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s3cmd - Man Page

tool for managing Amazon S3 storage space and Amazon CloudFront content delivery network

Examples (TL;DR)


s3cmd [Options] COMMAND [PARAMETERS]


s3cmd is a command line client for copying files to/from Amazon S3 (Simple Storage Service) and performing other related tasks, for instance creating and removing buckets, listing objects, etc.


s3cmd can do several actions specified by the following commands.

s3cmd mb s3://BUCKET

Make bucket

s3cmd rb s3://BUCKET

Remove bucket

s3cmd ls [s3://BUCKET[/PREFIX]]

List objects or buckets

s3cmd la

List all object in all buckets

s3cmd put FILE [FILE...] s3://BUCKET[/PREFIX]

Put file into bucket


Get file from bucket

s3cmd del s3://BUCKET/OBJECT

Delete file from bucket

s3cmd rm s3://BUCKET/OBJECT

Delete file from bucket (alias for del)

s3cmd restore s3://BUCKET/OBJECT

Restore file from Glacier storage


Synchronize a directory tree to S3 (checks files freshness using size and md5 checksum, unless overridden by options, see below)

s3cmd du [s3://BUCKET[/PREFIX]]

Disk usage by buckets

s3cmd info s3://BUCKET[/OBJECT]

Get various information about Buckets or Files

s3cmd cp s3://BUCKET1/OBJECT1 s3://BUCKET2[/OBJECT2]

Copy object

s3cmd modify s3://BUCKET1/OBJECT

Modify object metadata

s3cmd mv s3://BUCKET1/OBJECT1 s3://BUCKET2[/OBJECT2]

Move object

s3cmd setacl s3://BUCKET[/OBJECT]

Modify Access control list for Bucket or Files

s3cmd setversioning s3://BUCKET enable|disable

Modify Bucket Versioning

s3cmd setownership s3://BUCKET BucketOwnerPreferred|BucketOwnerEnforced|ObjectWriter

Modify Bucket Object Ownership

s3cmd setblockpublicaccess s3://BUCKET BlockPublicAcls,IgnorePublicAcls,BlockPublicPolicy,RestrictPublicBuckets

Modify Block Public Access rules

s3cmd setobjectlegalhold STATUS s3://BUCKET/OBJECT

Modify Object Legal Hold

s3cmd setobjectretention MODE RETAIN_UNTIL_DATE s3://BUCKET/OBJECT

Modify Object Retention

s3cmd setpolicy FILE s3://BUCKET

Modify Bucket Policy

s3cmd delpolicy s3://BUCKET

Delete Bucket Policy

s3cmd setcors FILE s3://BUCKET

Modify Bucket CORS

s3cmd delcors s3://BUCKET

Delete Bucket CORS

s3cmd payer s3://BUCKET

Modify Bucket Requester Pays policy

s3cmd multipart s3://BUCKET [Id]

Show multipart uploads

s3cmd abortmp s3://BUCKET/OBJECT Id

Abort a multipart upload

s3cmd listmp s3://BUCKET/OBJECT Id

List parts of a multipart upload

s3cmd accesslog s3://BUCKET

Enable/disable bucket access logging

s3cmd sign STRING-TO-SIGN

Sign arbitrary string using the secret key

s3cmd signurl s3://BUCKET/OBJECT <expiry_epoch|+expiry_offset>

Sign an S3 URL to provide limited public access with expiry

s3cmd fixbucket s3://BUCKET[/PREFIX]

Fix invalid file names in a bucket

s3cmd settagging s3://BUCKET[/OBJECT] "KEY=VALUE[&KEY=VALUE ...]"

Modify tagging for Bucket or Files

s3cmd gettagging s3://BUCKET[/OBJECT]

Get tagging for Bucket or Files

s3cmd deltagging s3://BUCKET[/OBJECT]

Delete tagging for Bucket or Files

s3cmd expire s3://BUCKET

Set or delete expiration rule for the bucket

s3cmd setlifecycle FILE s3://BUCKET

Upload a lifecycle policy for the bucket

s3cmd getlifecycle s3://BUCKET

Get a lifecycle policy for the bucket

s3cmd dellifecycle s3://BUCKET

Remove a lifecycle policy for the bucket

s3cmd setnotification FILE s3://BUCKET

Upload a notification policy for the bucket

s3cmd getnotification s3://BUCKET

Get a notification policy for the bucket

s3cmd delnotification s3://BUCKET

Remove a notification policy for the bucket

Commands for static WebSites configuration

s3cmd ws-create s3://BUCKET

Create Website from bucket

s3cmd ws-delete s3://BUCKET

Delete Website

s3cmd ws-info s3://BUCKET

Info about Website

Commands for CloudFront management

s3cmd cflist

List CloudFront distribution points

s3cmd cfinfo [cf://DIST_ID]

Display CloudFront distribution point parameters

s3cmd cfcreate s3://BUCKET

Create CloudFront distribution point

s3cmd cfdelete cf://DIST_ID

Delete CloudFront distribution point

s3cmd cfmodify cf://DIST_ID

Change CloudFront distribution point parameters

s3cmd cfinval s3://BUCKET/OBJECT [s3://BUCKET/OBJECT ...]

Invalidate CloudFront objects

s3cmd cfinvalinfo cf://DIST_ID[/INVAL_ID]

Display CloudFront invalidation request(s) status


Some of the below specified options can have their default values set in s3cmd config file (by default $HOME/.s3cmd). As it's a simple text file feel free to open it with your favorite text editor and do any changes you like.

-h,  --help

show this help message and exit


Invoke interactive (re)configuration tool. Optionally use as '--configure s3://some-bucket' to test access to a specific bucket instead of attempting to list them all.

-c FILE, --config=FILE

Config file name. Defaults to $HOME/.s3cfg


Dump current configuration after parsing config files and command line options and exit.


AWS Access Key


AWS Secret Key


AWS Access Token

-n,  --dry-run

Only show what should be uploaded or downloaded but don't actually do it. May still perform S3 requests to get bucket listings and other information though (only for file transfer commands)

-s,  --ssl

Use HTTPS connection when communicating with S3. (default)


Don't use HTTPS.

-e,  --encrypt

Encrypt files before uploading to S3.


Don't encrypt files.

-f,  --force

Force overwrite and other dangerous operations.


Continue getting a partially downloaded file (only for [get] command).


Continue uploading partially uploaded files or multipart upload parts.  Restarts parts/files that don't have matching size and md5.  Skips files/parts that do.  Note: md5sum checks are not always sufficient to check (part) file equality.  Enable this at your own risk.


UploadId for Multipart Upload, in case you want continue an existing upload (equivalent to --continue- put) and there are multiple partial uploads.  Use s3cmd multipart [URI] to see what UploadIds are associated with the given URI.


Skip over files that exist at the destination (only for [get] and [sync] commands).

-r,  --recursive

Recursive upload, download or removal.


Check MD5 sums when comparing files for [sync]. (default)


Do not check MD5 sums when comparing files for [sync]. Only size will be compared. May significantly speed up transfer but may also miss some changed files.

-P,  --acl-public

Store objects with ACL allowing read for anyone.


Store objects with default ACL allowing access for you only.


Grant stated permission to a given amazon user. Permission is one of: read, write, read_acp, write_acp, full_control, all


Revoke stated permission for a given amazon user. Permission is one of: read, write, read_acp, write_acp, full_control, all

-D NUM, --restore-days=NUM

Number of days to keep restored file available (only for 'restore' command). Default is 1 day.


Priority for restoring files from S3 Glacier (only for expedited


Delete destination objects with no corresponding source file [sync]


Don't delete destination objects [sync]


Perform deletes AFTER new uploads when delete-removed is enabled [sync]


*OBSOLETE* Put all updated files into place at end [sync]


Do not delete more than NUM files. [del] and [sync]


Limit number of objects returned in the response body (only for [ls] and [la] commands)


Additional destination for parallel uploads, in addition to last arg.  May be repeated.


Delete remote objects after fetching to local file (only for [get] and [sync] commands).

-p,  --preserve

Preserve filesystem attributes (mode, ownership, timestamps). Default for [sync] command.


Don't store FS attributes


Preserve all local directories as remote objects including empty directories. Experimental feature.


Filenames and paths matching GLOB will be excluded from sync


Read --exclude GLOBs from FILE


Filenames and paths matching REGEXP (regular expression) will be excluded from sync


Read --rexclude REGEXPs from FILE


Filenames and paths matching GLOB will be included even if previously excluded by one of --(r)exclude(-from) patterns


Read --include GLOBs from FILE


Same as --include but uses REGEXP (regular expression) instead of GLOB


Read --rinclude REGEXPs from FILE


Read list of source-file names from FILE. Use - to read from stdin.

--region=REGION, --bucket-location=REGION

Region to create bucket in. As of now the regions are: us-east-1, us-west-1, us-west-2, eu-west-1, eu- central-1, ap-northeast-1, ap-southeast-1, ap- southeast-2, sa-east-1


HOSTNAME:PORT for S3 endpoint (default: s3.amazonaws.com, alternatives such as s3-eu- west-1.amazonaws.com). You should also set --host- bucket.


DNS-style bucket+hostname:port template for accessing a bucket (default: %(bucket)s.s3.amazonaws.com)

--reduced-redundancy,  --rr

Store object with 'Reduced redundancy'. Lower per-GB price. [put, cp, mv]

--no-reduced-redundancy,  --no-rr

Store object without 'Reduced redundancy'. Higher per- GB price. [put, cp, mv]




Target prefix for access logs (S3 URI) (for [cfmodify] and [accesslog] commands)


Disable access logging (for [cfmodify] and [accesslog] commands)


Default MIME-type for stored objects. Application default is binary/octet-stream.

-M,  --guess-mime-type

Guess MIME-type of files by their extension or mime magic. Fall back to default MIME-Type as specified by --default-mime-type option


Don't guess MIME-type and use the default type instead.


Don't use mime magic when guessing MIME-type.

-m MIME/TYPE, --mime-type=MIME/TYPE

Force MIME-type. Override both --default-mime-type and --guess-mime-type.


Add a given HTTP header to the upload request. Can be used multiple times. For instance set 'Expires' or 'Cache-Control' headers (or both) using this option.


Remove a given HTTP header.  Can be used multiple times.  For instance, remove 'Expires' or 'Cache- Control' headers (or both) using this option. [modify]


Specifies that server-side encryption will be used when putting objects. [put, sync, cp, modify]


Specifies the key id used for server-side encryption with AWS KMS-Managed Keys (SSE-KMS) when putting objects. [put, sync, cp, modify]


Override autodetected terminal and filesystem encoding (character set). Autodetected: UTF-8


Add encoding to these comma delimited extensions i.e. (css,js,html) when uploading to S3 )


Use the S3 name as given on the command line. No pre- processing, encoding, etc. Use with caution!


Disable multipart upload on files bigger than --multipart-chunk-size-mb


Size of each chunk of a multipart upload. Files bigger than SIZE are automatically uploaded as multithreaded- multipart, smaller files are uploaded using the traditional method. SIZE is in Mega-Bytes, default chunk size is 15MB, minimum allowed chunk size is 5MB, maximum is 5GB.


Include MD5 sums in bucket listings (only for 'ls' command).


Not an AWS standard. Allow the listing results to be returned in unsorted order. This may be faster when listing very large buckets.

-H,  --human-readable-sizes

Print sizes in human readable form (eg 1kB instead of 1234).


Name of index-document (only for [ws-create] command)


Name of error-document (only for [ws-create] command)


Indicates when the expiration rule takes effect. (only for [expire] command)


Indicates the number of days after object creation the expiration rule takes effect. (only for [expire] command)


Identifying one or more objects with the prefix to which the expiration rule applies. (only for [expire] command)


Skips validation of Amazon SQS, Amazon SNS, and AWS Lambda destinations when applying notification configuration. (only for [setnotification] command)


Display progress meter (default on TTY).


Don't display progress meter (default on non-TTY).


Give some file-transfer stats.


Enable given CloudFront distribution (only for [cfmodify] command)


Disable given CloudFront distribution (only for [cfmodify] command)


Invalidate the uploaded filed in CloudFront. Also see [cfinval] command.


When using Custom Origin and S3 static website, invalidate the default index file.


When using Custom Origin and S3 static website, don't invalidate the path to the default index file.


Add given CNAME to a CloudFront distribution (only for [cfcreate] and [cfmodify] commands)


Remove given CNAME from a CloudFront distribution (only for [cfmodify] command)


Set COMMENT for a given CloudFront distribution (only for [cfcreate] and [cfmodify] commands)


Set the default root object to return when no object is specified in the URL. Use a relative path, i.e. default/index.html instead of /default/index.html or s3://bucket/default/index.html (only for [cfcreate] and [cfmodify] commands)

-v,  --verbose

Enable verbose output.

-d,  --debug

Enable debug output.


Show s3cmd version (2.4.0) and exit.

-F,  --follow-symlinks

Follow symbolic links as if they are regular files


Cache FILE containing local source MD5 values

-q,  --quiet

Silence output on stdout


Path to SSL CA certificate FILE (instead of system default)


Path to client own SSL certificate CRT_FILE


Path to client own SSL certificate private key KEY_FILE


Check SSL certificate validity


Do not check SSL certificate validity


Check SSL certificate hostname validity


Do not check SSL certificate hostname validity


Use AWS Signature version 2 instead of newer signature methods. Helpful for S3-like systems that don't have AWS Signature v4 yet.


Limit the upload or download speed to amount bytes per second.  Amount may be expressed in bytes, kilobytes with the k suffix, or megabytes with the m suffix


Disable connection reuse


Set the REQUESTER PAYS flag for operations

-l,  --long-listing

Produce long listing [ls]


stop if error in transfer


Maximum number of times to retry a failed request before giving up. Default is 5


Provide a Content-Disposition for signed URLs, e.g., "inline; filename=myvideo.mp4"


Provide a Content-Type for signed URLs, e.g., "video/mp4"


One of the most powerful commands of s3cmd is s3cmd sync used for synchronising complete directory trees to or from remote S3 storage. To some extent s3cmd put and s3cmd get share a similar behaviour with sync.

Basic usage common in backup scenarios is as simple as:

	s3cmd sync /local/path/ s3://test-bucket/backup/

This command will find all files under /local/path directory and copy them to corresponding paths under s3://test-bucket/backup on the remote side. For example:

	/local/path/file1.ext         ->  s3://bucket/backup/file1.ext
	/local/path/dir123/file2.bin  ->  s3://bucket/backup/dir123/file2.bin

However if the local path doesn't end with a slash the last directory's name is used on the remote side as well. Compare these with the previous example:

	s3cmd sync /local/path s3://test-bucket/backup/

will sync:

	/local/path/file1.ext         ->  s3://bucket/backup/path/file1.ext
	/local/path/dir123/file2.bin  ->  s3://bucket/backup/path/dir123/file2.bin

To retrieve the files back from S3 use inverted syntax:

	s3cmd sync s3://test-bucket/backup/ ~/restore/

that will download files:

	s3://bucket/backup/file1.ext         ->  ~/restore/file1.ext
	s3://bucket/backup/dir123/file2.bin  ->  ~/restore/dir123/file2.bin

Without the trailing slash on source the behaviour is similar to what has been demonstrated with upload:

	s3cmd sync s3://test-bucket/backup ~/restore/

will download the files as:

	s3://bucket/backup/file1.ext         ->  ~/restore/backup/file1.ext
	s3://bucket/backup/dir123/file2.bin  ->  ~/restore/backup/dir123/file2.bin

All source file names, the bold ones above, are matched against exclude rules and those that match are then re-checked against include rules to see whether they should be excluded or kept in the source list.

For the purpose of --exclude and --include matching only the bold file names above are used. For instance only path/file1.ext is tested against the patterns, not /local/path/file1.ext

Both --exclude and --include work with shell-style wildcards (a.k.a. GLOB). For a greater flexibility s3cmd provides Regular-expression versions of the two exclude options named --rexclude and --rinclude. The options with ...-from suffix (eg --rinclude-from) expect a filename as an argument. Each line of such a file is treated as one pattern.

There is only one set of patterns built from all --(r)exclude(-from) options and similarly for include variant. Any file excluded with eg --exclude can be put back with a pattern found in --rinclude-from list.

Run s3cmd with --dry-run to verify that your rules work as expected. Use together with --debug get detailed information about matching file names against exclude and include rules.

For example to exclude all files with ".jpg" extension except those beginning with a number use:

--exclude '*.jpg' --rinclude '[0-9].*.jpg'

To exclude all files except "*.jpg" extension, use:

--exclude '*' --include '*.jpg'

To exclude local directory 'somedir', be sure to use a trailing forward slash, as such:

--exclude 'somedir/'

See Also

For the most up to date list of options run: s3cmd --help
For more info about usage, examples and other related info visit project homepage at: https://s3tools.org


Written by Michal Ludvig, Florent Viard and contributors

Contact, Support

Preferred way to get support is our mailing list:
or visit the project homepage:

Reporting Bugs

Report bugs to s3tools-bugs@lists.sourceforge.net


This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.