Preetam Pattanashetty preetampvp

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

ctrl-s - freezes the screen, ctrl-q unfreezes it. Useful to stop output without stopping program

at Do job at certain time

cron Execute script at certain intervals (daily, weekly, etc.).

du -k -s directory Get directory size

find rootdir -name filename Look for filename starting with rootdir.

Shell

tmux new -s name - start a new session

tmux new -s name - start a new session in background

tmux new -s name -n window name "process to run" - start a new session with the window name set

tmux kill-session -t name - to kill a session

unity-tweak-tool - tweak unity desktop

macfanctld - service to prevent mac from heating

powertop - power usage

tmux - tmux

liferea - rss reader

	#!/usr/bin/ruby
	# Create display override file to force Mac OS X to use RGB mode for Display
	# see http://embdev.net/topic/284710

	require 'base64'

	data=`ioreg -l -d0 -w 0 -r -c AppleDisplay`

	edids=data.scan(/IODisplayEDID.*?<([a-z0-9]+)>/i).flatten
	vendorids=data.scan(/DisplayVendorID.*?([0-9]+)/i).flatten

	pre-start script
	pkill -f puma
	end script

	post-stop script
	pkill -f puma
	end script

	respawn
	respawn limit 15 5

	respawn
	respawn limit 15 5

	start on runlevel [2345]
	stop on runlevel [06]

	script
	su - uid -c "cd <location> && bundle exec sidekiq" >> /var/log/sidekiq.log
	end script

	#!/bin/sh

	###
	# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
	# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
	###

	# Alot of these configs have been taken from the various places
	# on the web, most from here
	# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx

	call plug#begin('~/.vim/plugged')
	Plug 'junegunn/vim-github-dashboard'
	Plug 'scrooloose/nerdtree'
	Plug 'Xuyuanp/nerdtree-git-plugin'
	Plug 'kien/ctrlp.vim'
	Plug 'kchmck/vim-coffee-script'
	Plug 'bling/vim-airline'
	Plug 'nathanaelkane/vim-indent-guides'
	Plug 'easymotion/vim-easymotion'
	Plug 'marciomazza/vim-brogrammer-theme'

	set -g default-terminal "screen-256color"

	# remap prefix to Control + Space
	set -g prefix C-j
	unbind C-b
	bind C-j send-prefix

	# force a reload of the config file
	unbind R
	bind R source-file ~/.tmux.conf\; display-message "Reloaded!!"