Introduction to command syntax

All OLP CLI commands have the following structure:

olp <command group> <command> <arguments> [required and/or optional parameters]

For example:

olp pipeline create pipeline-name --scope <YOUR_PROJECT_HRN>

Passing parameters to the OLP CLI

The OLP CLI supports a set of characters that you can use to pass command parameters:

  1. Space and equal (=) separators.

    By default, command parameters are separated with spaces, but you can also use the equal (=) separator, as in the examples below:

     olp catalog list --profile <your_profile_name>


     olp catalog list --profile=<your_profile_name>
  2. Tilde-prefix (~).

    If you are using the tilde-prefix (~) to denote a user's home directory in Linux environments, you must use a space as tilde cannot be combined with the = separator:

     olp catalog layer stream put hrn:here:data::org:catalog1 stream-layer1 --input ~/path/to/dir
  3. Pipe (|) and dash (-) characters.

    The pipe (|) character lets you take the output of one command and send it as input to another command. The dash (-) character allows capturing that output and passing it to a certain parameter of the other command.

    In the example below, the catalog show command returns the configuration of the hrn:here:data::org:catalog-1 catalog in JSON format. The catalog update command takes the hrn:here:data::org:catalog-1 configuration (through --config -) to update the configuration of the hrn:here:data::org:catalog-2 catalog, including catalog summary, name, description, and layer configuration:

     olp catalog show hrn:here:data::org:catalog-1 --json | olp catalog update hrn:here:data::org:catalog-2 --config -

Output format options

The OLP CLI's default output is optimized for human readability. Such exit codes are used:

  • 0: returned when a command succeeds.
  • 1: returned when a command was executed with invalid parameters.
  • 2: returned when invalid configuration files were used.
  • 3: returned when a command fails.
  • 4: returned when a command was executed on non-existing resources (mostly catalogs).

All commands provide a --quiet flag that allows reducing the output to essential values only with no additional information.

Commands that display output in the console support a --json flag. Depending on the command, this flag shows more additional information in the output in the JSON format. You can also parse JSON output with a script.

Alternatively, you can set the OLP_OUTPUT environment variable to json or quiet to choose the output format. However, the flags have a higher priority than the environment variable.

For example:

export OLP_OUTPUT=json
set OLP_OUTPUT=json

To disable a previously set output format, set OLP_OUTPUT to verbose, which is its default value.

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