Cannot upgrade libc6, "Already newest version" - linux

I have recently installed Linux Mint on a new machine and I am trying to download virtual box.
The problem is it won't download because of this error:
Error: Dependency is not satisfiable: libc6 (>=2.27)
When I run:
sudo apt-get install libc6
It tells me
libc6 is already the newest version (2.23-0ubuntu10).
When I update the cache of my software sources I get the message that it could not download all repository indexes so I assume it might be related to that but I have no idea how to fix it.

Sometimes it happens when you try to run the wrong version (build) of the application in your system.
As an example, the current Virtualbox version is 6.1.22. And I download it for the Ubuntu 19.10 / 20.04 / 20.10 / 21.04 host because there is no separate download link available for Linux Mint distribution. But my Linux Mint distribution is 19.3 cinnamon and Mint 19.3 is based on Ubuntu 18.04 LTS. So, the Virtualbox version which is built for Ubuntu 20.04, 20.10, 21.04 is not going to work for the distribution which is using Ubuntu 18.04. This is the reason for getting ( Error: Dependency is not satisfiable: libc6 (>=2.29) ) error.
When I downloaded the Virtualbox which is particularly built for Ubuntu 18.04 everything worked fine :)
For more clarity watch this video https://www.youtube.com/watch?v=1K2zx32tBwA
OR, just download the VirtualBox from the Software Center. that will work fine too.

I couldn't solve the issue but I managed to download virtual box through the software manager.

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Openstack installation error on ubuntu 16.04

I'm getting the following error while installing Openstack on Ubuntu 16.04.7. Can someone please help.openstack-error
You are installing a version of OpenStack that is no longer supported on Ubuntu 16.04. You either need to upgrade to 20.04 or 18.04.
An alternative would be to try to install an older version of OpenStack that supports Ubuntu 16.04 by changing the branch you use for Devstack.
git checkout stable/rocky

Error while installinng libimobiledevice in ubuntu 14.04

After installing libimobiledevice in ubuntu 14.04, when I run command 'ideviceinfo' it is generating error
'Could not connect to lockdownd, error "code -5"'
I have other dependencies - build-essential
libudev-dev,
libimobiledevice6,
libimobiledevice-utils,
libusb-1.0-0-dev,
libimobiledevice-dev,
libzip-dev
Correctly installed with no error.
Can I get some advices about the error ?
You didn't mention how you acquired libimobiledevice - did you install it via apt-get or did you compile it from source?
Ubuntu 14.04 ships with a very old version of libimobiledevice, and there have been changes made to libimobiledevice to provide compatibility with newer versions of iOS which are probably not in Ubuntu 14.04.
We host a PPA which provides up-to-date builds of libimobiledevice; currently only for Ubuntu 16.04 though. You can find it at https://launchpad.net/~quamotion/+archive/ubuntu/ppa/+packages .
Let me know if you need help configuring the PPA and installing the latest libimobiledevice.

How to uninstall MPICH in linux (Ubuntu)?

I have manually downloaded and installed MPICH from MPICH.org using the cookbook starting from section 2.2. But now I want to remove it. Does anybody have an idea how to uninstall it correctly, so I can reinstall another version? I have googled but have not found an answer that I can use.
"sudo apt-get remove mpich" doesn't remove the manually installed version.
My OS is Linux Mint 17.1, and the mpich version is 3.2
I don't think I can use this thread Ubuntu 12.04 and MPICH performance

installing specific packages on ns2

I want to install ns2 on my computer. After trying in some ways like:installing on Ubuntu 13.10, or installing via cygwin on 64 bits windows 7, I faced with problems such as unable to find ns.exe in ns-2.26 or other versions directory of cygwin. Now I've installed win XP sp3 on VMware, and ns2 on cygwin in this windows environment. Now most of those problems(with Ubuntu 13.10 or cygwin on win7) are solved but i need to have these packages "XFree86"(all of them) and "mansim" on ns2 (v2.26). The problem here, is that i don't know where and how can i download and install them and not sure whether it's possible or not. I've googled it but can't find useful idea. Thanks in advance and sorry for bad English.
Solved you say? Why then be interested in the year 2002 XFree86?
I.e. XFree86 hasn't been used in a new OS release since then : Redhat 9 and other OS´s from that year. (The latest OS with XFree86 was RHEL3, based on Redhat 9.)
Cygwin: If you have X (The GUI Desktop), you also have the "x-packages". (xorg-***, libX*)
Ubuntu: You'd usually not download software. 'apt' is used for that.
$ sudo apt-get update
$ sudo apt-get install g++ g++-4.4 autoconf libtool libxmu-dev xgraph
.... When 'libxmu-dev' is installed, you have all the required X-libraries for ns2.
Mannasim: There's an old patch for ns-2.29.3.
But what we mostly use today is the patch for ns-2.35. Or the complete "ns235-mannasim":
$ git clone git://github.com/paultsr/ns-allinone-2.35.git
Mannasim INFO:
http://www.linuxquestions.org/questions/tags/mannasim/
https://groups.google.com/forum/?fromgroups#!searchin/ns-users/mannasim|sort:date

libsdl2-image-2.0-0 on Ubuntu 10.04.3 LTS

I am trying to install libsdl2-image-2.0-0 on Ubuntu 10.04.3 LTS and I am getting this error: "Error: Dependency is not satisfiable: libc6 (>= 2.14)"
I have "upgraded" to the latest version of Linux already and it wasn't my cup of tea. I ended up reinstalling Ubuntu 10.04.3 LTS.
All of that said, how can I get SDL 2.0 to work on this version of Linux? Thanks!
SDL2 is really new in the repository. Even in the newest release of Ubuntu, we got SDL2, SDL2-image but not SDL2-ttf.
So you got two choice :
1 - You need to compile the entire library yourself.
2 - Update your distribution, but your will still need to compile sdl2-ttf, because it's not in the official repository at the moment.

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