I've tried /proc/meminfo but my permission has been denied.

closed as unclear what you're asking by G-Man, Anthon, X Tian, steve, don_crissti Oct 14 '15 at 20:55

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  • Can you please add the output of ls -l /proc/meminfo to your question? – Marco Oct 14 '15 at 15:44
  • 4
    You need to provide more information when asking questions. Assuming you mean Linux, you can run the 'free' command to see the total memory. – teppic Oct 14 '15 at 15:45

You need to use cat /proc/meminfo, not execute /proc/meminfo directly.

The reason you get "permission denied" is because you're trying to execute /proc/meminfo, and /proc/meminfo has no executable bit set (because it's not an executable, it's a file that you have to read).

Reading /proc/meminfo itself should not require any special permissions.

You might find it easier to find the total memory using the free command, though.

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