Command line options - Amazon Command Line Interface
How to use command line optionsAmazon CLI supported global command line optionsCommon uses of command line options
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

This documentation is for Version 1 of the Amazon CLI only. For documentation related to Version 2 of the Amazon CLI, see the Version 2 User Guide.

Command line options

In the Amazon CLI, command line options are global parameters you can use to override the default configuration settings, any corresponding profile setting, or environment variable setting for that single command. You can't use command line options to directly specify credentials, although you can specify which profile to use.

How to use command line options

Most command line options are simple strings, such as the profile name profile1 in the following example:

$ aws s3 ls --profile profile1
example-bucket-1
example-bucket-2
...

Each option that takes an argument requires a space or equals sign (=) separating the argument from the option name. If the argument value is a string that contains a space, you must use quotation marks around the argument. For details on argument types and formatting for parameters, see Specify parameter values for the Amazon CLI.

Amazon CLI supported global command line options

In the Amazon CLI you can use the following command line options to override the default configuration settings, any corresponding profile setting, or environment variable setting for that single command.

--ca-bundle <string>

Specifies the certificate authority (CA) certificate bundle to use when verifying SSL certificates.

If defined, this option overrides the value for the profile setting ca_bundle and the AWS_CA_BUNDLE environment variable.

--cli-connect-timeout <integer>

Specifies the maximum socket connect time in seconds. If the value is set to zero (0), the socket connect waits indefinitely (is blocking) and doesn't timeout.

--cli-read-timeout <integer>

Specifies the maximum socket read time in seconds. If the value is set to zero (0) the socket read waits indefinitely (is blocking) and doesn't timeout.

--color <string>

Specifies support for color output. Valid values are on, off, and auto. The default value is auto.

--debug

A Boolean switch that enables debug logging. The Amazon CLI by default provides cleaned up information regarding any successes or failures regarding command outcomes in the command output. The --debug option provides the full Python logs. This includes additional stderr diagnostic information about the operation of the command that can be useful when troubleshooting why a command provides unexpected results. To easily view debug logs, we suggest sending the logs to a file to more easily search the information. You can do this by using one of the following.

To send only the stderr diagnostic information, append 2> debug.txt where debug.txt is the name you want to use for your debug file:

$ aws servicename commandname options --debug 2> debug.txt

To send both the output and stderr diagnostic information, append &> debug.txt where debug.txt is the name you want to use for your debug file:

$ aws servicename commandname options --debug &> debug.txt
--endpoint-url <string>

Specifies the URL to send the request to. For most commands, the Amazon CLI automatically determines the URL based on the selected service and the specified Amazon Region. However, some commands require that you specify an account-specific URL. You can also configure some Amazon services to host an endpoint directly within your private VPC, which might then need to be specified.

The following command example uses a custom Amazon S3 endpoint URL.

$ aws s3 ls --endpoint-url http://localhost:4567

Endpoint configuration settings are located in multiple places, such as the system or user environment variables, local Amazon configuration files, or explicitly declared on the command line as a parameter. The Amazon CLI endpoint configuration settings take precedence in the following order:

  1. The --endpoint-url command line option.

  2. If enabled, the AWS_IGNORE_CONFIGURED_ENDPOINT_URLS global endpoint environment variable or profile setting ignore_configure_endpoint_urls to ignore custom endpoints.

  3. The value provided by a service-specific environment variable AWS_ENDPOINT_URL_<SERVICE>, such as AWS_ENDPOINT_URL_DYNAMODB.

  4. The values provided by the AWS_USE_DUALSTACK_ENDPOINT, AWS_USE_FIPS_ENDPOINT, and AWS_ENDPOINT_URL environment variables.

  5. The service-specific endpoint value provided by the endpoint_url setting within a services section of the shared config file.

  6. The value provided by the endpoint_url setting within a profile of the shared config file.

  7. use_dualstack_endpoint, use_fips_endpoint, and endpoint_url settings.

  8. Any default endpoint URL for the respective Amazon Web Service is used last. For a list of the standard service endpoints available in each Region, see Amazon Regions and Endpoints in the Amazon Web Services General Reference.

--no-paginate

A Boolean switch that disables the multiple calls the automatically Amazon CLI makes to receive all command results that creates pagination of the output. This means only the first page of your output is displayed.

--no-sign-request

A Boolean switch that disables signing the HTTP requests to the Amazon service endpoint. This prevents credentials from being loaded.

--no-verify-ssl

By default, the Amazon CLI uses SSL when communicating with Amazon services. For each SSL connection and call, the Amazon CLI verifies the SSL certificates. Using this option overrides the default behavior of verifying SSL certificates.

Warning

This option is not best practice. If you use --no-verify-ssl, your traffic between your client and Amazon services is no longer secured. This means your traffic is a security risk and vulnerable to man-in-the-middle exploits. If you're having issues with certificates, it's best to resolve those issues instead. For certificate troubleshooting steps, see SSL certificate errors.

--output <string>

Specifies the output format to use for this command. You can specify any of the following values:

  • json – The output is formatted as a JSON string.

  • text – The output is formatted as multiple lines of tab-separated string values. This can be useful to pass the output to a text processor, like grep, sed, or awk.

  • table – The output is formatted as a table using the characters +|- to form the cell borders. It typically presents the information in a "human-friendly" format that is much easier to read than the others, but not as programmatically useful.

--profile <string>

Specifies the named profile to use for this command. To set up additional named profiles, you can use the aws configure command with the --profile option.

$ aws configure --profile <profilename>
--query <string>

Specifies a JMESPath query to use in filtering the response data. For more information, see Filter Amazon CLI output.

--region <string>

Specifies which Amazon Region to send this command's Amazon request to. For a list of all of the Regions that you can specify, see Amazon Regions and Endpoints in the Amazon Web Services General Reference.

--version

A Boolean switch that displays the current version of the Amazon CLI program that is running.

Common uses of command line options

Common uses for command line options include checking your resources in multiple Amazon Regions, and changing the output format for legibility or ease of use when scripting. In the following examples, we run the describe-instances command against each Region until we find which Region our instance is in. 

$ aws ec2 describe-instances --output table --region us-west-1
-------------------
|DescribeInstances|
+-----------------+
$ aws ec2 describe-instances --output table --region us-west-2
------------------------------------------------------------------------------
|                              DescribeInstances                             |
+----------------------------------------------------------------------------+
||                               Reservations                               ||
|+-------------------------------------+------------------------------------+|
||  OwnerId                            |  012345678901                      ||
||  ReservationId                      |  r-abcdefgh                        ||
|+-------------------------------------+------------------------------------+|
|||                                Instances                               |||
||+------------------------+-----------------------------------------------+||
|||  AmiLaunchIndex        |  0                                            |||
|||  Architecture          |  x86_64                                       |||
...