How do you run a 32-bit program on a 64-bit version of Ubuntu?


There isn't need of the ia32-libs package anymore (since 12.04 to be exact), if you use the APT system, you have nothing to worry about installing 32-bit packages in a 64-bit system. This happened since the introduction of multiarch, one of the Debian most game changing policies in the way Debian manages it dependencies. This method allows to have different binary targets in the same system without care of the kernel architecture. This doesn't mean that you can run any 32-bit package without preparation, but if you install the libraries/binaries any applications in theory should be able to run. This is true from 64-bit to 32-bit and vice-versa.

For using such method is recommended using the APT managers, to prevent unmet dependencies. The changelog includes a small history about how the changes were made:

In precise the package was emptied and made a transitional package. It was added several dependencies against packages that hasn't been moved to multiarch....
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Native support

Since Ubuntu 11.04 and Debian wheezy (7.0), Debian and Ubuntu have multiarch support: you can mix x86_32 (i386) and x86_64 (amd64) packages on the same system in a straightforward way. This is known as multiarch support See warl0ck's answer for more details.

In older releases, Debian and Ubuntu ship with a number of 32-bit libraries on amd64. Install the ia32-libs package to have a basic set of 32-bit libraries, and possibly other packages that depend on this one. Your 32-bit executables should simply run if you have all the required libraries. For development, install gcc-multilib , and again possibly other packages that depend on it such as g++-multilib. You may find binutils-multiarch useful as well, and ia32-libs-dev on Debian. Pass the -m32 option to gcc to compile for ix86.

Note that uname -m will still show x64_64 if you're running a 64-bit kernel, regardless of what 32-bit user mode components you have installed. Schroot described...

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Brief: This quick tip shows you to check if Ubuntu is 32 bit or 64 bit. You can also check if your system can support 64-bit or not.

Do I have a 32-bit system or 64-bit system? How to tell if my computer is 32-bit or 64-bit? How to find out if my system is 64 bit capable or not? Am I running 32-bit Ubuntu or a 64-bit Ubuntu? Am I running 32-bit Ubuntu on a 64-bit CPU?

These are some of the common questions that a user often wonders about. Finding out if a computer is 32 bit or 64 bit is fairly simple. Before we see how to tell if Ubuntu is 32 bit or 64 bit, first let’s see the difference between the two systems.

32 bit vs 64-bit system

Processors in the early 1990’s used 32-bit architecture. This means that their data bus had the capacity to handle 32 bit at a time. As the technology grew, 64-bit processors came into the scene.

These newer processors have a data bus width of 64 bit. This means they are at least twice as fast to their...

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Most Linux distributions have 64-bit versions for x86_64 processors, such as the AMD Athlon II or the Intel Xeon. Since these distributions maintain their own package repositories, they usually provide binary packages for all of their supported applications. If you are completely content with your out-of-box Linux installation, you may never need to run a 32-bit program.

Some commercial Linux software, particularly games, only provide 32-bit versions. In these rare cases, you will need to configure your 64-bit machine to run 32-bit software.

Install the 32-bit libraries

Because x86_64 processors are designed over x86 technology, they are still able to support 32-bit programs without any hardware emulation, like what you would need to run x86 programs in a PowerPC or Sparc environment. In Linux, all you need to do is install the necessary software libraries to run the 32-bit software. Fortunately, many Linux distributions package these libraries for you....

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Quick answer

To run 32-bit programs on 64-bit installations of Ubuntu, install the package ia32-libs:

markus@ubuntu:~$ sudo apt-get install ia32-libs

Long story

I wrote this article to expand your knowledge and understanding of how Linux works. This knowledge should increase your problem solving skills and speed in the area of server administration and command line use. I show how I adapted an installation shell script of a commercial software package, Flash® Media Server, which was written for RedHat Linux, to work on 64-bit Ubuntu Linux. For every symptom that occurs in the process, I explain the problem behind it and how to fix it. The end result is available in Installing Flash® Media Server on Ubuntu Linux.

This article is the first part in a series on the subject. In it I write about running 32 bit programs on 64 bit operating systems and the concept of shared libraries.

The exact versions of the software used in the course are Ubuntu 8.04...

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Sure! So long as the 64-bit program in question was built to run on that 32-bit OS, yes, you can install it and run it.

Back in the 1970s and early 1980s, most personal computers were 8-bit. Now, the problem with 8 bits is that that’s not a lot of data at all. It gives you 256 possible different values, which you might realize isn’t enough to do any kind of, say, financial calculations (unless you’re happy with being limited to a total of $2.56).

So, even though the computers in question were 8-bit computers, the programs being run manipulated values that were more than 8 bits. Since the systems couldn’t handle that directly, the programmer had to write the program to deal with such values in smaller chunks, holding information about it, and then combining those chunks together.

It’s the same sort of process as this:

9582 + 1234 ------- 6 11 7 10 ------- 10816

Just like people are taught to “carry” when adding large numbers together, or to do...

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How to Install a 32bit program in 64bit Ubuntu

With Ubuntu 12.04 and 13.10 both recommending 64bit for most users (at last), you may find that some software doesn't have a 64bit counterpart.

Some people would have undoubtedly moaned and groaned about it. However, if you favorite no-name muse doesn't seem to swing that way, there is a solution. Lie. That's right, you can trick applications into thinking you're still a 32bit kinda guy. They might not work perfectly every time, and certainly won't take advantage of your new-found super-speed, but they might just plod along anyway.


Some software may not work this way. Some may cause damage that should be easily reversible (no promises). Unfortunately, we can't help every individual case, but you can about specific pieces of software if this doesn't work.

1. Check

First, check to see if the package you want is available in 64bit. Try googling around, 32bit will have...

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One Write plus

was an accounting program from the early 1990's and support was discontinued as of January 31, 2006. While I have no personal experience with the program, it is unlikely that it was ever 32-bit. It is much more likely that it was a 16-bit program and this is why you are having trouble installing and running it on a 64-bit installation of Windows 7.

If your program or its installation application is a 16 bit based program and you have a 64 bit version of Windows it simply will not run natively regardless of compatiblity settings. You will need to run and install Virtual PC in XP Mode to have any chance of a fully operational 16 bit subsystem. If you are running Windows 7 Professional or Ultimate, you can use Windows XP Mode and Virtual PC without a second Windows license.

Windows Virtual PC

Note: you cannot run XP Mode on Windows Home editions. If you are using Windows 7 Home Premium...

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The source code of ProFit 3.1 is available, officially and at no charge. So instead of attempting to run the pre-built 32-bit binary on a 64-bit system that doesn’t have library support installed for it, I recommend building it from source as a 64-bit program.

One option is to build it on your system, where you can easily install anything needed for the build, and to bring the compiled binary to the other system where you also want to run it.

Make sure your own system (the one on which you do have administrative rights) is up to date, then install some tools that are useful for compiling software:

sudo apt update && sudo apt upgrade sudo apt install build-essential libncurses5-dev

The libncurses5-dev package provides header files for one of the libraries this program needs. The others seem to all be dependencies of build-essential (which gives you some handy utilities too, like make, and a compiler if one is not installed yet).

You mentioned libstdc++6...

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I’m trying to run a 32bit Hotspot JVM on a 64bit Debian Mint machine. At first sight it all works until you’ll try to run something using Swing:

java.lang.UnsatisfiedLinkError: /opt/javadev/jdk1.7.0_03_32b/jre/lib/i386/xawt/ cannot open shared object file: No such file or directory

Adding that to the library path: export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu.

But then it gives this error:

java.lang.UnsatisfiedLinkError: /opt/javadev/jdk1.7.0_03_32b/jre/lib/i386/xawt/ wrong ELF class: ELFCLASS64

Any idea what else has to be done here ?

Running 64bit jvm on 32bit OS

Can we use 64bit JVM with Tomcat64bit for 32bit OS. The OS is Amazon Linux machine 32bit.

How is linux simultaneously 32bit and 64bit? Or is that something handled in glibc?

How is Linux simultaneously 32bit and 64bit? Or is that something handled in glibc? I run CentOS 5.3 and it is a 64 bit version; although I build...

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Nowadays 64-bit operating systems are very widespread. But 32-bit OS are still present on the market, in quite obvious quantities. A lot of modern program tools are developed to be run only in 64-bit mode, because the maintenance of both 32 and 64 bit operating systems requires additional expenses.

For the users of 32-bit OS, it is sometimes necessary to use software designed only for 64-bit OS.
So what shall the user do if he/she is not ready to stop using the 32-bit OS as the main working system?

There are certain peculiarities in different operation systems, related to the 64-bit applications launch in the 32-bit environment. Firstly, starting 64-bit applications in the 32-bit environment you lose the benefit of using more RAM. Also, to support 64-bit applications your processor should have a 64-bit architecture. Let's take a look at some of the most popular OS.

In the Mac OS X the core is a hybrid one. It allows the running of any application...

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Many Linux games are built using a 32-bit architecture and so to run them on a 64-bit system you will need to add the necessary 32-bit libraries to your Linux distribution.

To install 32-bit libraries on Ubuntu 12.04 LTS (64-bit), open Terminal and type sudo apt-get install ia32-libs (you will need to enter your password). Then just for good measure, let's make sure your Ubuntu is up to date. Type sudo apt-get update and lastly, restart your computer. To install 32-bit libraries on Ubuntu 13.04 (64-bit) or later, open Terminal and type:
sudo apt-get install lib32z1 (you will need to enter your password). Then just for good measure, let's make sure your Ubuntu is up to date. Type sudo apt-get update and lastly, restart your computer.

Note: Other libraries that might help are: sudo apt-get install libgtk2.0-0:i386 libidn11:i386 libglu1-mesa:i386 libxmu6:i386
and some of this: sudo apt-get install libpangox-1.0-0:i386 libpangoxft-1.0-0:i386

Now you should be...

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Most computers today ship with a 64-bit version of Windows, and often a minimal amount of RAM. This brings into question how well these systems perform. This is especially true when users want to run their legacy 32-bit software on these new computers.

Which raises an interesting question. Do you need more or less RAM How Much RAM Do You Really Need? to run a 32-bit application on a 64-bit version of Windows What Is 64-bit Computing? ? This week, Bruce Epper finds out.

A Reader Asks:

Is it true that running 32-bit apps on a 64-bit windows system consumes 1.5 times more memory compared to running the 32-bit app under a 32-bit Windows operating system?

Bruce’s Reply:

We have previously discussed benefits and drawbacks of keeping everything 64-bit across the board and some of the effects of “mixing and matching” ...

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I'm doing just that. I'm running it two ways.

1. I had a virtual machine installed that uses a copy of MS XP Pro. I ended up with a partitioned hard drive, and it is a real memory hog, but it works. My hard drive is too small now, so I am using an extension - which is a real pain. Had to put 8 Gb on the board also. Hard drive swaps were making it run continually, and task manager takes up 24% of the CPU - go figure.

Moving files from one side to another is painful. I use either dropbox or my extension drive. Peripherals have to be attached and released. Not fun. Integration features exist, but so slow they are not worth it. If you;re working a database, it does not like the use of an extension drive.

2. some of the MS files will load and run directly - Outlook, Word, Excel, Powerpoint. I'm using 2003 versions and they run fine. So try it out first before you invest in new...

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I just installed "sudo apt-get install gcc-multilib" and it allowed to compile succesfully using the following command:

gcc -m32 -o invoke -I$JAVA_HOME/include -I$JAVA_HOME/include/linux cCode.c $JAVA_HOME/jre/lib/i386/server/

Than you very much all!

Here is downloadable source code:

well, first, my ubuntu is 64bit 12.04LTS. and, I installed both 64 and 32bit version of latest jdk 1.7.0_25.

I tried to compile the source code above using 32 bit library of jdk version on my 64bit Ubuntu, it shows a following error:

/usr/lib/jvm/jdk1.7.0_25_x86/jre/lib/i386/server/ could not read symbols: File in wrong format collect2: ld returned 1 exit status

However, if I try to compile those source code using 64 bit library of jdk version, it compiles fine and run very well.

My problem is, as you know, how would I make it compile and run well using 32 bit...

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Most PC’s shipping these days are rocking 64-bit versions of Windows 8.0 or 8.1. If you’re not sure how to check which bit architecture you have (32-bit or 64-bit) in Windows, there’s a quick command line trick for that.

Today I want to show you something peculiar that you may not have noticed but once I bring it up you’ll certainly have questions.

Assuming you’re rocking a 64-bit OS, kick open the Task Manager and look in the process list.

In the Process tab you should see a few processes with the (32 bit) prefix tacked on the end.

What’s up with that? Why isn’t your 64-bit PC running all your application in 64-bit mode? It seems like you’re not getting the most performance from your system right?

There are a myriad of benefits from running a 64-bit version of Windows such as better memory usage and tighter security so why are some of your applications failing to take advantage of that?

Good question. Let me attempt to explain what’s...

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How to find and tell if you’re using 32 bit or 64 bit Linux Ubuntu Operating System. How to tell if Ubuntu OS is 32 or 64 bit. Easily find if 32 bit or 64 bit Ubuntu OS is installed on a machine.

There are two way to check if you’re using 32 bit or 64 bit Linux Ubuntu OS:

Using Command Line Using GUI/Ubuntu Dash

Using Command Line

Many people also get confused if they are using 32 bit Ubuntu or 64 bit Ubuntu. Here is an easy way to tell if you are using 32 bit Ubuntu or 64 bit Ubuntu. Open the Terminal and run the following command:

uname -m

Your results should be like this (see screenshot). You can interpret the output as:

i686 or i386: You are running 32 Bit Ubuntu OS.
x86_64: You are running 64 Bit Ubuntu OS.

Using GUI/Ubuntu Dash

If you want to search it using Ubuntu Dash/GUI way, open details from Unity Dash. Type details in Ubuntu Dash search bar.

Then you’ll see the result as: (screenshot...

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