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17.4.7. Using the System Monitor Tool

The File Systems tab of the System Monitor tool allows you to view file systems and disk space usage in the graphical user interface.
To start the System Monitor tool, either select ApplicationsSystem ToolsSystem Monitor from the Activities menu, or type gnome-system-monitor at a shell prompt. Then click the File Systems tab to view a list of file systems.
System Monitor — File Systems
The File Systems tab of the System Monitor application.
Figure 17.4. System Monitor — File Systems

For each listed file system, the System Monitor tool displays the source device (Device), target mount point (Directory), and file system type (Type), as well as its size (Total) and how much space is free (Free), available (Available), and used (Used).