flock:tldr:fa57d

The given command uses the flock utility to incorporate a file-based lock mechanism before executing a specific command. Here's a breakdown of the components:

• flock: It is a Linux utility used to manage file locks. It can be used to prevent concurrent access to a file or to synchronize execution of multiple scripts or processes.
• ${path-to-lock-lock}: This is a placeholder that should be replaced with the actual path to the lock file. The lock file is a regular file used by flock to acquire and release locks.
• --command: This flag is used to specify the command that will be executed after acquiring the lock.
• "${command}": Here, ${command} is another placeholder that should be replaced with the actual command that needs to be executed.

So, when this command is run, flock will try to acquire a lock on the specified lock file. If the lock is acquired successfully, it will then execute the specified command. The lock will be released automatically once the command finishes executing. If the lock is not available, flock will wait until it becomes available, and then execute the command.