ipcrm:tldr:2a82f

The command "ipcrm --queue-key ${ipc_queue_key}" is used to remove an IPC (Inter-Process Communication) message queue identified by a given queue key.

Here's a breakdown of the command:

• "ipcrm" is the utility command used to remove (free) IPC resources.
• "--queue-key" is an option used with ipcrm to indicate the type of IPC resource being removed, which in this case is a message queue.
• "${ipc_queue_key}" is a placeholder variable that represents the specific queue key value. This value is substituted with an actual numeric queue key when the command is executed.

When you run this command, it removes the IPC message queue associated with the provided queue key, freeing up system resources that were allocated for inter-process communication. This allows other processes to use the message queue key if needed.