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yiwang / DataFrameFunctions.scala
Created September 1, 2016 18:30 — forked from ssimeonov/DataFrameFunctions.scala
Querying DataFrame with SQL without explicit registration of a temporary table
object DataFrameFunctions {
final val TEMP_TABLE_PLACEHOLDER = "~tbl~"
/** Executes a SQL statement on the dataframe.
* Behind the scenes, it registers and cleans up a temporary table.
*
* @param df input dataframe
* @param stmtTemplate SQL statement template that uses the value of
* `TEMP_TABLE_PLACEHOLDER` for the table name.
@yiwang
yiwang / tmux-cheatsheet.markdown
Created September 1, 2016 16:37 — forked from MohamedAlaa/tmux-cheatsheet.markdown
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@yiwang
yiwang / elasticsearch.md
Created April 20, 2016 15:11 — forked from nicolashery/elasticsearch.md
Elasticsearch: updating the mappings and settings of an existing index

Elasticsearch: updating the mappings and settings of an existing index

Note: This was written using elasticsearch 0.9.

Elasticsearch will automatically create an index (with basic settings and mappings) for you if you post a first document:

$ curl -X POST 'http://localhost:9200/thegame/weapons/1' -d \
'{
  "_id": 1,
@yiwang
yiwang / statsd.md
Created February 23, 2016 18:42 — forked from trusche/statsd.md
Installing graphite and statsd on OS X Yosemite

Prerequisites

  • Homebrew
  • Python 2.7
  • Git

Graphite

Install Cairo

There's an issue with cairo 14.x that results in the axis fonts on the graphs being HUUUUUGE. Downgrading to 12.6 helps:

@yiwang
yiwang / springer-free-maths-books.md
Created December 28, 2015 18:05 — forked from bishboria/springer-free-maths-books.md
Springer have made a bunch of maths books available for free, here are the direct links
@yiwang
yiwang / shellout.py
Created December 22, 2015 21:48 — forked from miku/shellout.py
shellout
def shellout(template, **kwargs):
"""
Takes a shell command template and executes it. The template must use
the new (2.6+) format mini language. `kwargs` must contain any defined
placeholder, only `output` is optional.
Raises RuntimeError on nonzero exit codes.
Simple template:
wc -l < {input} > {output}
@yiwang
yiwang / PicConverText.py
Last active August 29, 2015 14:17 — forked from evi1m0/PicConverText.py
#!/usr/bin/env python
# coding=utf8
# author=evi1m0
# website=linux.im
'''
12306 Captcha Picture:
author: Evi1m0@20150316
1. Download Captcha
2. Pic Conver Text
@yiwang
yiwang / screen.md
Last active August 29, 2015 14:12

Set up screen

  1. docker run --detach --interactive --tty --privileged --net=host fedora /bin/bash
  2. docker attach $CONTAINER_ID
  3. yum install screen

Create screen session

  1. docker attach $CONTAINER_ID
  2. screen -S test
  3. Detach from screen
@yiwang
yiwang / README.markdown
Last active August 29, 2015 14:11 — forked from terlar/README.markdown
@yiwang
yiwang / bootstrap_homeshick.sh
Last active August 29, 2015 14:07 — forked from andsens/bootstrap_homeshick.sh
#!/bin/bash -ex
# Paste this into ssh
# curl -sL https://gist.github.com/andsens/2913223/raw/bootstrap_homeshick.sh | tar -xzO | /bin/bash -ex
# When forking, you can get the URL from the raw (<>) button.
### Set some command variables depending on whether we are root or not ###
# This assumes you use a debian derivate, replace with yum, pacman etc.
aptget='sudo apt-get'
chsh='sudo chsh'