Mick T. mick-t

Django Tutorials

I've scanned through these, and they all seem to cover the basic features of Django (models, function-based views, forms, templates, CSS, and the admin interface), and use Python 3 and Django 2. My notes indicate what I think differentiates them.

Django Girls tutorial

Written for Django Girls workshops or self-teaching
Widely recommended for beginners, even to Python, web development, and command line
Build a blog
Instructions for Windows, Mac, and Linux (including Python installation)

Tuning Intel Skylake and beyond for optimal performance and feature level support on Linux:

Note that on Skylake, Kabylake (and the now cancelled "Broxton") SKUs, functionality such as power saving, GPU scheduling and HDMI audio have been moved onto binary-only firmware, and as such, the GuC and the HuC blobs must be loaded at run-time to access this functionality.

Enabling GuC and HuC on Skylake and above requires a few extra parameters be passed to the kernel before boot.

Instructions provided for both Fedora and Ubuntu (including Debian):

Note that the firmware for these GPUs is often packaged by your distributor, and as such, you can confirm the firmware blob's availability by running:

Install NoMachine server edition on server: https://www.nomachine.com/download/download&id=25
Install VirtualGL on server: http://sourceforge.net/projects/virtualgl/files/2.4.90%20%282.5beta1%29/
Ensure that the server is using hardware rendering & has OpenGL enabled.
Edit /usr/NX/etc/node.cfg and
- uncomment EnableVirtualGLSupport 0 and replace 0 with 1
- uncomment DefaultDesktopCommand and replace string "/usr/local/bin/nxsession.sh"
Create /usr/local/bin/nxsession.sh with the following contents:

#!/bin/bash

Importing and exporting CSV files with PostgreSQL

Let’s see how to use PostgreSQL to import and export CSV files painlessly with the COPY command.

Import CSV into table t_words:

COPY t_words FROM '/path/to/file.csv' DELIMITER ',' CSV;

You can tell quote char with QUOTE and change delimiter with DELIMITER.

	# HB Rclone destination
	#
	# Rclone is a program that syncs local directories to various cloud
	# services. The Rclone project is at: http://rclone.org
	#
	# HashBackup supports shell destinations to interface to storage
	# systems that are not natively supported in HashBackup. If there is
	# native support for a destination, it should always be preferred over
	# a shell destination.
	#

	#!/bin/bash

	# Source: http://vmhacks.com/freeipa-password-expiry-notification-script-for-red-hat-identity-management/
	# notifies people a set number of days before expiry, once via email

	# open a kerberos ticket using keytab authentication
	# the following keytab file was made using ktutil with rc4-hmac

	/usr/bin/kinit [email protected] -k -t /sextoys/admin.keytab

	#!/bin/sh -x ## or just ` curl -Ls http://git.io/vRozn \| sh `.

	## Downloads the Mac OS X 10.10 Recovery Partition update,
	## Copy's over the 10.10 version of Disk Utility.app, then
	## use git to apply a binary patch so it will run on 10.11+.

	cd /tmp

	rm -rf DU1010
	mkdir DU1010

	# If we're in a git repo, print the first 9 characters of the current committish.
	function parse_git_commit() {
	git rev-parse HEAD 2>/dev/null \| cut -c1-10
	}

	# If we're in a git repo, print the current branch name. The sed call deletes
	# any line not starting with '* ', then removes the '* '
	function parse_git_branch () {
	git rev-parse --abbrev-ref HEAD 2>/dev/null
	}

	yum list installed \| awk '{print $1";"$2";"$3}' > /home/list_installed.csv
	yum list available \| awk '{print $1";"$2";"$3}' > /home/list_available.csv
	yum check-update \| awk '{print $1";"$2";"$3}' > /home/check_update.csv