Master lsof: Inspect Open Files, Sockets, and Recover Deleted Data on Linux

This guide explains how to use the lsof command on Linux to list open files, filter by process, directory, user, or network criteria, combine options, view UNIX domain sockets, count open files, and even recover accidentally deleted files using file descriptors.

Linuxfile-descriptorslsof

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Master lsof: Inspect Open Files, Sockets, and Recover Deleted Data on Linux

Liangxu Linux

Mar 21, 2021 · Operations

Mastering netstat: Essential Commands to Inspect Linux Network Connections

This guide explains the most useful netstat options for Linux, showing how to list all connections, filter TCP or UDP sockets, disable DNS lookups, display process IDs, monitor listening ports, continuously refresh output, and use grep or awk to map ports to processes and summarize socket states.

LinuxNetwork MonitoringSysadmin

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Mastering netstat: Essential Commands to Inspect Linux Network Connections

Liangxu Linux

Jan 18, 2020 · Operations

Mastering lsof: Install, Filter, and Decode Open File Descriptors on Linux

This guide explains how to install the lsof utility on Linux, interpret its output, filter results with grep or process IDs, handle permission limitations, and use options like +c, -i, -n, and -P to display full process names and network connections.

file-descriptorslsofnetwork sockets

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Mastering lsof: Install, Filter, and Decode Open File Descriptors on Linux