NAME
    gcloud storage buckets add-iam-policy-binding - add an IAM policy binding
        to a bucket

SYNOPSIS
    gcloud storage buckets add-iam-policy-binding URL --member=PRINCIPAL
        --role=ROLE
        [--condition=[KEY=VALUE,...] | --condition-from-file=PATH_TO_FILE]
        [GCLOUD_WIDE_FLAG ...]

DESCRIPTION
    Add an IAM policy binding to a bucket. For more information, see Cloud
    Identity and Access Management
    (https://cloud.google.com/storage/docs/access-control/iam).

EXAMPLES
    To grant a single role to a single principal for BUCKET:

        $ gcloud storage buckets add-iam-policy-binding gs://BUCKET \
            --member=user:john.doe@example.com \
            --role=roles/storage.objectCreator

    To make objects in BUCKET publicly readable:

        $ gcloud storage buckets add-iam-policy-binding gs://BUCKET \
            --member=allUsers --role=roles/storage.objectViewer

    To specify a custom role for a principal on BUCKET:

        $ gcloud storage buckets add-iam-policy-binding gs://BUCKET \
            --member=user:john.doe@example.com --role=roles/customRoleName

POSITIONAL ARGUMENTS
     URL
        URL of bucket to add IAM policy binding to.

REQUIRED FLAGS
     --member=PRINCIPAL
        The principal to add the binding for. Should be of the form
        user|group|serviceAccount:email or domain:domain.

        Examples: user:test-user@gmail.com, group:admins@example.com,
        serviceAccount:test123@example.domain.com, or
        domain:example.domain.com.

        Some resources also accept the following special values:
        ◆ allUsers - Special identifier that represents anyone who is on the
          internet, with or without a Google account.
        ◆ allAuthenticatedUsers - Special identifier that represents anyone
          who is authenticated with a Google account or a service account.

     --role=ROLE
        Role name to assign to the principal. The role name is the complete
        path of a predefined role, such as roles/logging.viewer, or the role ID
        for a custom role, such as
        organizations/{ORGANIZATION_ID}/roles/logging.viewer.

OPTIONAL FLAGS
     At most one of these can be specified:

       --condition=[KEY=VALUE,...]
          A condition to include in the binding. When the condition is
          explicitly specified as None (--condition=None), a binding without a
          condition is added. When the condition is specified and is not None,
          --role cannot be a basic role. Basic roles are roles/editor,
          roles/owner, and roles/viewer. For more on conditions, refer to the
          conditions overview guide:
          https://cloud.google.com/iam/docs/conditions-overview

          When using the --condition flag, include the following key-value
          pairs:

           expression
              (Required) Condition expression that evaluates to True or False.
              This uses a subset of Common Expression Language syntax.

              If the condition expression includes a comma, use a different
              delimiter to separate the key-value pairs. Specify the delimiter
              before listing the key-value pairs. For example, to specify a
              colon (:) as the delimiter, do the following:
              --condition=^:^title=TITLE:expression=EXPRESSION. For more
              information, see
              https://cloud.google.com/sdk/gcloud/reference/topic/escaping.

           title
              (Required) A short string describing the purpose of the
              expression.

           description
              (Optional) Additional description for the expression.

       --condition-from-file=PATH_TO_FILE
          Path to a local JSON or YAML file that defines the condition. To see
          available fields, see the help for --condition. Use a full or
          relative path to a local file containing the value of condition.

GCLOUD WIDE FLAGS
    These flags are available to all commands: --access-token-file, --account,
    --billing-project, --configuration, --flags-file, --flatten, --format,
    --help, --impersonate-service-account, --log-http, --project, --quiet,
    --trace-token, --user-output-enabled, --verbosity.

    Run $ gcloud help for details.

NOTES
    This variant is also available:

        $ gcloud alpha storage buckets add-iam-policy-binding

