The s3ql_oauth_client command


s3ql_oauth_client [options]


The s3ql_oauth_client command may be used to obtain OAuth2 authentication tokens for use with Google Storage. It requests a “user code” from Google which has to be pasted into the browser to complete the authentication process interactively. Once authentication in the browser has been completed, s3ql_oauth_client displays the OAuth2 refresh token.

When combined with the special username oauth2, the refresh token can be used as a backend passphrase when using the Google Storage S3QL backend.


The s3ql_oauth_client command accepts the following options:

--log <target>

Destination for log messages. Specify none for standard output or syslog for the system logging daemon. Anything else will be interpreted as a file name. Log files will be rotated when they reach 1 MiB, and at most 5 old log files will be kept. Default: None

--debug-modules <modules>

Activate debugging output from specified modules (use commas to separate multiple modules, ‘all’ for everything). Debug messages will be written to the target specified by the --log option.


Activate debugging output from all S3QL modules. Debug messages will be written to the target specified by the --log option.


be really quiet


just print program version and exit

Exit Codes

s3ql_oauth_client may terminate with the following exit codes:


Everything went well.


An unexpected error occurred. This may indicate a bug in the program.


Invalid command line argument or configuration file key.

See Also

The S3QL homepage is at

The full S3QL documentation should also be installed somewhere on your system, common locations are /usr/share/doc/s3ql or /usr/local/doc/s3ql.