---
title: "Set Object ACL"
slug: "set-object-acl-s3cmd-tg"
updated: 2026-10-27T17:23:14Z
published: 2026-10-27T17:23:14Z
canonical: "docs.vastdata.com/set-object-acl-s3cmd-tg"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vastdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Set Object ACL

Before setting ACL permissions, we recommend you read [Managing S3 Access Control Lists (ACLs)](/docs-5-3/docs/en/managing-s3-access-control-lists-acls-tg).

```plaintext
s3cmd [-c CONFIGFILE] setacl s3://BUCKET/OBJECT [--acl-grant=PERMISSION:{USER_VAST_ID|GROUP}] [--acl-revoke=PERMISSION:{USER_VAST_ID|GROUP}]
```

| CONFIGFILE | Configuration file. Defaults to $HOME/.s3cfg |
| --- | --- |
| BUCKET | Name of bucket |
| OBJECT | Name of object |
| --acl-grant | Grant stated permission for stated user or group. |
| --acl-revoke | Revoke stated permission for stated user or group |
| PERMISSION | Type of permission to grant: - read - write - read_acp - write_acp - full_control - all |
| USER | A user to which you want to grant the permission. Can be specified as: . - A principal name in the format *user@domain*, where *user* is the user name and *domain* is configured for an external auth provider on the cluster (LDAP, NIS). > [!NOTE] > Note > > Users on the local provider cannot be specified this way. - A VID, which is a VAST ID used in the cluster's internal user database. |
| GROUP | A group to which you want to grant the permission. The group can be specified as follows: - Set the type to *GroupLoginName* and specify the group in the format *group@domain*, where *group* is the group name and *domain* is configured for an external auth provider on the cluster (such as LDAP). > [!NOTE] > Notice > > Specifying a group by GroupLoginName is supported starting with VAST Cluster 5.3.3. - Specify the group's VID, which is the VAST ID used in the cluster's internal user database. If you want to grant permissions to an S3 predefined group, specify one of the following: - `http://acs.amazonaws.com/groups/global/AllUsers`, or - `http://acs.amazonaws.com/groups/global/AuthenticatedUsers` |

## Example

Grant write permission to object *myfile.asp* in bucket *mybucket* to the user whose VID is 6:

```plaintext
$ s3cmd -c vast.s3cfg setacl s3://mybucket/myfile.asp --acl-grant=write:6
```

Grant read permission to object *myfile.asp* in bucket *mybucket* to group *mygroup@domain.com*:

```plaintext
$ s3cmd -c vast.s3cfg setacl s3://mybucket/myfile.asp --acl-grant=read:'groupLoginName=mygroup@domain.com'
```