• Added "getnotification", "setnotification", and "delnotification" commands for notification policies (hrchu)
• Added support for AWS_STS_REGIONAL_ENDPOINTS (#1218, #1228) (Johan Lanzrein)
• Added ConnectionRefused [111] exit code to handle connection errors (Salar Nosrati-Ershad)
• Added support for IMDSv2. Should work automatically on ec2 (Anthony Foiani)
• Added --list-allow-unordered to list objects unordered. Only supported by Ceph based s3-compatible services (#1269) (Salar Nosrati-Ershad)
• Fixed --exclude dir behavior for python >= 3.6 (Daniil Tararukhin)
• Fixed Cloudfront invalidate retry issue (Yuan-Hsiang Lee)
• Fixed 0 byte cache files crashing s3cmd (#1234) (Carlos Laviola)
• Fixed --continue behavior for the "get" command (#1009) (Anton Ustyugov)
• Fixed unicode issue with fixbucket (#1259)
• Fixed CannotSendRequest and ConnectionRefusedError errors at startup (#1261)
• Fixed error reporting for object info when the object does not exist
• Fixed "setup.py test" to do nothing to avoid failure that could be problematic for distribution packaging (#996)
• Improved expire command to use Rule/Filter/Prefix for LifecycleConfiguration (#1247)
• Improved PASS/CHECK/INCLUDE/EXCLUDE debug log messages
• Improved setup.py with python 3.9 and 3.10 support info(Ori Avtalion)
• Many other bug fixes

• Added support for metadata modification of files bigger than 5 GiB
• Added support for remote copy of files bigger than 5 GiB using MultiPart copy (Damian Martinez, Florent Viard)
• Added progress info output for multipart copy and current-total info in output for cp, mv and modify
• Added support for all special/foreign character names in object names to cp/mv/modify
• Added support for SSL authentication (Aleksandr Chazov)
• Added the http error 429 to the list of retryable errors (#1096)
• Added support for listing and resuming of multipart uploads of more than 1000 parts (#346)
• Added time based expiration for idle pool connections in order to avoid random broken pipe errors (#1114)
• Added support for STS webidentity authentication (ie AssumeRole and AssumeRoleWithWebIdentity) (Samskeyti, Florent Viard)
• Added support for custom headers to the mb command (#1197) (Sébastien Vajda)
• Improved MultiPart copy to preserve acl and metadata of objects
• Improved the server errors catching and reporting for cp/mv/modify commands
• Improved resiliency against servers sending garbage responses (#1088, #1090, #1093)
• Improved remote copy to have consistent copy of metadata in all cases: multipart or not, aws or not
• Improved security by revoking public-write acl when private acl is set (#1151) (ruanzitao)
• Improved speed when running on an EC2 instance (#1117) (Patrick Allain)
• Reduced connection_max_age to 5s to avoid broken pipes as AWS closes https conns after around 6s (#1114)
• Ensure that KeyboardInterrupt are always properly raised (#1089)
• Changed sized of multipart copy chunks to 1 GiB
• Fixed ValueError when using more than one ":" inside add_header in config file (#1087)
• Fixed extra label issue when stdin used as source of a MultiPart upload
• Fixed remote copy to allow changing the mime-type (ie content-type) of the new object
• Fixed remote_copy to ensure that meta-s3cmd-attrs will be set based on the real source and not on the copy source
• Fixed deprecation warnings due to invalid escape sequences (Karthikeyan Singaravelan)
• Fixed getbucketinfo that was broken when the bucket lifecycle uses the filter element (Liu Lan)
• Fixed RestoreRequest XML namespace URL (#1203) (Akete)
• Fixed PARTIAL exit code that was not properly set when needed for object_get (#1190)
• Fixed a possible infinite loop when a file is truncated during hashsum or upload (#1125) (Matthew Krokosz, Florent Viard)
• Fixed report_exception wrong error when LANG env var was not set (#1113)
• Fixed wrong wiki url in error messages (Alec Barrett)
• Py3: Fixed an AttributeError when using the "files-from" option
• Py3: Fixed compatibility issues due to the removal of getchildren() from ElementTree in python 3.9 (#1146, #1157, #1162, # 1182, #1210) (Ondřej Budai)
• Py3: Fixed compatibility issues due to the removal of encodestring() in python 3.9 (#1161, #1174) (Kentaro Kaneki)
• Fixed a crash when the AWS_ACCESS_KEY env var is set but not AWS_SECRET_KEY (#1201)
• Cleanup of check_md5 (Riccardo Magliocchetti)
• Removed legacy code for dreamhost that should be necessary anymore
• Migrated CI tests to use github actions (Arnaud Jaffre)
• Improved README with a link to INSTALL.md (Sia Karamalegos)
• Improved help content (Dmitrii Korostelev, Roland Van Laar)
• Improvements for setup and build configurations
• Many other bug fixes

• Changed size reporting using k instead of K as it a multiple of 1024 (#956)
• Added "public_url_use_https" config to generate public url using https (#551, #666) (Jukka Nousiainen)
• Added option to make connection pooling configurable and improvements (Arto Jantunen)
• Added support for path-style bucket access to signurl (Zac Medico)
• Added docker configuration and help to run test cases with multiple Python versions (Doug Crozier)
• Relaxed limitation on special chars for --add-header key names (#1054)
• Fixed all regions that were automatically converted to lower case (Harshavardhana)
• Fixed size and alignment of DU and LS output reporting (#956)
• Fixes for SignatureDoesNotMatch error when host port 80 or 443 is specified, due to stupid servers (#1059)
• Fixed the useless retries of requests that fail because of ssl cert checks
• Fixed a possible crash when a file disappears during cache generation (#377)
• Fixed unicode issues with IAM (#987)
• Fixed unicode errors with bucked Policy/CORS requests (#847) (Alex Offshore)
• Fixed unicode issues when loading aws_credential_file (#989)
• Fixed an issue with the tenant feature of CephRGW. Url encode bucket_name for path-style requests (#1080)
• Fixed signature v2 always used when bucket_name had special chars (#1081)
• Allow to use signature v4 only, even for commands without buckets specified (#1082)
• Fixed small open file descriptor leaks.
• Py3: Fixed hash-bang in headers to not force using python2 when setup/s3cmd/run-test scripts are executed directly.
• Py3: Fixed unicode issues with Cloudfront (#1006)
• Py3: Fixed http.client.RemoteDisconnected errors (#1014) (Ryan Huddleston)
• Py3: Fixed 'dictionary changed size during iteration' error when using a cache-file (#945) (Doug Crozier)
• Py3: Fixed the display of file sizes (Vlad Presnyak)
• Py3: Python 3.8 compatibility fixes (Konstantin Shalygin)
• Py2: Fixed unicode errors sometimes crashing remote2remote sync (#847)
• Added s3cmd.egg-info to .gitignore (Philip Dubé)
• Improved run-test script to not use hard-coded bucket names(#1066) (Doug Crozier)
• Renamed INSTALL to INSTALL.md and improvements (Nitro, Prabhakar Gupta)
• Improved the restore command help (Hrchu)
• Updated the storage-class command help with the recent aws s3 classes (#1020)
• Fixed typo in the --continue-put help message (Pengyu Chen)
• Fixed typo (#1062) (Tim Gates)
• Improvements for setup and build configurations
• Many other bug fixes

• Fixed unexpected timeouts encountered during requests or transfers due to AWS strange connection short timeouts (#941)
• Fixed a throttle issue slowing down too much transfers in some cases (#913)
• Added support for $AWS_PROFILE (#966) (Taras Postument)
• Added clarification comment for the socket_timeout configuration value OS limit
• Avoid distutils usage at runtime (Matthias Klose)
• Python 2 compatibility: Fixed import error of which with fallback code (Gianfranco Costamagna)
• Fixed Python 3 bytes string encoding when getting IAM credentials (Alexander Allakhverdiyev)
• Fixed handling of config tri-state bool values (like acl_public) (Brian C. Lane)
• Fixed V2 signature when restore command is used (Jan Kasiak)
• Fixed setting full_control on objects with public read access (Matthew Vernon)
• Fixed a bug when only one path is supplied with Cloudfront. (Mikael Svensson)
• Fixed signature errors with 'modify' requests (Radek Simko)
• Fixed #936 - Fix setacl command exception (Robert Moucha)
• Fixed error reporting if deleting a source object failed after a move (#929)
• Many other bug fixes (#525, #933, #940, #947, #957, #958, #960, #967)

Important info: AWS S3 doesn't allow anymore uppercases and underscores in bucket names since march 1, 2018

• Support for Python 3 is now stable
• Fixed signature issues due to upper cases in hostname (#920)
• Improved support for Minio Azure gateway (Julien Maitrehenry, Harshavardhana)
• Added signurl_use_https option to use https prefix for signurl (Julien Recurt)
• Fixed a lot of remaining issues and regressions for Python 3 (#922, #921, #908)
• Fixed --configure option with Python 3
• Fixed non string cmdline parameters being ignored
• Windows support fixes (#922)
• Don't force anymore to have a / on last parameter for the "modify" command (#886)
• Removed the python3 support warning
• Detect and report error 403 in getpolicy for info command (#894)
• Added a specific error message when getting policy by non owner (#885)
• Many other bug fixes (#905, #892, #890, #888, #889, #887)

• Added support for Python 3 (Shaform, Florent Viard)
• Added getlifecycle command (Daniel Gryniewicz)
• Added --cf-inval for invalidating multiple CF distributions (Joe Mifsud)
• Added --limit to "ls" and "la" commands to return the specified number of objects (Masashi Ozawa)
• Added --token-refresh and --no-token-refresh and get the access token from the environment (Marco Jakob)
• Added --restore-priority and --restore-days for S3 Glacier (Robert Palmer)
• Fixed requester pays header with HEAD requests (Christian Rodriguez)
• Don't allow mv/cp of multiple files to single file (Guy Gur-Ari)
• Generalize wildcard certificate forgiveness (Mark Titorenko)
• Multiple fixes for SSL connections and proxies
• Added support for HTTP 100-CONTINUE
• Fixes for s3-like servers
• Big cleanup and many unicode fixes
• Many other bug fixes

• Added --host and --host-bucket
• Added --stats
• Fix for newer python 2.7.x SSL library updates
• Many other bug fixes

• Support signed URL content disposition type
• Added 'ls -l' long listing including storage class
• Added --limit-rate=RATE
• Added --server-side-encryption-kms-id=KEY_ID
• Added --storage-class=CLASS
• Added --requester-pays, [payer] command
• Added --[no-]check-hostname
• Added --stop-on-error, removed --ignore-failed-copy
• Added [setcors], [delcors] commands
• Added support for cn-north-1 region hostname checks
• Output strings may have changed. Scripts calling s3cmd expecting specific text may need to be updated.
• HTTPS is now the default
• Many unicode fixes
• Many other bug fixes

• Handle unvalidated SSL certificate. Necessary on Ubuntu 14.04 for SSL to function at all.
• packaging fixes (require python-magic, drop ez_setup)

s3cmd-1.5.1.2 - 2015-02-04

• fix PyPi install

s3cmd-1.5.1 - 2015-02-04

• Sort s3cmd ls output by bucket name (Andrew Gaul)
• Support relative expiry times in signurl. (Chris Lamb)
• Fixed issue with mixed path separators with s3cmd get --recursive on Windows. (Luke Winslow)
• fix S3 wildcard certificate checking
• Handle headers with spaces in their values properly (#460)
• Fix lack of SSL certificate checking libraries on older python
• set content-type header for stdin from command line or Config()
• fix uploads from stdin (#464)
• Fix directory exclusions (#467)
• fix signurl
• Don't retry in response to HTTP 405 error (#422)
• Don't crash when a proxy returns an invalid XML error document

s3cmd-1.5.0 - 2015-01-12

• add support for newer regions such as Frankfurt that require newer authorization signature v4 support (Vasileios Mitrousis, Michal Ludvig, Matt Domsch)
• drop support for python 2.4 due to signature v4 code. python 2.6 is now the minimum, and python 3 is still not supported.
• handle redirects to the "right" region for a bucket.
• add --ca-cert=FILE for self-signed certs (Matt Domsch)
• allow proxied SSL connections with python >= 2.7 (Damian Gerow)
• add --remove-headers for [modify] command (Matt Domsch)
• add -s/--ssl and --no-ssl options (Viktor Szakáts)
• add --signature-v2 for backwards compatibility with S3 clones.
• bugfixes by 17 contributors

s3cmd 1.5.0-rc1 - 2014-06-29

• add environment variable S3CMD_CONFIG (Devon Jones), access key and secre keys (Vasileios Mitrousis)
• added modify command (Francois Gaudin)
• better debug messages (Matt Domsch)
• faster batch deletes (Matt Domsch)
• Added support for restoring files from Glacier storage (Robert Palmer)
• Add and remove full lifecycle policies (Sam Rudge)
• Add support for object expiration (hrchu)
• bugfixes by 26 contributors

s3cmd 1.5.0-beta1 - 2013-12-02

• Brougt to you by Matt Domsch and contributors, thanks guys! :)
• Multipart upload improvements (Eugene Brevdo, UENISHI Kota)
• Allow --acl-grant on AWS groups (Dale Lovelace)
• Added Server-Side Encryption support (Kevin Daub)
• Improved MIME types detections and content encoding (radomir, Eric Drechsel, George Melika)
• Various smaller changes and bugfixes from many contributors

• Persistent HTTP/HTTPS connections for massive speedup (Michal Ludvig)
• New switch --quiet for suppressing all output (Siddarth Prakash)
• Honour "umask" on file downloads (Jason Dalton)
• Various bugfixes from many contributors

• IAM roles support (David Kohen, Eric Dowd)
• Manage bucket policies (Kota Uenishi)
• Various bugfixes from many contributors

• Server-side copy for hardlinks/softlinks to improve performance (Matt Domsch)
• New [signurl] command (Craig Ringer)
• Improved symlink-loop detection (Michal Ludvig)
• Add --delete-after option for sync (Matt Domsch)
• Handle empty return bodies when processing S3 errors. (Kelly McLaughlin)
• Upload from STDIN (Eric Connell)
• Updated bucket locations (Stefhen Hovland)
• Support custom HTTP headers (Brendan O'Connor, Karl Matthias)
• Improved MIME support (Karsten Sperling, Christopher Noyes)
• Added support for --acl-grant/--acl-revoke to 'sync' command (Michael Tyson)
• CloudFront: Support default index and default root invalidation (Josep del Rio)
• Command line options for access/secret keys (Matt Sweeney)
• Support [setpolicy] for setting bucket policies (Joe Fiorini)
• Respect the $TZ environment variable (James Brown)
• Reduce memory consumption for [s3cmd du] (Charlie Schluting)
• Rate limit progress updates (Steven Noonan)
• Download from S3 to a temp file first (Sumit Kumar)
• Reuse a single connection when doing a bucket list (Kelly McLaughlin)
• Delete empty files if object_get() failed (Oren Held)

s3cmd 1.1.0 - (never released)

• MultiPart upload enabled for both [put] and [sync]. Default chunk size is 15MB.
• CloudFront invalidation via [sync --cf-invalidate] and [cfinvalinfo].
• Increased socket_timeout from 10 secs to 5 mins.
• Added "Static WebSite" support [ws-create / ws-delete / ws-info] (contributed by Jens Braeuer)
• Force MIME type with --mime-type=abc/xyz, also --guess-mime-type is now on by default, -M is no longer shorthand for --guess-mime-type
• Allow parameters in MIME types, for example: --mime-type="text/plain; charset=utf-8"
• MIME type can be guessed by python-magic which is a lot better than relying on the extension. Contributed by Karsten Sperling.
• Support for environment variables as config values. For instance in ~/.s3cmd put "access_key=$S3_ACCESS_KEY". Contributed by Ori Bar.
• Support for --configure checking access to a specific bucket instead of listing all buckets. Listing buckets requires the S3 ListAllMyBuckets permission which is typically not available to delegated IAM accounts. With this change, s3cmd --configure accepts an (optional) bucket uri as a parameter and if it's provided, the access check will just verify access to this bucket individually. Contributed by Mike Repass.
• Allow STDOUT as a destination even for downloading multiple files. They will be output one after another without any delimiters! Contributed by Rob Wills.

s3cmd 1.0.0 - 2011-01-18

• [sync] now supports --no-check-md5
• Network connections now have 10s timeout
• [sync] now supports bucket-to-bucket synchronisation
• Added [accesslog] command.
• Added access logging for CloudFront distributions using [cfmodify --log]
• Added --acl-grant and --acl-revoke [Timothee Groleau]
• Allow s3:// URI as well as cf:// URI as a distribution name for most CloudFront related commands.
• Support for Reduced Redundancy Storage (--reduced-redundancy)
• Follow symlinks in [put] and [sync] with --follow-symlinks
• Support for CloudFront DefaultRootObject [Luke Andrew]