Learning objections:
conda commandsFollow ANGUS instructions, with m1.medium, using “18.04 Ubuntu devel and docker” as the starting image you select – rather than “DIBSI 2018 workshop image”.
Log in via the Web shell or through ssh in your terminal if you are comfortable with that way now.
Note that neither RStudio nor conda are installed.
See the bioconda paper and the bioconda web site.
Bioconda is a community-enabled repository of 3,000+ bioinformatics packages, installable via the conda package
manager. It consists of a set of recipes, like this one, for sourmash, that are maintained by the community.
It just works, and it’s effin’ magic!!
Conda tracks installed packages and their versions.
Conda makes sure that different installed packages don’t have conflicting dependencies (we’ll explain this below).
Download and install conda:
curl -O -L https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh
bash Miniconda3-latest-Linux-x86_64.sh
Say “yes” to everything the installer asks, and accept default locations by pressing enter when it says “Miniconda3 will now be installed into this location”. (If the prompt looks like this “>>>”, then you are still within the installation process.)
When the installation is complete and the regular prompt returns, run the following command (or start a new terminal session) in order to activate the conda environment:
source ~/.bashrc
Next, enable various “channels” for software install, including bioconda:
conda config --add channels defaults
conda config --add channels conda-forge
conda config --add channels bioconda
Try installing something:
conda install sourmash
and running it –
sourmash
will produce some output. (We’ll tell you more about sourmash later.)
yay!
Conda is a “package manager” or software installer. See the full list of commands.
conda install to install a package.
conda list to list installed packages.
conda search to search packages. Note that you’ll see one package for every version of the software and for every version of Python (e.g. conda search sourmash).
bioconda is a channel for conda, which just means that you
can “add” it to conda as a source of packages. That’s what the conda config above does.
Note, Bioconda supports only 64-bit Linux and Mac OSX.
You can check out the bioconda site.
You can use conda search, or you can use google, or you can go visit the list of recipes.
This will save the list of conda-installed software you have in a particular
environment to the file packages.txt:
conda list --export packages.txt
(it will not record the software versions for software not installed by conda.)
conda install --file=packages.txt
will install those packages in your local environment.
A feature that we do not use much here, but that can be very handy in some circumstances, is different environments.
“Environments” are multiple different collections of installed software. There are two reasons you might want to do this:
To create a new environment named pony, type:
conda create -n pony
Then to activate (switch to) that environment, type:
source activate pony
And now when you run conda install, it will install packages into this new environment, e.g.
conda install -y checkm-genome
(note here that checkm-genome requires python 2).
To list environments, type:
conda env list
and you will see that you have two environments, base and
pony, and pony has a * next to it because that’s your
current environment.
And finally, to switch back to your base environment, do:
source activate base
and you’ll be back in the original environment.
If you want to impress reviewers and also keep track of what your software versions are, you can:
conda list --export software.txt to create a list of all your software and put it in your supplementary material.This is also something that you can record for yourself, so that if you are trying to exactly reproduce
conda works on Windows, Mac, and Linux.
bioconda works on Mac and Linux.
It does not require admin privileges to install, so you can install it on your own local cluster quite easily.
Note: this does require admin privileges, and you cannot run it on your local cluster. For your laptop, you can just install the regular RStudio.
Install necessary system software (gdebi and R):
sudo apt-get update && sudo apt-get -y install gdebi-core r-base
Now, download and install RStudio:
wget https://download2.rstudio.org/rstudio-server-1.1.453-amd64.deb
sudo gdebi -n rstudio-server-1.1.453-amd64.deb
At this point, RStudio will be running on port 8787, and you can follow these instructions to set your password and log into it.