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lsof

Utility to list open files

uncategorizedRed Team
Official docs ↗Download ↗Source repo ↗

Platforms: Linux · Last verified September 6, 2026

Lsof is a Unix-specific diagnostic tool. Its name stands for LiSt Open Files, and it does just that. It lists information about any files that are open, by processes currently running on the system.

Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.

Getting started

See the official Kali tool page and upstream homepage linked above for installation and usage details.

Commonly preinstalled on

Kali Linux

Debian-based distribution built for penetration testing and security auditing