spike77453

Serial console for KVM based VM and IPMI serial channel

Set in /etc/default/grub:

...
###GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0,115200n8 console=tty1"
GRUB_CMDLINE_LINUX=""

This example takes olddisk.qcow2 and resizes it into newdisk.qcow2, extending one of the guest's partitions to fill the extra space.

	# How to determine if a bash variable is empty?


	# A variable in bash (and any POSIX-compatible shell) can be in one of three states:
	#
	# unset
	# set to the empty string
	# set to a non-empty string
	# Most of the time you only need to know if a variable is set to a non-empty string, but occasionally it's important to distinguish between unset and set # to the empty string.
	#

	#!/bin/bash
	#
	# Show user stats (commits, files modified, insertions, deletions, and total
	# lines modified) for a repo

	git_log_opts=( "$@" )

	git log "${git_log_opts[@]}" --format='author: %ae' --numstat \
	\| tr '[A-Z]' '[a-z]' \
	\| grep -v '^$' \

	#!/usr/bin/env python2

	import SimpleHTTPServer
	import SocketServer
	import logging

	PORT = 8000

	class GetHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):

	#!/usr/bin/env python
	##############################################################################
	#
	# Copyright (C) Zenoss, Inc. 2013, all rights reserved.
	#
	# This content is made available according to terms specified in
	# License.zenoss under the directory where your Zenoss product is installed.
	#
	##############################################################################

	#!/bin/bash

	# As the "bufferbloat" folks have recently re-discovered and/or more widely
	# publicized, congestion avoidance algorithms (such as those found in TCP) do
	# a great job of allowing network endpoints to negotiate transfer rates that
	# maximize a link's bandwidth usage without unduly penalizing any particular
	# stream. This allows bulk transfer streams to use the maximum available
	# bandwidth without affecting the latency of non-bulk (e.g. interactive)
	# streams.