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ipcrm:tldr:def4c
The command ipcrm --semaphore-id ${semaphore_id}
is used to remove or delete a specific semaphore in a UNIX/Linux system.
Here's a breakdown of the components of the command:
-
ipcrm
: It is a command-line utility used to remove or list System V InterProcess Communication (IPC) objects such as shared memory segments, message queues, and semaphores. -
--semaphore-id
: This option tells theipcrm
command that we want to remove a semaphore. A semaphore is an IPC object used for process synchronization and coordination. -
${semaphore_id}
: This is a variable that holds the specific identifier (also known as the semaphore ID) of the semaphore we want to remove. It is usually a numeric value that uniquely identifies a particular semaphore in the system.
By executing this command with the appropriate semaphore ID, the specified semaphore will be deleted, freeing the system resources associated with it.