How to rollback to R 2.12.1 version on Ubuntu? [closed] - r

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I was using R 2.12.1 on my desktop and recently the R got updated to the new version R 2.13.0 which is not I want. Is there anyway to use the R 2.12.1 again and how can I use that?

packages.ubuntu.com seems to have R 2.11.2 for maverick, so that is no help. You may try to see if the Michael's PPA site on launchpad has a rollback feature so that you can get that version there. (Edit: Doesn't seem so. Hmpf.)
Barring that, I would grab the Debian source for 2.12.2 (using the snapshot.debian.org site which has all previous Debian version of r-base and build replacement .deb binaries from that.
Or ... can't you upgrade BioC to a version that works with R 2.13.0? Didn't BioC just have a release too?
Lastly, by far the easiest is to
uncomment the entry for CRAN in /etc/apt/sources.list
update, and
install the most recent Ubuntu version, which is 2.11.2 as shown above.
Ubuntu's next release will get presumably 2.12.* too, so you could also try upgrading to Ubuntu 11.4 now (but note that it is not yet released).

If it was a recent update, it's likely still on your system:
/var/cache/apt/archives

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Unable to install/run Python 3.6.x and 3.7.x with MacOS Big Sur [closed]

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-I upgraded my mac os to latest MacOS Big Sur, after the update my application which previously used to run with python 3.6.x/3.7.x are now not opening/running
Python version 3.9 or higher are running fine.Is any way to run python3.6 or 3.7 in MacOS BigSur?
I ran into a similar issue with Python 3.6 after upgrading to Big Sur.
I went to https://www.python.org/downloads/ and downloaded version 3.9.0.
I then had to re-install some of my python packages e.g numpy too with the new Python version and things seem to be working again for me.

Can't enable dplyr and tidyr: libstdc++.so.6: version `GLIBCXX_3.4.21' not found [duplicate]

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I am trying to fix my problem "GLIBCXX_3.4.15" not found, which is fairly well documented to fix. But it requires getting the file "libstdc++.so.6.0.15" from somewhere.
Most of the solutions tell me to get it from the location that I compiled my c++ library from. However, I did not compile it, it came with my Ubuntu installation, and when I do "locate" for that file it is not found.
So, I would like to just download it from somewhere, but I can't find it on the web anywhere. I have tried to look in the svn repo: svn://gcc.gnu.org/svn/gcc, but was not able to find it (its huge!)
Any help much appreciated :)
Fodder
You shouldn't have to manually download this library, if you're on Ubuntu Linux, it should be shipped inside this package :
sudo apt-get install libstdc++6
If you already have libstdc++6, then the problem is elsewhere and you should explain what you're trying to achieve in the first place.
If you want a newer version of libstdc++6 than the one provided in the default package, then you can try to update to the toolchain test package :
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
Otherwise you would have to compile GCC from source :
Install the prerequisite (using sudo apt-get build-dep gcc-4.7 as instance)
Get the source from GNU.org
Compile it using configure, make and make install
Just realized that was having the similar problem some time ago. Disclaimer: If you know what you are doing, check this repository - Index of /debian/pool/main/g/gcc-4.7. It must be in some of the packages available. Use Archive Manager to get inside.

I am unable to download the reshape2 package in R [closed]

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Closed 7 years ago.
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I am getting this response when trying to install the R package:
>installed.packages("reshape2")
Package LibPath Version Priority Depends Imports LinkingTo Suggests Enhances
License License_is_FOSS License_restricts_use OS_type Archs MD5sum
NeedsCompilation Built
R version 3.2.2 (2015-08-14)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 8 x64 (build 9200)
The function you have called is not used to download packages.
installed.packages returns information about packages available to R. The first argument defines places where the function will be looking for packages. Unless there is reshape2 directory in your current working directory that happens to contain some valid packages, the function will return nothing.
If you want to download and install package, use install.packages:
install.packages("reshape2")
If you want to download package (but not install it), use download.packages.

centos install nginx error : requires libunwind.so.8()(64 bit) [closed]

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Closed 7 years ago.
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I install nginx on centos 7 And met problem
Please help me
Message: 
Error:Package:gperftools-libs-2.4-5.el7.x86_64(epel)
Requires: libunwind.so.8()(64bit)
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
I ran into the same problem today. #Nika Archvadze's answer fixed the problem for me, but it's been downvoted, I suppose because it's a bit sparse.
Anyway, probably a good idea to start with
yum update
then
yum install yum-utils
will install the yum-config-manager package.
then
yum-config-manager --enable cr
will enable the continuous release repository, which is probably already installed, but if not you can install it like this before enabling it
yum install centos-release-cr
Now you will have access to the libunwind package, which is in the continuous release repository, so you should just be able to
yum install nginx
without any problems
yum -y install yum-utils
yum-config-manager --enable cr
yum -y install nginx
The package is available in the Centos 7 Continuous Release (CR) Repository. once enable the cr repo able to complete the installation with out any issue.
Following is the command to enable the cr repository.
#yum-config-manager --enable cr
Source: https://ask.openstack.org/en/question/85814/juno-installation-error-returned-1-error-package-gperftools-libs-24-5el7x86_64-epel/

After I upgrade my R version, how can I easily reinstall all the packages that were installed in the old version? [duplicate]

This question already has answers here:
Closed 12 years ago.
Possible Duplicate:
Painless way to install a new version of R?
In R, packages are not compatible across upgrades, and must be reinstalled. Is there any way to easily install the same set of packages in the new version as what I had installed in the old version?
Edit: I can't easily access the old version of R, since I upgrade via apt.
I just posted a question with a possible solution:
update.packages(checkBuilt=TRUE, ask=FALSE)
What about that doesn't work for you?

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