System Information
free
Displays information about the system's memory and swap usage.
Ubuntu
CentOS
Debian
Arch
SUSE
Slackware
Fedora
FreeBSD
NetBSD
OpenBSD
Verified: 2025-09-22
Syntax
$free [OPTIONEN]
Optionen
-h
Menschenlesbare Größen
-m
In Megabytes
-g
In Gigabytes
-s
Kontinuierliche Ausgabe alle N Sekunden
-t
Gesamtsumme anzeigen
Examples
$free
$free -h
$free -m
$free -g
$free -s 5
Typical use cases
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Standard usage
free --help
Note
Displays RAM and swap usage. Important for performance monitoring.
Export