Software & Apps Linux Use Arch Command to Find out Computer's Architecture Type Find the architecture of you Linux system Share Pin Email Print maciek905 / Getty Images Linux Switching from Windows By Gary Newell Writer Gary Newell was a freelance contributor, application developer, and software tester with 20+ years in IT, working on Linux, UNIX, and Windows. our editorial process Gary Newell Updated February 09, 2020 In theory, you should already know the architecture of your computer because, after all, you installed Linux on it in the first place. Of course, it could be the case that you didn't install Linux on the computer and you need to know the architecture before compiling a package to run on it. You might think that the type of architecture is obvious, but when you take Chromebooks into consideration there is a possibility it is either x86_64 or arm based, and it isn't necessarily clear just by looking at a computer whether it is 32-bit or 64-bit. Architecture Types So what types are there? Just checking out the Debian downloads page lists the following architectures: amd64arm64armelarmhfi386mipsmipselpowerpcppc64els390ex Other potential architectures include i486, i586, i686, ia64, alpha, and sparc. The following command will show you the architecture for your computer: arch In essence, the arch command is a simple way of expressing the following command: uname -m uname is used to print all sorts of system information about your computer of which the architecture type is just a small part. Simply typing uname on its own shows you the operating system you are running, i.e. Linux whereas uname -a displays all the information available from the uname command including the following: kernel namenode namekernel releasekernel versionmachine hardware (i.e. same as arch command)processorhardware platformoperating system You can use switches to specify just the information you want to show. uname -a - shows all informationuname -s - shows the kernel (i.e. Linux)uname -n - shows the network hostname (i.e. localhost.localdomain)uname -r - shows the kernel release (i.e. 3.10.0-229.14.1.e17.x86_64uname -v - shows the kernel version (i.e. #1 SMP Tue Sep 15 15:05:51 UTC 2015)uname -m - shows the architecture (i.e x86_64)uname -p - shows the processor type (i.e x86_64)uname -i - hardware platform (i.e. x86_64)uname -o - operating system You can see the full manual for uname and arch by typing the following command: info coreutils 'uname invocation' It is also possible to get full details of the arch command by typing man arch. The arch command itself has only 2 switches: arch --help - display the help pagearch --version - display the version number To complete this guide the following command will also show you whether your system is running 32-bit or 64-bit: getconf LONG_BIT getconf actually stands for "get configuration" value. It is part of the POSIX programmers manual. The LONG_BIT returns the size of a long integer. If it returns 32 then you have a 32-bit system whereas if it returns 64 you have a 64-bit system. This method isn't foolproof however and it may not work on all architectures. For full details about the getconf command type "man getconf" into a terminal window. Whilst it is obviously easier to type arch than uname -m it is worth noting that the arch command has been deprecated and may not be available on all versions of Linux in the future. You should, therefore, get used to using the uname command instead.