Red Hat ENTERPRISE LINUX 5 - DEPLOYMENT Deployment Manual page 554

Chapter 38. Gathering System Information
Swap: 1310712
The command free -m shows the same information in megabytes, which are easier to read.
total
Mem: 630
-/+ buffers/cache:
Swap: 1279
If you prefer a graphical interface for free, you can use the GNOME System Monitor. To start it from
the desktop, go to System > Administration > System Monitor or type gnome-system-monitor at
a shell prompt (such as an XTerm). Click on the Resources tab.
528
0 1310712
used free shared
536 93
145 485
0 1279
buffers cached
0 172 219