cheatsheet.md

# git
* Installation
```bash
Linux: sudo apt-get install git
Windows: https://git-scm.com/download/win
```
* Creating ssh key
```bash
ssh-keygen -t rsa -b 4096 -C mymail@adress.com
```
* Setting up git
```bash
git config --global user.name “name”
git config --user.email “mail”
```
* Workflow
```bash
git clone git@github.com:<user>/<project>.git
git pull (gets new code from github)
git add <file> (add your work to next commit [stage])
git commit -m “changelog” (add all staged files to repo)
git push (upload your changes to github)
```
* Branching
```bash
git checkout -b <name-of-branch> (create new branch)
git checkout <name-of-branch> (get existing branch)
```
* Adding a Remote (on real GitHub)
```bash
(Requires you already created a repo on github.com with name repo)
git remote add release git@github.com:<user>/<repo>.git
git push -u release master (copies master branch)
```
# jupyter
* Install Python3 Kernel
```bash
python3 -m pip install ipykernel --user
python3 -m ipykernel install --user
```
* Install R Kernel
```R
install.packages(c('repr', 'IRdisplay', 'evaluate', 	'crayon', 'pbdZMQ', 'devtools', 'uuid', 'digest'))
devtools::install_github('IRkernel/IRkernel')
IRkernel::installspec()
```
* Install Jupyter Lab (new frontend for notebooks)
```bash
python3 -m pip install jupyterlab --user
```
* Run Notebook Server Locally
```bash
jupyter notebook
jupyter lab
Run Notebook Server from outside/home
ssh -L 8889:localhost:8889 <user>@geniux.molgen.mpg.de
ssh -L 8889:localhost:8889 elcattivo (or other)
jupyter notebook --port 8889
Useful shortcuts
<Shift> + <Enter>		run Cell/Block
<Ctl> + <Shift> + <D>	single document mode (in jupyter lab)
<Ctl> + <Tab>		    infos for the current variable
```