths must be a local file path, and the other must be
    a B2 bucket path. Use "b2:<bucketName>/<prefix>" for B2 paths, e.g.
    "b2:my-bucket-name/a/path/prefix/".

    If the --delete or --hide flags are specified, destination files
    are deleted or hidden if not present in the source path. Note that
    files are matched only by name and size.

b2 update_bucket <bucketName> <bucketType>

    Updates the bucketType of an existing bucket.  Prints the ID
    of the bucket updated.

b2 upload_file [--sha1 <sha1sum>] [--contentType <contentType>] [--info <key>=<value>]* <bucketName> <localFilePath> <b2FileName>

    Uploads one file to the given bucket.  Uploads the contents
    of the local file, and assigns the given name to the B2 file.

    By default, upload_file will compute the sha1 checksum of the file
    to be uploaded.  But, you you already have it, you can provide it
    on the command line to save a little time.

    Content type is optional.  If not set, it will be set based on the
    file extension.

    If `tqdm` library is installed, progress bar is displayed on stderr.
    (use pip install tqdm to install it)

    Each fileInfo is of the form "a=b".

b2 version

    Echos the version number of this program.

 [ ! -z $BASH_COMPLETION_DIR ] && sudo cp contrib/b2 $BASH_COMPLETION_DIR