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#!/bin/bash | |
#Make sure we’re running with root permissions. | |
if [ `whoami` != root ]; then | |
echo Please run this script using sudo | |
echo Just type “sudo !!” | |
exit | |
fi | |
#Check for 64-bit arch | |
if [uname -m != x86_64]; then |
- Change your database RDS instance security group to allow your machine to access it.
- Add your ip to the security group to acces the instance via Postgres.
- Make a copy of the database using pg_dump
$ pg_dump -h <public dns> -U <my username> -f <name of dump file .sql> <name of my database>
- you will be asked for postgressql password.
- a dump file(.sql) will be created
- Restore that dump file to your local database.
- but you might need to drop the database and create it first
$ psql -U <postgresql username> -d <database name> -f <dump file that you want to restore>
- the database is restored
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import re | |
# Supported tokens and their operations | |
ORDER_OF_OPERATIONS = ["MULTIPLY", "DIVIDE", "ADD", "SUBTRACT"] | |
scanner = re.Scanner([ | |
(r"([0-9]+)", lambda x, y: int(y)), | |
(r"\+", lambda x, y: "ADD"), | |
(r"-", lambda x, y: "SUBTRACT"), | |
(r"\*", lambda x, y: "MULTIPLY"), | |
(r"/", lambda x, y: "DIVIDE"), |
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function MathSolver() { | |
this.infixToPostfix = function(infix) { | |
var outputQueue = ""; | |
var operatorStack = []; | |
var operators = { | |
"^": { | |
precedence: 4, | |
associativity: "Right" | |
}, |
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// by d whyte | |
int[][] result; | |
float t; | |
float ease(float p) { | |
return 3*p*p - 2*p*p*p; | |
} | |
float ease(float p, float g) { |
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import numpy as np | |
def supersample(clip, d, nframes): | |
""" Replaces each frame at time t by the mean of `nframes` equally spaced frames | |
taken in the interval [t-d, t+d]. This results in motion blur.""" | |
def fl(gf, t): | |
tt = np.linspace(t-d, t+d, nframes) | |
avg = np.mean(1.0*np.array([gf(t_) for t_ in tt]),axis=0) | |
return avg.astype("uint8") | |
return clip.fl(fl) |
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#!/bin/sh | |
# Cleanup docker files: untagged containers and images. | |
# | |
# Use `docker-cleanup -n` for a dry run to see what would be deleted. | |
untagged_containers() { | |
# Print containers using untagged images: $1 is used with awk's print: 0=line, 1=column 1. | |
# NOTE: "[0-9a-f]{12}" does not work with GNU Awk 3.1.7 (RHEL6). | |
# Ref: https://github.com/blueyed/dotfiles/commit/a14f0b4b#commitcomment-6736470 | |
docker ps -a | tail -n +2 | awk '$2 ~ "^[0-9a-f]+$" {print $'$1'}' |
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// by dave @ beesandbombs.tumblr.com >:) | |
void setup() { | |
setup_(); | |
result = new int[width*height][3]; | |
result_ = new int[width*height][3]; | |
} | |
int[][] result, result_; | |
float time; |
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