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Hi, I want to know how to find out wheather Linux is 32 bit or 64 bit os? Regards, Manoj...
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  1. #1
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    Question linux 32 bit or 64 bit


    Hi,

    I want to know how to find out wheather Linux is 32 bit or 64 bit os?

    Regards,

    Manoj

  2. #2
    Administrator MikeTbob's Avatar
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    Usually when you download a 64 bit ISO, it will have a name with 64 in the title, like this
    http://ubuntu.univ-nantes.fr/ubuntu-...ktop-amd64.iso
    I do not respond to private messages asking for Linux help, Please keep it on the forums only.
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  3. #3
    Linux Enthusiast L4Linux's Avatar
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    Open a terminal and type:
    Code:
    uname -a
    Mine shows:
    Linux ubuntu 2.6.27-11-generic #1 SMP Thu Jan 29 19:24:39 UTC 2009 i686 GNU/Linux
    This i686 means it is 32bit. 386, 586 and 686 all mean 32bit.
    If yours is 64bit, it will say so in the output of uname -a.

  4. #4
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    If you have the kernel sources and your machine supports the 64-bit
    architecture and your current kernel is 32-bit you can rebuild it so as
    it is 64-bit
    In the config file, you can see it
    # zcat /proc/config.gz > ~/config
    # less config

    you should see lines like
    # CONFIG_64BIT is not set
    CONFIG_x86_32=y
    # CONFIG_x86_64 is not set

    you can change it by first reconfiguring it:
    cd /usr/src/linux-$(uname -r)
    # make menuconfig

    and then rebuilding it

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