xjcoan

Example done from an upgrade from 12.5 to 15.4

App is a Rails app, the default container user has limited access and no direct sql/psql access

• build the image with current pg version & docker compose up
• docker exec -it <NAME_OF_CONTAINER> pg_dump <NAME_OF_PRIMARY_DB> > db.out -U postgres
  • had issues doing pg_dumpall; wondering if the default postgres database interferred?
• backup the data from the volume. I store in a tmp folder in the repo.
• clear the folder your data is saved in or delete the volume
• update the postgres version in docker compose, run docker compose build & up

xjcoan

from pytube import Playlist
from pytube import YouTube
import re

def download_vids():
    playlist = Playlist("PLAYLISTURL")
    playlist._video_regex = re.compile(r"\"url\":\"(/watch\?v=[\w-]*)")
    for url in playlist:
        print(url)
        yt = YouTube(url)

xjcoan

#kill active containers
docker kill $(docker ps -q)

# remove unused/old images
docker rmi $(docker images -f dangling=true -q)

xjcoan

// Dismiss all updates in Blackboard (on the update finder page)
// Best used when you let the updates pile up

// Find all dismiss buttons on the page and click them
let dismissButtons = document.querySelectorAll('[id*="dismiss_"]')
for (let i = 0; i < dismissButtons.length; i++) {
  dismissButtons[i].click()
}

xjcoan

Download the latest version of JUnit here : <https://github.com/junit-team/junit4/wiki/Download-and-Install>
(I place mine in ~/java/ for this example)

Add the following lines to terminal conf. file (~/.zshrc)
`export JUNIT_HOME="$HOME/java"`
`export PATH="$PATH:$JUNIT_HOME"`
`export CLASSPATH="$CLASSPATH:$JUNIT_HOME/junit-4.12.jar:$JUNIT_HOME/hamcrest-core-1.3.jar"`

Alias junit in zshrc: `alias junit="java org.junit.runner.JUnitCore"`