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Linux · Linux and Bash

lsof — Run with timestamp

Print a timestamp immediately before running the command. Base task: List processes using a network port.

Copy-ready commandlsof — Run with timestamp
date --iso-8601=seconds; sudo lsof -i :443

Requirements and permissions

Requirements
Linux with the referenced utility installed
Permissions
Use sudo or root only when required
Last reviewed
2026-08-01

Examples

Run with timestamp

Print a timestamp immediately before running the command.

date --iso-8601=seconds; sudo lsof -i :443

Common errors

Command or option not supported

Confirm the installed platform version supports the base command and the added output or wrapper option.

Access denied or insufficient privileges

Run with the administrative role or delegated permission required by the underlying command.