Miscellaneous Cheatsheet

Cheatsheet for commands/how-tos I frequently needed to google.

Add remote branch

git checkout --track origin/name_of_the_remote_branch

Save git credential to avoid typing user and password repeatedly

git config --global credential.helper 'cache --timeout=36000'

Download file from jupyter notebook

from IPython.display import FileLink
FileLink('something.csv')

Remove an SSH passphrase

ssh-keygen -f ~/.ssh/my-ssh-file -p

and enter only your old passphrase, enter no new passphrase.

Conda Clone from existing env

conda create -n new_env --clone root

xgboost

Conda’s version is old.

cd Downloads
git clone --recursive https://github.com/dmlc/xgboost
cd xgboost; cp make/minimum.mk ./config.mk; make -j4
cd python-package; sudo python setup.py install

Git setup for contributing to repo

• Fork the repo on github (e.g. https://github.com/dmlc/xgboost)
• Clone your forked repo: git clone https://github.com/yang-zhang/xgboost
• Add original owner’s repository: cd xgboost; git remote add dmlc https://github.com/dmlc/xgboost
• Show remote repo: git remote -v See here for reference.

Python 2 to 3

2to3 -w example.py

Control video speed

• Google YouTube Keyboard Shortcuts
• Video Speed Controller — Chrome extension

Make top sort by memory usage

top -o MEM

Add link to imported modules on github

Move tabs using keyboard in Chrome

Kaggle

!kg config -g -u $KAGGLE_USER -p $KAGGLE_PW -c $competition_name
!kg download
!kg submit $submit_file -u $KAGGLE_USER -p $KAGGLE_PW -m $model_description

Install R package for in conda

In code

from rpy2.robjects.packages import importr
utils = importr('utils')
utils.install_packages(ro.StrVector(['entropy', 'psych', 'vcd']))

Run a R kernal in Jupyter and run

install.packages(c(‘entropy’, ‘psych’, ‘vcd’))