• Gitignore Tutorial by Atlassian
• Visual Git Cheatsheet
• Reference Git Documentation

Core commands:

• Create repository in folder git init
• Clone existing repository git clone URL
• Add any new files git add .
• Commit changes git commit -m 'Message'
• Push changes git push origin master or git push
• Force push changes (overwrites stuff) git push --force
• List all local branches git branch
• List all branches (incl. remote) git branch -a
• Create branch (but don't checkout) git branch NAME
• Create branch (and checkout) git checkout -b NAME
• Switch branch git checkout NAME
• Delete local branch git branch -d NAME
• Force delete local branch git branch -D NAME
• Delete remote branch git push origin --delete NAME
• Work on two branches at the same time (in VS Code):
    from master branch do this: git branch BRANCH-NAME and then git worktree add NAME-of-FOLDER BRANCH-NAME
    Git Worktree Add Example afterwards remove with git worktree remove BRANCH-NAME
• See log git log
• Nicely formatted log log --graph --date=short --pretty=format:"%h%x09%ad%x09%s"
• Purge file from commit history with BFG Repo-Cleaner
• Remove "ignored" files that were added before the gitignore was created git rm -rf --cached . and then git add . (make sure gitignore is uptodate)
• Delete "cached" files that were previously deleted from cache but are still in history git filter-branch --index-filter 'git rm -r --cached --ignore-unmatch "FILENAME"' -f HEAD (DANGEROUS - MAKE BACKUP)
• Fix diverged branch problem: check git log HEAD..origin/master, then if head is the same (which indicates that indeed branches have diverged at some earlier commits) then git merge origin/master and git commit -m "message" and git push

January 2020

1. On local machine

• add ssh key to server's authorised keys ssh-copy-id -i ~/.ssh/id_rsa.pub user@server
• add ssh key to server's authorised keys ssh-copy-id -i c:\users\name\.ssh\id_rsa.pub user@server
• these might need a port too -p 1234

2. On server

• live site: /home/user/site
• bare repo: /home/user/site.git
• initialise bare repo: git init --bare
• alternatively use: git init --shared --separate-git-dir code.git html inside parent folder
• enter hooks folder: cd hooks
• create "post-receive" file: touch post-receive
• add the following script using nano post-receive:

  #!/bin/sh
  git --work-tree=/home/user/site --git-dir=/home/user/site.git checkout -f

• or use the post-receive script mentioned in this article: Simple automated GIT Deployment using GIT Hooks
• fix permissions of post-receive script: chmod +x post-receive

3. On local machine

• add new remote: git remote add server user@server:site.git
• add new remote (with port including via git config file setup): git remote add server ssh://user@server/full/path/to/site.git
• check remotes: git remote -v
• add the following lines to the local git config file (i.e. in .git/config as opposed to the global config in c:\users\name\.gitconfig):

  [alias]
    pushall = !git push origin master && git push server master

• make changes and push to both remotes: git pushall

Specify port:

• git remote set-url server ssh://user@server:port/absolute/path/to/site.git
• (if cmd complains about caching key and you can't click yes, run putty itself so you can click yes there)

Multiple users pushing to same repo on server:

• Create user account for "git": sudo adduser git
• su git
• cd
• mkdir .ssh && chmod 700 .ssh
• touch .ssh/authorized_keys && chmod 600 .ssh/authorized_keys
• Each user wanting to push to the server needs to add their public ssh key to the "git" user's authorized_keys file:
• From local machine: ssh-copy-id -i ~/.ssh/id_rsa.pub git@server
• From local machine: ssh-copy-id -i c:\users\name\.ssh\id_rsa.pub git@server

• see above
• then either have the code live in git home directory and all users push to that as git user (ssh://git@server/...)
• or the code lives in a user home directory and other users of the same git group can push to it (ssh://user@server/...)
• make sure folder permissions are correct (775/755 for folders/subfolders)

More info

• Simple automated GIT Deployment using GIT Hooks
• Git on the Server - Setting Up the Server
• How To Set Up Automatic Deployment with Git with a VPS

• GitHub's SSH key Fingerprints
• Generate SSH key for Mac and add to keychain

Add the following code to a pre-commit hook in the .git/hooks folder of your repo. This will generate html files from markdown content every time just before you commit.

Make sure you add styles inside a <style> block to a file called "styles". See pandoc command in script below.

#!/bin/sh

echo "Converting markdown files to html with Pandoc..."

for file in markdown/*.md 
do
  echo "Processing $file"
  name=$(basename ${file%%.*})
  # echo $name

  pandoc $file -f markdown -t html -o html/$name.html -s -H styles --quiet
  # --quiet = suppress warning messages
  # -s = standalone (full htmlm not snippet)
  # -H = include file in header
done

git add .
echo "... and stage generated html files."
      

• Pandoc User's Guide
• githooks.com
• The automation of documentation

August 2019

Secure Sockets Layer

• Let's Encrypt
• Let's Encrypt community forum
• certbot
• certbot for Nginx on Debian 9 (Stretch)
• certbot-auto for Nginx on Debian 8 (Jessie)
• Test your SSL settings
• Crontab help
• Certificates for localhost
  openssl req -x509 -out localhost.crt -keyout localhost.key \ -newkey rsa:2048 -nodes -sha256 \ -subj '/CN=localhost' -extensions EXT -config <( \ printf "[dn]\nCN=localhost\n[req]\ndistinguished_name = dn\n[EXT]\nsubjectAltName=DNS:localhost\nkeyUsage=digitalSignature\nextendedKeyUsage=serverAuth")

Nginx + Debian Stretch 9

• certbot for Nginx on Debian 9 (Stretch)
• install certbot: sudo apt-get install certbot python-certbot-nginx -t stretch-backports
• create certificate: sudo certbot --nginx
• certificates are found in: /etc/letsencrypt/live
• check certificates: certbot certificates
• renew certificates test:certbot renew --dry-run
• force renew certificates certbot renew --force-renewal
• expand/update certificates certbot certonly --cert-name example.com -d example.org,www.example.org
• revoke/delete certificates certbot revoke --cert-path /etc/letsencrypt/live/CERTNAME/cert.pem
• check crontab: crontab -l
• edit crontab: crontab -e
• restart cron: sudo /etc/init.d/cron restart
• certbot logs: /var/log/letsencrypt/letsencrypt.log
• cron job for auto-renew: 0 0,12 * * * python -c 'import random; import time; time.sleep(random.random() * 3600)' && certbot renew (unconfirmed)

Nginx + Debian Jessie 8

• Forum autorenew question
• certificates are found in: /etc/letsencrypt/live
• wget https://dl.eff.org/certbot-auto
• chmod a+x certbot-auto
• check certificates: /etc/certbot-auto certificates
• might need to add flag:--no-bootstrap
• renew certificates test:sudo /etc/certbot-auto renew --dry-run
• cron job for auto-renew: 0 0,12 * * * python -c 'import random; import time; time.sleep(random.random() * 3600)' && /etc/certbot-auto renew --pre-hook "service nginx stop" --post-hook "service nginx start"

fix ssl labs server rating ubuntu nginx link

August 2019

Daemons

• pm2
• pm2 GitHub source
• pm2 Ecosystem File
• Running Your Python Script with PM2
• Install pm2: npm i -g pm2
• Start a process via custom config: pm2 start app.json

  {
    "name": "name-of-app",
    "script": "name-of-script.js",
    "cwd": "./",
    "watch": true,
    "ignore_watch": ["node_modules", "logs", ".git", "data"],
    "error_file": "./logs/pm2errors.log",
    "out_file": "./logs/pm2out.log",
    "log_date_format": "YYYY-MM-DD HH:mm Z"
  }

• Start a process: pm2 start app.js
• List all processes: pm2 list
• Setup startup script: pm2 startup
• Stop a process: pm2 stop NUM/NAME
• Restart a process: pm2 restart NUM/NAME
• Delete a process: pm2 delete NUM/NAME
• Forever
• Example conf file for Forever
• Running Node Apps with Forever
• See also: forever-service
• Install Forever: npm i -g forever
• List all processes: forever list
• List all configs: forever config
• Start a process: forever start app.js
• Start a process with logs: forever start -l foreverLog.log -o foreverOutput.log -e foreverErrors.log app.js
• Stop a process: forever stop app.js
• Restart a process: forever restart app.js
• Start a process via forever.json: forever start forever.json

  {
      "uid": "name-of-node-app",
      "append": true,
      "watch": true,
      "watchIgnore": ["/absolute/path/logs",
                      "/absolute/path/irrelevant/stuff"],
      "colors": true,
      "script": "server.js",
      "sourceDir": "/absolute/path",
      "logFile": "/absolute/path/logs/forever.log",
      "outFile": "/absolute/path/logs/foreverout.log",
      "errFile": "/absolute/path/logs/forevererror.log"
  }

  or

  {
      "uid": "name-of-python-app",
      "append": true,
      "watch": false,
      "colors": true,
      "script": "wsgi.py",
      "command": "venv/bin/python",
      "sourceDir": "/absolute/path",
      "logFile": "/absolute/path/logs/forever.log",
      "outFile": "/absolute/path/logs/foreverout.log",
      "errFile": "/absolute/path/logs/forevererror.log"
  }

• Add to git post-receive hook: forever restart uid-of-process
• Might need to make sure you run these on the same user.

June 2022

General

• Date and Time Format checker - strftime.net
• Securing a VPS
• Changing a VPS hostname
• Mozilla server sec checker: observatory.mozilla
• Cross origin resource sharing (CORS): enable-cors.org
• get Debian version lsb_release -d
• get Kernel version cat /proc/version
• When upgrading remember to re-install nginx, git, certbot, couch, python 3.8, etc
• Check free disk space in human readable form df -h
• Check what is using space in human readable form du -h
• As above but as summary du -h -s *
• Show running processes: ps -ef

Users

• Chmod Calculator
• Get all users getent passwd
• Get normal users getent passwd {1000..60000}
• Change file permissions chmod XXX file
• Escalate to root user sudo su
• sudo adduser name
• Escalate to "user" user su user
• Change user permissions chown user file
• Change permissions recursively chown -R user:group folder
• Change group permissions chgrp group file
• Change group permissions for all chgrp -R group folder
• Edit access rights nano /etc/ssh/sshd_config
• Restart ssh client after change /etc/init.d/ssh restart
• Add user to sudo group usermod -aG sudo username

NGINX

• /etc/nginx/sites-available
• /etc/nginx/sites-enabled
• /etc/nginx/snippets
• stop nginx: service nginx stop
• restart nginx: service nginx restart
• get nginx status (incl pid): service nginx status
• test settings: nginx -t
• create symlink from sites-available to sites-enabled: ln -s /etc/nginx/sites-available/name /etc/nginx/sites-enabled/name
• Nginx not restarting
• check running processes of nginx: ps aux | grep [n]ginx
• kill process: kill -9 1234 for each process!
• then start nginx again: service nginx start

Screen

• show all running screens: screen -ls
• start new screen with name: screen -S name
• attach to a running session: screen -x
• attach to session name: screen -r name
• detach from a session: Ctrl-a d
• kill a screen: screen -S NUMBER -X quit

Netstat

show ports used: netstat -plutn

Command-line Interfaces

June 2022

General

• Curl Manual
• Open cmd as admin 'Right-click' cmd executable
• My own Custom bash colours GitHub gist
    inclusive: .bashrc, .nanorc, git-prompt.sh, and settings.json
• Bash Cheatsheet
• Overview of nano's shortcuts
• Edit files with nano
• Appending contents of one file to another cat /absolute/path/to/file1 >> ./file2 (file2 being at current pwd)

Customisation

• Bash customisation tool
• Profile settings in Windows Terminal
• Create Vertical or Horizontal Panes in Windows Terminal using Alt Shift + or Alt Shift -
• You can now also change colour and names of tabs in Windows Terminal by right clicking the context menu!
• Close a pane using Ctrl Shift W.
• Customisation config file for new Windows Terminal in Customisation stuff in C:\Users\Fania\AppData\Local\Packages\Microsoft.WindowsTerminal_8wekyb3d8bbwe\LocalState\profiles.json
• Adding Git-Bash to the new Windows Terminal
• 
• How to Customize the zsh Prompt in the macOS Terminal
• touch .hushlogin to hide the last login message in terminal
• Get mac terminal to startup in repo directory: in terminal preferences, in profiles tab, under shell, then startup, tick "run command" and enter this: cd Documents/GitHub && clear
• Get mac terminal to startup in repo directory: in terminal preferences, in profiles tab, under shell, then startup, tick "run command" and enter this: cd Documents/GitHub && clear

Open at location

• 'Shift-right-click' folder to open CMD there
• Use the 'Open-In-Terminal' script

Finding things

• Show all locations of file type -a NAME
• Show location of file or folder which NAME
• Show location of file or folder (if virtualenvwrapper-win is installed) whereis <NAME>

Reloading

• Reload terminal source ~/.bash_profile
• Reload terminal source ~/.bashrc
• Reload cmd SET PATH=%PATH%;C:\CmdShortcuts (unconfirmed)

Running Scripts

• Make sure Execution Policy is set appriately Set-ExecutionPolicy RemoteSigned
• Check Execution Policy with Get-ExecutionPolicy
• See How to allow scripts to run

March 2023

• Show invisible files Command + Shift + .

March 2023

• Installing Jekyll on a mac
• Jekyll Cheat sheet

Jekyll deployment on private server

• Install Jekyll on your local machine and setup the project as you want.
• We want to be pushing only the _site folder with the compiled HTML files to the server, so we don't have to install Jekyll and recompile there, as that just introduces the possibility of errors in the chain of actions.
• Prepare the server infrastructure ready according to instructions above.
• Then on your local machine, you need to make you Jekyll project (from now I will call this the root folder) a git repository.
• You also need to make your _site folder a git repo.
• In the root repo, create a pre-commit file with the following contents:

• 
  #!/bin/sh
  cd absolute/path/to/Jekyll/_site
  date
  date +'%d/%m/%Y'
  var=$date
  git add .
  git commit -m "Changes from $var via auto-commit script."
          

• Make sure this file is executable chmod +x pre-commit
• We also need a pre-push file:

• 
  #!/bin/sh
  cd absolute/path/to/Jekyll/_site
  git push server master
          

• Again, make sure the file is executable, using the same command above chmod +x pre-push
• To make the pre-push file work, we need to make sure the git remote for the _site repo is set correctly.
• So, check it using git remote -v
• If it doesn't list a "server" remote then we need to add it.
• Add the remote inside the _site repo: git remote add server ssh://user@server/full/path/to/site.git
• At this point, the workflow is ready. You can commit work in your root folder and it gets automatically commited as well in your _site folder. When you are ready to push your source code (to GitHub usually) then your compiled code will also be pushed to the private server of your choice.

• SVG Editor
• online editor
• SVG to Base64 converter
• Visual SVG Cheatsheet
• Understanding SVG Paths
• Understanding SVG Transformations/Rotations (see "rotates a group of elements around a specified center of rotation")
• Easings
• Cubic Beziers
• SVG JS library snap.svg
• SVG Background Patterns svgbackgrounds.com
• Broswer fallback svgeezy.js
• SVG Loading Animation
• SVG animations guide
• codepen
• How to create svg elements with Javascript

• Image file type and format guide
• Responsive Images Overview
• Get Pixel Device Ratio: window.devicePixelRatio
• ImageMagick Anatomy of the Command-line
• Convert from png to webp: magick input.png output.webp
• Use 'mogrify' to convert serveral images from jpg to webp: magick mogrify -format webp *.jpg
• Install 'ffmpeg': brew install ffmpeg
• Use 'ffmpeg' to convert from gif to webp: ffmpeg -i file.gif -c vp9 -b:v 0 -crf 40 file.webm
• Use 'ffmpeg' to convert from gif to mp4: ffmpeg -i file.gif -movflags +faststart -pix_fmt yuv420p \ -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" file.mp4
• Use 'ffmpeg' to convert from mov to webm: ffmpeg -i input.mov -c:v libvpx -pix_fmt yuva420p -b:v 2M -auto-alt-ref 0 output.webm
• Use 'ffmpeg' to convert from mov to mp4: ffmpeg -i input.mov -vcodec h264 -acodec mp2 output.mp4

• MDN CSS Code Examples used in MDN articles and demos
• A truly monstrous async web chat using no JS whatsoever on the frontend CSS-Only Chat
• Create Diagonal Layouts Like It's 2020
• CSS Gradient Animator
• Animated Hover Gradient Demo
• mix-blend-mode: difference for automatic contrast colour for background

FlexBox

• darek kay cheatsheet
• malven cheatsheet
• TEST CSS FLEXBOX RULES (found this to be slightly buggy sometimes)
• Build awesome user interfaces with CSS flexbox Flexbox Patterns by CJ Cenizal

Grid

• Game to learn CSS Grids CSS Grid Garden
• grid by example
• flexible grids
• malven cheatsheet
• Jen Simmons Mondrian Grid Demo

Tools

• Delete unused CSS rules Purge CSS

SASS

• Reference SASS
• How to setup Sublime
• Edit scss file and then Command+B to compile
• Edit init.js file to use sass or css files; or if scripts are disabled edit individual import statements in html files

• debug several variables in one console log console.log({x,y,z});
• equivalent to doing console.dir(x); but for each x, y, and z
• Professor Frisby's Mostly Adequate Guide to Function Programming with JavaScript
• You Don't Know JS - A book series on JavaScript YDKJS by Kyle Simpson
• Document fragment vs innerHTML vs looped appendChild jsperf.com
• Callbackhell

Node

• Official Node.js website
• npm init to create package.json
• npm i XYZ or npm install XYZ to install XYZ into local "node_modules" folder
• node app.js` or node app` to run app
• npm rm XYZ to remove XYZ
• npm uninstall XYZ to remove XYZ
• process.stdout.write("Downloading " + data.length + " bytes\r"); to print to console in same line as before...
• process.stdout.write("Downloading " + data.length + " bytes\033[0G"); to print to console in same line as before...

Cross references - see also Pandoc & Git Hooks.

• Dillinger: For creating, editing and exporting markdown files in html.

March 2020

General Guides / Checklists / Roadmaps

• General Web.dev Guide to Learn CSS!
• Browser Strangeness a guide for live testing CSS browser hacks
• Code prettifier prettier.io
• Code minifier Terser e.g.:
  terser meta/script.js -c -m -o meta/script.min.js
• Create a Terser pre-commit that has the above line and also git adds the minified script!
• A resource of stuff that's Free for developers
• Front End Checklist
• Web skills overview see source on GitHub
• Developer Roadmaps at roadmap.sh and dev roadmap
• Progressive Web App Demo: What PWA can do today
• Things you can do with a browser in 2020 Browser 2020
• Writing todos todo.txt
• Microsoft Frontend Bootcamp
• No Design Development: A collection of tools for developers who have little to no artistic talent.

Tools / Resources

• RegExR Regular Expression Tester
• Learn CSS Grid Learn CSS Grid layout helper
• ColorSpace Generate nice Color Palettes & Gradients
• Box Shadow Generator Helps generate box shadows (and other things apparently)
• CSS Gradient Generator Helps generate css gradients (and all sorts of other things!)
• handbrake.fr open source video editor/trandcoder. lightweight and easy enough to use. multi platform too.
• EZGIF.com Video cropper
• online-video-cutter.com Video cutter and cropper
• AllTheFreeStockCollection of free media resources
• Table Generator: For creating, editing tables in Latex, html, markdown, etc.

Service Workers

• serviceworkers

Intersection Observers

• see caching strategies here

Jokes

• No Code: The best way to write secure and reliable applications. Write nothing; deploy nowhere.

Search Engine Optimasation (SEO)

• metatags.io
• A free guide to HTML5 <head> elements
• Google Search Console / Webmaster
• Google Mobile Friendly Test

Favicons

• Favicon Generator
• Fontawesome Favicon Generator
• Maskable.app Editor for Chrome/Android maskable icons

Icons

• SYMBLWHEN TEXT IS NOT ENOUGH
• SVG to URL for CSS converter
• Tablericons
• Fontello Icon Fonts Generator
• Icomoon SVG icons
• HeroIcons high-quality SVG icons for UI development
• Zondicons free premium SVG icons
• CSS GG Minimalistic icon library Designed by code. Customizable & Retina-Ready icons — entirely built in CSS.

Fonts

• Golden Ratio Typography Calculator for optimal font sizes, line heights and line widths.

Images

• Remove BG Remove image background online
• Image Optimisation
• Ascii-Generator (image or text to ascii convertor)

Responsive Web Design

• Responsive Logos

Printing

• Print CSS stylesheets

Social / Sharing / Structured Data

• Open Graph
• Open Graph Checker with previews and template code
• Google Structured Data Test
• Google Structured Markup Test
• JSON Linked Data
• JSON LD Playground
• RDFa Linked Data
• RDFa Playground
• RDFa Lite Documentation

Interesting Sites

• Seeing Theory A visual introduction to probablity and statistics.
• Robert a.k.a. Robin

January 2023

• WebHint User Guide

October 2017

• Texcount fix, Perl, Texcount.Perl - Comment out section on win stuff at top
• Table Generator: For creating, editing tables in Latex, html, markdown, etc.
• Latex Equation Editor: For creating, editing Latex equations.

March 2020

CouchDB

• couch daemon sudo sv status | stop | start couchdb
• find couchdb: localhost:5984
• couchdb GUI: localhost:5984/_utils
• edit config: nano /opt/couchdb/etc/local.ini
• restart couch: /etc/init.d/couchdb restart
• couch backup files: /var/lib/couchdb
• CouchDB Docs (Official Stable)
• CouchDB Nano for Node
• CouchDB Best Practices
• Bulk updates might need an increase in request body size due to error 413. add a line in nginx config file for couch domain: client_max_body_size 100M;
• files to backup are in /usr/local/var/lib/couchdb
• CouchDB Debian Buster
• CouchDB Nginx conf
• JSONBox.io free HTTP based JSON storage. See docs.

MariaDB

• How to connect: sudo mysql -u USERNAME -p (enter sudo pw first, and then the mysql user pw)

October 2017

• Vibrancy Extension to add opacity effect. Careful, this is partly broken atm (causes drag lag)
• Using SSH Keys in Visual Studio Code on Windows

Extensions

• Manage published extensions
• Extension Tutorial Hello World
• Publishing extensions with vsce
• vsce login user-name
• vsce package
• vsce publish minor/major
• TextMate Theme Generator

October 2017

• Haskell.org
• GHCi Lambda Prompt Tutorial
• Find "ghci.conf" file and enter: :set prompt "\x03BB> "
• Haskell Syntax
• Fixity

October 2017

WordNet

• Reference WordNet Interface for NLTK
• Import wordnet from nltk.corpus import wordnet as wn
• Loop through lemmas for l in synset.lemmas():
• Lemma name as string str(lemma.name())
• Antonyms synset.lemmas()[0].antonyms()
• Install NLTK 3.0.0b1 pip install -Iv https://pypi.python.org/packages/source/n/nltk/nltk-3.0.0b1.tar.gz#md5=f3f67fcda9bc76f57d91811a572c36e4

Data

• Reference NLTK Data
• Install nltk data: (1) python
• Install nltk data: (2) import nltk
• Install nltk data: (3) nltk.download()
• or nltk.download('stopwords') and nltk.download('wordnet')
• add path of nltk_data folder to system path
• or better yet add it to the local repo and code:
• import nltk
• nltk.data.path.append("PATH/TO/nltk_data")

April 2020

See also info on screen

Install Python 3.8

• How to Install Python 3.8 on Ubuntu, Debian and LinuxMint
• Check current version python -V
• Check current version pip -V
• Check current version python3.8 -V
• Create venv python3.8 -m venv venv
• Activate venv source venv/bin/activate

Random Useful Links

• Date and Time Format checker - strftime.net
• How To Process Incoming Request Data in Flask
• Ascii Art library

Python WSGI ('Whiskey') Server

• Waitress documentation
• Set up a "wsgi.py" file:

  
  from app import app
  from waitress import serve
  if __name__ == "__main__":
      serve(app, host='127.0.0.1', port=8001)
  
  

• Then run server using python wsgi.py
• A Waitress & A Flask Running Flask Web Framework from within a Waitress WSGI Server
• Exposing your data science project to the world — Flask with Waitress!

Switch the /usr/bin/python link to point to current python link

• cd /usr/bin
• rm -f python
• ln -s /Library/Frameworks/Python.framework/Versions/Current/bin/python python

Pip

• Reference Pip
• Upgrade pip pip install -U pip
• Upgrade pip python -m pip install -U pip
• Install NAME pip install NAME
• Install NAME version 1.0.4 pip install NAME==1.0.4
• Install specific version pip install -Iv Link-to-tar.gz
• Uninstall NAME pip uninstall NAME
• Show installed packages pip list
• Show out-of-date packages pip list --outdated
• Upgrade NAME pip install --upgrade NAME
• To freeze local requirements pip freeze --local > requirements.txt
• To freeze requirements pip freeze > requirements.txt
• To install from requirements pip install -r requirements.txt

Virtualenv

• Python 3 reference Virtualenv
• Old reference Virtualenv
• Python 3: create a new venv python -m venv NAME
• Old: Create a new venv virtualenv NAME
• Activate NAME . NAME/bin/activate
• Activate NAME NAME\scripts\activate
• Deactivate deactivate

Virtualenvwrapper

• Reference Virtualenvwrapper-win
• Reference Virtualenvwrapper
• Make a new venv mkvirtualenv ENVNAME
• List all virtualenvs workon or lsvirtualenv
• Activate a virtualenv workon ENVNAME
• Deactivate virtualenv deactivate
• Remove virtualenv deactivate and then rmvirtualenv ENVNAME
• Bind ENVNAME to project setprojectdir <project_path>
• Bind ENVNAME to project setvirtualenvproject [virtualenv_path project_path]

Virtualenvwrapper-win not finding virtualenv-script.py:

• Edit C:\PythonXY\scripts\mkvirtualenv.bat with the following changes on lines 47, 48
• Line 47 virtualenv.exe %*
• Line 48 REM python.exe "%PYHOME%\Scripts\virtualenv-script.py" %ARGS%

Paths

• C:\Python27;C:\Python27\Scripts;
• Set folder for virtualenvs export WORKON_HOME=$HOME/.virtualenvs
• Set folder for virtualenv projects export PROJECT_HOME=$HOME/Desktop/PhD_Offline/Git_code
• source /Library/Frameworks/Python.framework/Versions/2.7/bin/virtualenvwrapper.sh
• PATH="/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}"
• PYTHONPATH="/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/:${PYTHONPATH}"
• export PATH

October 2017

• Get battery report: powercg /batteryreport

• Dashboard Login
• Install the toolbelt
• Python Flask Guide
• Login heroku login (needs authenticator code)
• Git Push git push heroku master only in git bash !
• make sure reqs.txt is called requirements.txt

October 2017

• Forum Help
• Uncheck preference located under Edit > Preferences > Documents "Open Tool pane for each document"