In MongoDB, sh.addShard is a command used to add a shard to a sharded cluster. Sharding is the process of dividing data across multiple machines to improve performance and scalability. By adding more shards, you can distribute the data and workload across multiple servers, allowing for better utilization of resources.

In a Linux environment, the process of using sh.addShard is similar to other operating systems. However, there may be slight differences in the command syntax or file paths. It is important to ensure that you have MongoDB installed and properly configured on your Linux system before using sh.addShard.

Examples: To use sh.addShard in MongoDB on Linux, follow these steps:

1. Start the MongoDB shell by opening a terminal and running the following command:

   mongo

2. Connect to the MongoDB instance that is running as a config server by running the following command:

   use config

3. Run the sh.addShard command with the appropriate parameters. The syntax for sh.addShard is as follows:

   sh.addShard("<shardConnectionString>")

   Replace <shardConnectionString> with the connection string for the shard you want to add. For example:

   sh.addShard("shard1.example.com:27017")

4. Verify that the shard has been added successfully by running the following command:

   sh.status()

   This command will display the status of the sharded cluster, including the newly added shard.