cbt:tldr:3ba9f

This command is written in the style of the command-line tool called cbt (Cloud Bigtable). It is used to interact with Google Cloud Bigtable, a fully managed, NoSQL database service by Google.

Explanation of the command:

• cbt read: This is the command to read data from a Bigtable table.
• ${table_name}: This is a placeholder for the name of the Bigtable table from which you want to read data. The actual table name needs to be provided in place of ${table_name}.
• start=${start_row_key}: This parameter specifies the start row key from where you want to read data. The actual start row key value needs to be provided in place of ${start_row_key}.
• end=${end_row_key}: This parameter specifies the end row key until where you want to read data. The actual end row key value needs to be provided in place of ${end_row_key}.
• keys-only=true: This parameter specifies that only the row keys should be returned in the result, rather than the actual row data. It is set to true in this command.

Once all the required values are provided and the command is executed, it will read the row keys within the specified range from the specified Bigtable table, returning only the row keys.