Dan dantheman213

## gist:9808444
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## The Technical Interview Cheat Sheet.md

      
              1 file
            
          
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                tsiege
                / The Technical Interview Cheat Sheet.md
            
            
              Last active
              April 20, 2024 16:52
            
              
                This is my technical interview cheat sheet. Feel free to fork it or do whatever you want with it. PLEASE let me know if there are any errors or if anything crucial is missing. I will add more links soon.
              
          
    ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!


\

  
## postgres-cheatsheet.md

      
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                Kartones
                / postgres-cheatsheet.md
            
            
              Last active
              April 30, 2024 19:47
            
              
                PostgreSQL command line cheatsheet
              
          
    PSQL

Magic words:
psql -U postgres
Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)


## ubuntu-compass-ruby
#https://gorails.com/setup/ubuntu/14.04
sudo apt-get update
sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties
sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev

curl -L https://get.rvm.io | bash -s stable
source ~/.rvm/scripts/rvm
echo "source ~/.rvm/scripts/rvm" >> ~/.bashrc
rvm install 2.1.2
rvm use 2.1.2 --default

## install_ffmpeg_ubuntu.sh
#!/bin/bash

# Bash script to install latest version of ffmpeg and its dependencies on Ubuntu 12.04 or 14.04
# Inspired from https://gist.github.com/faleev/3435377

# Remove any existing packages:
sudo apt-get -y remove ffmpeg x264 libav-tools libvpx-dev libx264-dev

# Get the dependencies (Ubuntu Server or headless users):
sudo apt-get update

## bash-cheatsheet.sh
#!/bin/bash
#####################################################
# Name: Bash CheatSheet for Mac OSX
#
# A little overlook of the Bash basics
#
# Usage:
#
# Author: J. Le Coupanec
# Date: 2014/11/04

## golang-tls.md

      
              1 file
            
          
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                denji
                / golang-tls.md
            
            
              Last active
              April 29, 2024 03:39
                — forked from spikebike/client.go
            
              
                Simple Golang HTTPS/TLS Examples
              
          
    Moved to git repository: https://github.com/denji/golang-tls

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048

# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)

  
## ffmpeg last frame video
#!/bin/bash

fn="$1"
of=`echo $1 | sed s/mp4/jpg/`

lf=`ffprobe -show_streams "$fn" 2> /dev/null | grep nb_frames | head -1 | cut -d \= -f 2`
rm -f "$of"
let "lf = $lf - 1"
ffmpeg -i $fn -vf select=\'eq\(n,$lf\) -vframes 1 $of

## Great GNU Screen config
# GNU Screen
# Preferred Configuration File

# Turn off start up message
startup_message "off"

# Allow bold colors
attrcolor b ".I"

# Tell screen how to set colors. AB = background, AF=foreground

## Controller.java
import javafx.fxml.Initializable;
import javafx.scene.control.Slider;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;

import java.net.URL;
import java.util.ResourceBundle;

public class Controller implements Initializable {
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	<body>
	<canvas id="the-canvas" style="border:1px solid black"></canvas>
	<input id='pdf' type='file'/>

	<!-- Use latest PDF.js build from Github -->
	#https://gorails.com/setup/ubuntu/14.04
	sudo apt-get update
	sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties
	sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev

	curl -L https://get.rvm.io \| bash -s stable
	source ~/.rvm/scripts/rvm
	echo "source ~/.rvm/scripts/rvm" >> ~/.bashrc
	rvm install 2.1.2
	rvm use 2.1.2 --default
	#!/bin/bash

	# Bash script to install latest version of ffmpeg and its dependencies on Ubuntu 12.04 or 14.04
	# Inspired from https://gist.github.com/faleev/3435377

	# Remove any existing packages:
	sudo apt-get -y remove ffmpeg x264 libav-tools libvpx-dev libx264-dev

	# Get the dependencies (Ubuntu Server or headless users):
	sudo apt-get update
	#!/bin/bash
	#####################################################
	# Name: Bash CheatSheet for Mac OSX
	#
	# A little overlook of the Bash basics
	#
	# Usage:
	#
	# Author: J. Le Coupanec
	# Date: 2014/11/04
	#!/bin/bash

	fn="$1"
	of=`echo $1 \| sed s/mp4/jpg/`

	lf=`ffprobe -show_streams "$fn" 2> /dev/null \| grep nb_frames \| head -1 \| cut -d \= -f 2`
	rm -f "$of"
	let "lf = $lf - 1"
	ffmpeg -i $fn -vf select=\'eq\(n,$lf\) -vframes 1 $of
	# GNU Screen
	# Preferred Configuration File

	# Turn off start up message
	startup_message "off"

	# Allow bold colors
	attrcolor b ".I"

	# Tell screen how to set colors. AB = background, AF=foreground
	import javafx.fxml.Initializable;
	import javafx.scene.control.Slider;
	import javafx.scene.control.TableCell;
	import javafx.scene.control.TableColumn;
	import javafx.scene.control.TableView;

	import java.net.URL;
	import java.util.ResourceBundle;

	public class Controller implements Initializable {