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end a process,
kill a process,
change the priority of a selected process, and
edit the [application]*System Monitor* preferences, such as the refresh interval for the list of processes, or what information to show.
You can also end a process by selecting it from the list and clicking the btn:[End Process] button.
Viewing Memory Usage
indexterm:[system information,memory usage]indexterm:[memory usage]indexterm:[RAM]
Using the free Command
indexterm:[free] The [command]#free# command allows you to display the amount of free and used memory on the system. To do so, type the following at a shell prompt:
The [command]#free# command provides information about both the physical memory (`Mem`) and swap space (`Swap`). It displays the total amount of memory (`total`), as well as the amount of memory that is in use (`used`), free (`free`), shared (`shared`), in kernel buffers (`buffers`), and cached (`cached`). For example:
~]$ free
total used free shared buffers cached
Mem: 761956 607500 154456 0 37404 156176
-/+ buffers/cache: 413920 348036
Swap: 1540092 84408 1455684
By default, [command]#free# displays the values in kilobytes. To display the values in megabytes, supply the [option]`-m` command line option:
[command]#free# [option]`-m`
For instance:
~]$ free -m
total used free shared buffers cached
Mem: 744 593 150 0 36 152
-/+ buffers/cache: 404 339
Swap: 1503 82 1421
For a complete list of available command line options, refer to the *free*(1) manual page.
indexterm:[gnome-system-monitor]indexterm:[System Monitor] The `Resources` tab of the [application]*System Monitor* tool allows you to view the amount of free and used memory on the system.
To start the [application]*System Monitor* tool, either select menu:Applications[System Tools > `System Monitor`pass:attributes[{blank}]] from the Activities menu, or type [command]#gnome-system-monitor# at a shell prompt. Then click the `Resources` tab to view the system's memory usage.
System Monitor — Resources