fix a slew of broken links

mattmakai · mattmakai · commit 5a0518b766d5 · 2021-06-17T07:00:08.000-04:00
diff --git a/content/pages/01-introduction/05-enterprise-python.markdown b/content/pages/01-introduction/05-enterprise-python.markdown
@@ -70,7 +70,7 @@ best maintained and fully featured pieces of code for any language.
 
 Meanwhile, some of the traditional enterprise software development languages 
 such as Java have languished due to underinvestment by their major corporate 
-backers. When [Oracle purchased Sun Microsystems in 2009](http://www.oracle.com/us/corporate/press/018363)
+backers. When [Oracle purchased Sun Microsystems in 2009](https://www.oracle.com/corporate/pressrelease/oracle-buys-sun-042009.html)
 there was a long lag time before Java was enhanced with new language features
 in Java 7.  Oracle also 
 [bundles unwanted adware with the Java installation](http://www.engadget.com/2015/03/06/java-adware-mac/),
diff --git a/content/pages/01-introduction/06-community.markdown b/content/pages/01-introduction/06-community.markdown
@@ -77,7 +77,7 @@ resources provide perspective on offline events like
   and 
   [PyCon US 2016](http://www.dreisbach.us/blog/pycon-2016/). There are
   many other retrospectives for other 
-  [community-led conferences such as EuroPython](http://www.artima.com/weblogs/viewpost.jsp?thread=261930).
+  [community-led conferences such as EuroPython](https://www.artima.com/weblogs/viewpost.jsp?thread=261930).
   These summaries can be a great way to get a slice of the experience
   before purchasing a ticket and booking a trip.
 
@@ -112,16 +112,11 @@ the community.
   provides a starter page with links to community-run newsletters, resources
   and conferences.
 
-* There are many large active online communities on 
-  [Reddit](https://www.reddit.com/r/python) and
-  [IRC channels](https://freenode.net/) such as #python, #python-dev
-  and #distutils.
-
 * The Python community has a concept known as "Benevolent Dictator For Life" 
   that may appear odd to newcomers. Essentially, Guido Van Rossum created
   the language and still has the ability to decide community arguments one
   way or the other. This post on the 
-  [origin of BDFL](http://www.artima.com/weblogs/viewpost.jsp?thread=235725)
+  [origin of BDFL](https://www.artima.com/weblogs/viewpost.jsp?thread=235725)
   has more context about Guido's role.
 
 * [Python Community and Python at Dropbox](https://talkpython.fm/episodes/show/30/python-community-and-python-at-dropbox)
diff --git a/content/pages/02-development-environments/15-application-dependencies.markdown b/content/pages/02-development-environments/15-application-dependencies.markdown
@@ -39,9 +39,6 @@ all yourself. A few of the best collections of Python libraries are
   shows the open source Python projects trending today, this week, and this 
   month.
 
-* This list of [20 Python libraries you can’t live without](http://freepythontips.wordpress.com/2013/07/30/20-python-libraries-you-cant-live-without/)
-  is a wide-ranging collection from data analysis to testing tools.
-
 * Wikipedia actually has an extensive 
   [page dedicated to Python libraries](http://en.wikipedia.org/wiki/List_of_Python_software) 
   grouped by categories.
@@ -224,10 +221,6 @@ developers.
   dependency management tools including newer ones such as pipenv and
   Poetry.
 
-* Occasionally arguments about using Python's dependency manager versus
-  one of Linux's dependency managers comes up. This provides
-  [one perspective on that debate](http://notes.pault.ag/debian-python/).
-
 * [Open source trust scaling](http://lucumr.pocoo.org/2016/3/24/open-source-trust-scaling/)
   is a good piece for the [Python community](/python-community.html) 
   (and other programming communities) that is based on the 
diff --git a/content/pages/02-development-environments/18-source-control.markdown b/content/pages/02-development-environments/18-source-control.markdown
@@ -194,9 +194,9 @@ implementation.
   free online version of the O'Reilly 
   [Version Control with Subversion](https://www.amazon.com/dp/B002SR2QIW/) book.
 
-* [How to use Subversion (SVN)](https://deveo.com/svn-tutorial/) lays out
-  the basic concepts and provides the first few steps for getting started
-  tracking files.
+* [How to Host SVN Repositories](https://www.perforce.com/blog/vcs/how-host-subversion-svn) 
+  lays out the basic concepts and provides the first few steps for getting 
+  started tracking files.
 
 * [10 Most Used SVN Commands with Examples](http://www.thegeekstuff.com/2011/04/svn-command-examples/)
   is a good refresher list if you've used SVN in the past but it has been 
diff --git a/content/pages/02-development-environments/19-git.markdown b/content/pages/02-development-environments/19-git.markdown
@@ -174,10 +174,6 @@ workflow. These resources will come in handy for specific Git subjects.
   interactive mode or on its own with `git bisect run` to find the
   problematic code commit that needs to be fixed.
 
-* [How Microsoft uses Git](https://docs.microsoft.com/en-us/azure/devops/learn/devops-at-microsoft/use-git-microsoft)
-  gives a high-level overview of their repository structure and hosting 
-  at the extremely large scale organization.
-
 * [GitTips](https://git.wiki.kernel.org/index.php/GitTips) is a list of 
   pro tips to clean up common issues and how to dive through Git history
   to find specific text.
diff --git a/content/pages/04-web-development/28-celery.markdown b/content/pages/04-web-development/28-celery.markdown
@@ -11,7 +11,7 @@ meta: Celery is a task queue for executing work outside a Python web application
 implementation for [Python web applications](/web-development.html) used
 to asynchronously execute work outside the HTTP request-response cycle.
 
-<a href="http://www.celeryproject.org/" style="border:none"><img src="/img/logos/celery.png" alt="Celery task queue project logo." class="shot" width="100%"></a>
+<a href="https://docs.celeryproject.org/" style="border:none"><img src="/img/logos/celery.png" alt="Celery task queue project logo." class="shot" width="100%"></a>
 
 <div class="well see-also">Celery is an implementation of the <a href="/task-queues.html">task queue</a> concept. Learn more in the <a href="/web-development.html">web development</a> chapter or view the <a href="/table-of-contents.html">table of contents</a> for all topics.</div>
 
diff --git a/content/posts/160626-django-gunicorn-mint-linux-17.markdown b/content/posts/160626-django-gunicorn-mint-linux-17.markdown
@@ -3,7 +3,7 @@ slug: python-3-django-gunicorn-linux-mint-17
 meta: A step-by-step walkthrough on configuring Linux Mint 17.3 with Python 3, Django and Green Unicorn (Gunicorn).
 category: post
 date: 2016-06-26
-modified: 2016-07-22
+modified: 2021-06-17
 newsletter: False
 headerimage: /img/160626-mint-django-gunicorn/header.jpg
 headeralt: Django, Green Unicorn and Linux Mint logos. Copyright their respective owners.
@@ -32,7 +32,7 @@ their current versions as of June 2016 are:
 * [Python](/why-use-python.html) version 
   [3.5.1](https://www.python.org/downloads/release/python-351/)
 * [Django](/django.html) web framework version 
-  [1.9.7](https://docs.djangoproject.com/en/1.9/releases/1.9/)
+  [1.9.x](https://pypi.org/project/Django/1.9.13/)
 * [Green Unicorn (Gunicorn)](/green-unicorn-gunicorn.html) version 
   [19.6](http://docs.gunicorn.org/en/stable/news.html)
 
