# Enviroment

## Python

### Pyenv
#### install

sudo apt install -y make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev xz-utils tk-dev

git clone https://github.com/pyenv/pyenv.git ~/.pyenv
git clone https://github.com/pyenv/pyenv-virtualenv.git ~/.pyenv/plugins/pyenv-virtualenv

add to bashrc

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"

### Jupyter
on server

(without root previliege) export XDG_RUNTIME_DIR=""
jupyter notebook --no-browser --port=[port]

on client

ssh -NL localhost:[port_client]:localhost:[port_server] [server]

### Run pip with specific python

python -m pip install [package]

## Git

### Vimdiff
use vimdiff for git diff

git config --global diff.tool vimdiff
git config --global difftool.prompt false
git config --global alias.d difftool

### Switch remote URLs

git remote set-url origin [url]

### Create repo from existing dir

git init
git remote add origin [url]
git fetch origin
git checkout -b master --track origin/master

## Linux Shell

### file size
disk size, file size

df -h
du -sh [file path]

### watch
update per [secs]

watch -c -n [secs]

### rsync
remote

rsync -avzh [source] [destination(directory)] (--delete)

### use specific gpu

CUDA_VISIBLE_DEVICES=[gpu id] python ...

### change ssh welcome message
modify files in ```/etc/update-motd.d```
and make them executable

## Tmux

### Control
* pane to window ```:break-pane -t :[window num]```
([window num] join to current one)
* window to pane ```:join-pane -s :[window num]```
* horizontal to vertical ```prefix + esc : 1```
* swap two panes ```prefix + {```

### pbcopy (mac)

$ brew install reattach-to-user-namespace

# ~/.tmux.conf
set -g default-shell $SHELL 
set -g default-command "reattach-to-user-namespace -l ${SHELL}"

# ~/.vimrc
set clipboard=unnamed

## MISC problems

### Upload to Google Drive from Command Line
* [gdrive](https://github.com/prasmussen/gdrive#downloads)
1. download binary file
2. run gdrive get response code
3. ```gdrive upload [file]```

### X11 on mac
* install XQuartz
* ```$ ln -s /opt/X11/include/X11 /usr/local/include/X11```
* ```$ xcode-select --install```

### Tricky Things on Windows
#### Python (Cython)
* specify VS version ([ref](https://github.com/cython/cython/wiki/CythonExtensionsOnWindows))
* use according cmd to build

    SET DISTUTILS_USE_SDK=1
    SET MSSdk=1 (if setup.py)