Madhu Srinivasan secunit64

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "your_email@youremail.com"

Performance of Flask, Tornado, GEvent, and their combinations

Wensheng Wang, 10/1/11

Source: http://blog.wensheng.org/2011/10/performance-of-flask-tornado-gevent-and.html

When choosing a web framework, I pretty much have eyes set on Tornado. But I heard good things about Flask and Gevent. So I tested the performance of each and combinations of the three. I chose something just a little more advanced than a "Hello World" program to write - one that use templates. Here are the codes:

1, Pure Flask (pure_flask.py)

Search for a string within files in the current directory

grep -wrin "search for this text" .

Find subdirectories matching a pattern

find /your/directory -name "pattern*"

Description of nodes, cores and memory

sinfo -o "%n,%N,%o,%X,%Y,%Z,%c,%m"
sinfo -o "%10n %10N %10o %10X %10Y %10Z %10c %10m %25f %10G"

Exclude a specific node

Setting up a reverse SSH Tunnel

ssh -N -R 2210:localhost:22 username@host.com

This command can be interpreted as, create a tunnel between the remote host's port 2210 and localhost:22, where the remote host is host.com.

-R implies that the tunnel will be used from the remote side - i.e. host.com.

This command will initiate an ssh connection with reverse port forwarding option

	<?xml version="1.0" encoding="UTF-8"?>
	<opml version="1.0">
	<head>
	<title>Graphics, Games, Programming, and Physics Blogs</title>
	</head>
	<body>
	<outline text="Tech News" title="Tech News">
	<outline type="rss" text="Ars Technica" title="Ars Technica" xmlUrl="http://feeds.arstechnica.com/arstechnica/index/" htmlUrl="https://arstechnica.com"/>
	<outline type="rss" text="Polygon - Full" title="Polygon - Full" xmlUrl="http://www.polygon.com/rss/index.xml" htmlUrl="https://www.polygon.com/"/>
	<outline type="rss" text="Road to VR" title="Road to VR" xmlUrl="http://www.roadtovr.com/feed" htmlUrl="https://www.roadtovr.com"/>

	> git submodule deinit <path_to_submodule>
	> git rm <path_to_submodule>
	> git commit-m "Removed submodule "
	> rm -rf .git/modules/<path_to_submodule>

	#!/bin/sh
	#
	# This is a simple alternative to /usr/bin/lsb_release which
	# doesn't require python.
	#
	# If /etc/os-release exists then we use that to output data
	# in a compatible format to the original lsb_release utility.
	#
	# I consider this script trivial enough to be in the public-domain,
	# but any patches or suggestsions will be welcome.

	"""Demonstration of server-sent events with Tornado. To see the
	stream, you can either point your browser to ``http://localhost:8080``
	or use ``curl`` like so::

	$ curl http://localhost:8080/events

	"""

	import signal
	from tornado import web, gen

	import asyncio
	async def trigger(delay):
	while True:
	print("Triggered telemetry generation")
	await asyncio.sleep(delay)
	async def main(delay, duration):
	task = asyncio.create_task(trigger(delay))
	loop = asyncio.get_event_loop()
	loop.call_later(duration, task.cancel)
	try: