Shivam ShivamJoker

MongoDB Cheat Sheet

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Filter	Description	Example
allintext	Searches for occurrences of all the keywords given.	`allintext:"keyword"`
intext	Searches for the occurrences of keywords all at once or one at a time.	`intext:"keyword"`
inurl	Searches for a URL matching one of the keywords.	`inurl:"keyword"`
allinurl	Searches for a URL matching all the keywords in the query.	`allinurl:"keyword"`
intitle	Searches for occurrences of keywords in title all or one.	`intitle:"keyword"`

A list of useful commands for the FFmpeg command line tool.

Most recently tested on macOS Sierra (10.12.6)

Download the installation script; curl https://bootstrap.pypa.io/get-pip.py -o ~/Downloads/get-pip.py
Run the installation, appending the --user flag; python ~/Downloads/get-pip.py --user. pip will be installed to ~/Library/Python/2.7/bin/pip
Make sure ~/Library/Python/2.7/bin is in your $PATH. For bash users, edit the PATH= line in ~/.bashrc to append the local Python path; ie. PATH=$PATH:~/Library/Python/2.7/bin. Apply the changes, source ~/.bashrc.
Use pip! Remember to append --user when installing modules; ie. pip install <package_name> --user

Click me

	<html>
	<body>
	<h4>websocket</h4>
	<h5>Group: <span id="group">darwin</span></h5>
	<!-- a hardoced group name -->
	<button onclick="bjoin();">join group</button><br>
	<input id="text" type="text"/>
	<span id="out"></span>
	<script>
	var group=document.getElementById("group").textContent;

	#!/bin/bash

	TABLE_NAME=TableName
	KEY=id

	aws dynamodb scan --table-name $TABLE_NAME --attributes-to-get "$KEY" --query "Items[].id.S" --output text \| tr "\t" "\n" \| xargs -t -I keyvalue aws dynamodb delete-item --table-name $TABLE_NAME --key '{"id": {"S": "keyvalue"}}'

	/**
	* Encrypts plaintext using AES-GCM with supplied password, for decryption with aesGcmDecrypt().
	* (c) Chris Veness MIT Licence
	*
	* @param {String} plaintext - Plaintext to be encrypted.
	* @param {String} password - Password to use to encrypt plaintext.
	* @returns {String} Encrypted ciphertext.
	*
	* @example
	* const ciphertext = await aesGcmEncrypt('my secret text', 'pw');

	#!/bin/bash

	USER=${1:-sebble}

	STARS=$(curl -sI https://api.github.com/users/$USER/starred?per_page=1\|egrep '^Link'\|egrep -o 'page=[0-9]+'\|tail -1\|cut -c6-)
	PAGES=$((658/100+1))

	echo You have $STARS starred repositories.
	echo

	#!/usr/bin/env python3

	"""
	Get reading from Nova PM Sensor SDS011
	(dust sensor, air quality sensor, PM10, PM2,5)

	Designed to run from cron and append CSV file.

	Script tested using Python3.4 on Ubuntu 14.04.