Command Line Tool for Backblaze B2
The command-line tool that gives easy access to all of the capabilities of B2 Cloud Storage.
This program provides command-line access to the B2 service.
This tool can be installed with:
pip install b2
If you see a message saying that the
six library cannot be installed, which
happens if you're installing with the system python on OS X El Capitan, try
pip install --ignore-installed b2
b2 authorize-account [<accountIdOrKeyId>] [<applicationKey>] b2 cancel-all-unfinished-large-files <bucketName> b2 cancel-large-file <fileId> b2 clear-account b2 create-bucket [--bucketInfo <json>] [--corsRules <json>] [--lifecycleRules <json>] <bucketName> [allPublic | allPrivate] b2 create-key [--duration <validDurationSeconds>] [--bucket <bucketName>] [--namePrefix <namePrefix>] <keyName> <capabilities> b2 delete-bucket <bucketName> b2 delete-file-version [<fileName>] <fileId> b2 delete-key <applicationKeyId> b2 download-file-by-id [--noProgress] <fileId> <localFileName> b2 download-file-by-name [--noProgress] <bucketName> <fileName> <localFileName> b2 get-account-info b2 get-bucket [--showSize] <bucketName> b2 get-download-auth [--prefix <fileNamePrefix>] [--duration <durationInSeconds>] <bucketName> b2 get-download-url-with-auth [--duration <durationInSeconds>] <bucketName> <fileName> b2 get-file-info <fileId> b2 help [commandName] b2 hide-file <bucketName> <fileName> b2 list-buckets b2 list-file-names <bucketName> [<startFileName>] [<maxToShow>] b2 list-file-versions <bucketName> [<startFileName>] [<startFileId>] [<maxToShow>] b2 list-keys b2 list-parts <largeFileId> b2 list-unfinished-large-files <bucketName> b2 ls [--long] [--versions] [--recursive] <bucketName> [<folderName>] b2 make-url <fileId> b2 sync [--delete] [--keepDays N] [--skipNewer] [--replaceNewer] \ [--compareVersions <option>] [--compareThreshold N] \ [--threads N] [--noProgress] [--dryRun ] [--allowEmptySource ] \ [--excludeRegex <regex> [--includeRegex <regex>]] \ [--excludeDirRegex <regex>] \ [--excludeAllSymlinks ] \ <source> <destination> b2 update-bucket [--bucketInfo <json>] [--corsRules <json>] [--lifecycleRules <json>] <bucketName> [allPublic | allPrivate] b2 upload-file [--sha1 <sha1sum>] [--contentType <contentType>] \ [--info <key>=<value>]* [--minPartSize N] \ [--noProgress] [--threads N] <bucketName> <localFilePath> <b2FileName> b2 version
The environment variable B2_ACCOUNT_INFO specifies the sqlite file to use for caching authentication information. The default file to use is: ~/.b2_account_info
For more details on one command: b2 help <command>
When authorizing with application keys, this tool requires that the key have the 'listBuckets' capability so that it can take the bucket names you provide on the command line and translate them into bucket IDs for the B2 Storage service. Each different command may required additional capabilities. You can find the details for each command in the help for that command.
Parallelism and the --threads parameter
Users with high performance networks, or file sets with very small files, may benefit from increased parallelism. Experiment with using the --threads parameter with small values to determine if there are benefits.
Note that using multiple threads will usually be detrimental to the other users on your network.
Verbose logs to stdout can be enabled with the
A hidden flag
--debugLogs can be used to enable logging to a
b2_cli.log file (with log rotation at midnight) in current working directory. Please take care to not launch the tool from the directory that you are syncing, or the logs will get synced to the remote server (unless that is really what you want to do).
For advanced users, a hidden option
--logConfig <filename.ini> can be used to enable logging in a user-defined format and verbosity. An example log configuration can be found here.
1.3.8 (December 6, 2018)
- Faster downloading of large files using multiple threads and bigger buffers.
- Fixed doc for cancel-all-unfinished-large-files
1.3.6 (August 21, 2018)
- Fix auto-reauthorize for application keys.
- Fix problem with bash auto-completion module.
- Fix (hopefully) markdown display in PyPI.
1.3.4 (August 10, 2018)
- Better documentation for authorize-account command.
- Fix error reporting when using application keys
- Fix auth issues with bucket-restricted application keys.
1.3.2 (July 28, 2018)
- Tests fixed for Python 3.7
- Add documentation about what capabilites are required for different commands.
- Better error messages for authorization problems with application keys.
1.3.0 (July 20, 2018)
- Support for application keys.
- Support for Python 3.6
- Drop support for Python 3.3 (
setuptoolsno longer supports 3.3)
- Fix content type so markdown displays properly in PyPI
- The testing package is called
- Faster and more complete integration tests
1.2.0 (July 6, 2018)
--recursiveoption for ls
--showSizeoption for get-bucket
--excludeDirRegexoption for sync
And some bug fixes:
- Include LICENSE file in the source tarball. Fixes #433
- Test suite now runs as root (fixes #427)
- Validate file names before trying to upload
- Fix scaling problems when syncing large numbers of files
- Prefix Windows paths during sync to handle long paths (fixes #265)
- Check if file to be synced is still accessible before syncing (fixes #397)
1.1.0 (November 30, 2017)
Just one change in this release:
- Add support for CORS rules in
get-bucketwill display CORS rules.
1.0.0 (November 9, 2017)
This is the same code as 0.7.4, with one incompatible change:
--allowEmptySourceto sync from empty directory, to help avoid accidental deletion of all files.
0.7.4 (November 9, 2017)
- More efficient uploads by sending SHA1 checksum at the end.
Includes a number of bug fixes:
- File modification times are set correctly when downloading.
- Fix an off-by-one issue when downloading a range of a file (affects library, but not CLI).
- Better handling of some errors from the B2 service.
We encourage outside contributors to perform changes on our codebase. Many such changes have been merged already. In order to make it easier to contribute, core developers of this project:
- provide guidance (through the issue reporting system)
- provide tool assisted code review (through the Pull Request system)
- maintain a set of integration tests (run with a production cloud)
- maintain a set of (well over a hundred) unit tests
- automatically run unit tests on 14 versions of python (including osx, Jython and pypy)
- format the code automatically using yapf
- use static code analysis to find subtle/potential issues with maintainability
- maintain other Continous Integration tools (coverage tracker)
You'll need to some Python packages installed. To get all the latest things:
pip install --upgrade --upgrade-strategy eager -r requirements.txt -r requirements-test.txt -r requirements-setup.txt
There is a
Makefile with a rule to run the unit tests using the currently active Python:
make setup make test
will install the required packages, then run the unit tests.
To test in multiple python virtual environments, set the enviroment variable
to be a space-separated list of their root directories. When set, the makefile will run the
unit tests in each of the environments.
Before checking in, use the
pre-commit.sh script to check code formatting, run
unit tests, run integration tests etc.
The integration tests need a file in your home directory called
that contains two lines with nothing on them but your account ID and application key:
We marked the places in the code which are significantly less intuitive than others in a special way. To find them occurrences, use
git grep '*magic*'.