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Linux · Linux and Bash

tail — Measure execution time

Measure the command execution time. Base task: Follow new lines appended to a log.

Copy-ready commandtail — Measure execution time
time tail -f /var/log/syslog

Requirements and permissions

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

Examples

Measure execution time

Measure the command execution time.

time tail -f /var/log/syslog

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.