opensnoop:tldr:51b41

The command "sudo opensnoop" is used to monitor and show details about file and directory operations that are being performed on a system. Specifically, it provides real-time information about the files being opened, closed, read from, or written to by various processes running on the system.

By adding "sudo" at the beginning of the command, it runs with administrative privileges, granting the user root access. This is necessary because "opensnoop" requires elevated privileges to intercept and monitor all file activity on the system.

When the command is executed, it continuously displays a list of file events, including the process ID (PID) of the process performing the action, the process name, the file descriptor, the file path, and the type of file activity (open, read, write, close, etc.). This helps users and administrators understand which processes are accessing specific files and can be useful for troubleshooting or monitoring purposes.