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How can I free memory on linux

my pc have 33 gig ram and about 32 gig of this ram is used (and i dont know what program is used 32 gig ram) i want to free all of the ram without any restarting . and when i execute free command i just get 4 process is working and this process is just for mine . what am i going to do ? Thanks in advance .

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32 GB RAM?! Why on earth do you need that much? – TheLQ Jul 9 '10 at 7:43
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migrated from stackoverflow.com Jul 8 '10 at 23:37

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closed as exact duplicate by Ignacio Vazquez-Abrams, Sathya, random Jul 9 '10 at 0:49

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1 Answer

Run:

top

ant that should be able to tell you.

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Thanks . can you explain for me what is the command , that kill all of my process ? . – Eva Feldman Jul 8 '10 at 23:28
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