This guide explains how to use common Linux commands such as netstat, ss, lsof, fuser, and nmap to list listening ports, interpret their output fields, and pinpoint which processes are occupying specific ports on a server.
This guide explains how to use Linux commands such as netstat, ss, lsof, fuser, and nmap to list open ports, interpret their output fields, and pinpoint the processes that are occupying particular ports on a server.
This guide explains how to use Linux commands such as netstat, ss, lsof, fuser, and nmap to inspect port usage, interpret their output fields, and install missing tools, enabling you to pinpoint which processes are occupying specific ports.
This guide explains why NFS mounts can appear busy, how to identify the blocking processes with lsof and fuser, and step‑by‑step commands to safely kill those processes or perform a lazy unmount, ensuring the filesystem is cleanly detached.
This guide explains why NFS mounts can become "device busy", shows how to locate the processes holding the mount with lsof and fuser, demonstrates safe termination of those processes, and covers both regular and lazy unmount techniques to reliably release the filesystem.
This guide explains how to shrink the /home partition, install missing fuser, resize the filesystem, and expand the root directory on a CentOS/RHEL 7 log server, including commands for unmounting, killing processes, resizing ext4 or xfs partitions, and re‑mounting the filesystem.
