perprocess network usage

In the world of Linux system administration and monitoring, understanding the network usage of individual processes is crucial for performance tuning, security checks, and diagnostics. Although Linux provides a variety of tools for network monitoring, combining the capabilities of /proc/$PID/fd and ss offers a specific and powerful method to get per-process network usage details. A1: The /proc filesystem is a special filesystem in UNIX-like operating systems that presents information about processes and other system information in a hierarchical file-like structure. It is a virtual filesystem that doesn't exist on disk. Instead, it is dynamically created by the Linux kernel.