Command Refactoring: Add alias

slides.org

@@ -795,7 +795,7 @@ And that's why I've dragged you through this drawn-out example---to
 
 
 ** DEVOID A New Perspective [0/16]
-*** Perspective Topics [12/13]                                   :noexport:
+*** Perspective Topics [13/13]                                   :noexport:
 - [X] What if I could walk away and get a coffee, play with the kids,
       come back and have it done for me?
   - Emphasize how users familiar with the tools I haven't yet mentioned
@@ -828,6 +828,7 @@ And that's why I've dragged you through this drawn-out example---to
 - [X] Now we have duplication: URL in two places
   - Introduce variables
 - [X] Eliminate the temporary file entirely using a pipe
+- [X] Alias =fetch-url= for =wget -qO-=.
 - [X] Introduce the Unix philosophy
 - [ ] Now script discovering what pages contain a certain word [0/4]
   - [ ] Mention previous example of being emailed a list of URLs.  Rather
@@ -1457,9 +1458,10 @@ But this is a hefty command to have to modify each time we want to try a
 :BEAMER_env: fullframe
 :END:
 
-#+BEAMER: \begin{onlyenv}<5>
+#+BEAMER: \begin{onlyenv}<6>
 #+BEGIN_SRC sh
 
+
 $ wget --quiet -O speakers.html \
        https://libreplanet.org/2019/speakers/ \
     && grep --quiet 'free software' speakers.html \
@@ -1470,6 +1472,7 @@ $ wget --quiet -O speakers.html \
 
 #+BEAMER: \begin{onlyenv}<1>
 #+BEGIN_SRC sh
+
 $ URL=https://libreplanet.org/2019/speakers/
 $ wget --quiet -O speakers.html \
        "$URL" \
@@ -1481,6 +1484,7 @@ $ wget --quiet -O speakers.html \
 
 #+BEAMER: \begin{onlyenv}<2>
 #+BEGIN_SRC sh
+
 $ URL=https://libreplanet.org/2019/speakers/
 $ wget -qO speakers.html \
        "$URL" \
@@ -1492,6 +1496,7 @@ $ wget -qO speakers.html \
 
 #+BEAMER: \begin{onlyenv}<3>
 #+BEGIN_SRC sh
+
 $ URL=https://libreplanet.org/2019/speakers/
 $ wget -qO - \
        "$URL" \
@@ -1501,14 +1506,27 @@ $ wget -qO - \
 #+END_SRC
 #+BEAMER: \end{onlyenv}
 
-#+BEAMER: \begin{onlyenv}<4->
+#+BEAMER: \begin{onlyenv}<4>
 #+BEGIN_SRC sh
+
 $ URL=https://libreplanet.org/2019/speakers/
 $ wget -qO - "$URL" \
     | grep -q 'free software' || echo "$URL" >> results.txt
 
 
 
+#+END_SRC
+#+BEAMER: \end{onlyenv}
+
+#+BEAMER: \begin{onlyenv}<5->
+#+BEGIN_SRC sh
+$ alias fetch-url='wget -qO-'
+$ URL=https://libreplanet.org/2019/speakers/ \
+  fetch-url "$URL" \
+    | grep -q 'free software' || echo "$URL" >> results.txt
+
+
+
 #+END_SRC
 #+BEAMER: \end{onlyenv}
 
@@ -1562,6 +1580,9 @@ We then connect standard out of =wget= to the standard in of =grep= using a
 
 Now that we've freed up some space,
   let's reformat this slightly to be a bit more readable.
+Any that =wget= command looks a bit cryptic.
+How about we define an alias so that it looks a bit more friendly,
+  and then we can stop worrying about what it does?
 
 And now here's the original command we started with,
   and where we're at now.