anistark

if [ -z "$SSH_AUTH_SOCK" ] ; then
  eval `ssh-agent -s`
  ssh-add ~/.ssh/delivery
fi

if [ -f ~/.bashrc ]; then
   source ~/.bashrc
fi

anistark

  def generate_secure_s3_url(s3_key)
    #
    # s3_key would be a path (including filename) to the file like:  "folder/subfolder/filename.jpg"
    # but it should NOT contain the bucket name or a leading forward-slash
    #
    # this was built using these instructions:
    # http://docs.amazonwebservices.com/AmazonS3/latest/dev/index.html?S3_QSAuth.html
    # http://aws.amazon.com/code/199?_encoding=UTF8&jiveRedirect=1
    
    s3_base_url       = MyApp::Application::S3_BASE_URL # i.e. https://mybucket.s3.amazonaws.com

anistark

find . -maxdepth 1 -name "*.pdf" -print0 | xargs -0 rm

anistark

Clarification: There are two default shell settings.

One is the Unix setting and can be changed with chsh -s.
The other is the Terminal.app-specific setting, and can be changed in Terminal preferences.
You can set your Terminal default shell command to /bin/bash -l in the Terminal app.

-l tells Bash to read startup files. Even if you don't have any user-specific startup files, there are system-wide startup files that will, among other things, set the prompt to the one you're familiar with.

If you've properly set your Unix default shell, you should be able to select Default login shell in Terminal preferences and this will happen automatically.

anistark

#import necessary libraries
import cv2
import numpy as np

#capture video from the webcam
cap = cv2.VideoCapture(0)

#load the face finder
face_cascade = cv2.CascadeClassifier('/home/sm/Desktop/haarcascade_frontalface_default.xml')

anistark

Useful Commands

Create simple server on the current directory u r in

Python

python -m SimpleHTTPServer 8000

anistark

Common Python Errors and handling them

lxml error on mac

Occurance :

    #include "libxml/xpath.h"
             ^
 1 error generated.

anistark

#!/bin/bash

sudo mrt uninstall
sudo mrt uninstall --system
rm -rf ~/.meteorite

sudo rm /usr/local/bin/meteor
rm -rf ~/.meteor

sudo chown -R $(whoami) ~/.npm

anistark

Postgres

Run :

psql -d test -U postgres -W

Most frequently used commands :

anistark

conf = {
  "sqs-access-key": "",
  "sqs-secret-key": "",
  "sqs-queue-name": "",
  "sqs-region": "us-east-1",
  "sqs-path": "sqssend"
}

import boto.sqs
conn = boto.sqs.connect_to_region(