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How to Check OS Architecture 32 or 64 bit Ubuntu / CentOS / Debian / Linux - Printable Version

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+--- Thread: How to Check OS Architecture 32 or 64 bit Ubuntu / CentOS / Debian / Linux (/thread-85467.html)

How to Check OS Architecture 32 or 64 bit Ubuntu / CentOS / Debian / Linux - xSicKx - 07-01-2018

I know at least 2 ways. Open a terminal(Ctrl+Alt+T) and type:

Code:
uname -a


Result for 32-bit Ubuntu:

   
Code:
Linux discworld 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux


whereas the 64-bit Ubuntu will show:

Code:
Linux discworld 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux


Shorter version:

$ uname -i
x86_64

or

file /sbin/init

Result for 32-bit Ubuntu:

/sbin/init: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped

whereas for the 64-bit version it would look like:

/sbin/init: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15, stripped

Same for systems using systemd (16.04):


Code:
file /lib/systemd/systemd


Result for 64-bit:


Code:
/lib/systemd/systemd: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically





Ubuntu 12.04+ with Unity

    Hit Command(mac) or Window key.
    Type Details, and select "Details" icon
    Read "OS type" field
    64 bit OS will read "64-bit"

[Image: ukq0i.png]

Alternative to get the above screen:

    click System Menu (gear at top right corner)
    click "About this Computer"

I know the terminal responses are good but I guess this is the GUI answer. :)
Ubuntu 11.04 with Unity

    Hit Command(mac) or Window key.
    Type System info, and select System Info icon
    Read "OS type" field
    64 bit OS will read "64-bit"