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How do I find out how much ram my computer has? I am running Ubuntu 13.04.

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Note for many solutions it will only tell you how RAM the OS can 'see' (e.g. 32bit without PAE can only see 4GB) –  Wilf May 16 at 21:16

3 Answers 3

up vote 12 down vote accepted

If you click on the gear icon (top right of your screen) then click on About this computer. The RAM is the 2nd entry down, below the computer name.

Edit

if you run sudo lshw -class memory in your terminal, this gives you the details of all available memory.

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That will tell you how much RAM the OS can see. –  david6 Jun 1 '13 at 1:00

Also easy to use commands to check RAM:

free -lm

Using top command itself or:

top | grep -i mem

Similar to top but a bit more advanced is htop but the package has to be installed sudo apt-get install htop then run:

htop

Will output memory scale in terminal.

Also vmstat can do this:

vmstat -s -SM
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Open a terminal: CtrlAltT)

Type: sudo lshw

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