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+# Spooky shell expansions
+
+*Let me tell you a story to chill the bones*  
+*One that happened to me long time ago*
+
+*It was a dark and cold night*  
+*Plague spreading outside*  
+
+*In the summer of '20*  
+*I was hacking alone*  
+*A little program I wanted to install*  
+*Not in `/usr/local`, but in my `$HOME`*
+
+*Young and foolish I was*  
+*As I changed the Makefile*  
+*`PREFIX = ~/.local`*  
+*And then `make` I typed*
+
+*That did not work, of course*  
+*And I soon realized*  
+*A new folder named `~`*  
+*Had shown up in my `$HOME`*
+
+*"How foolish I was" - I thought*  
+*"That must not work,*  
+*A Makefile won't expand*  
+*As a shell script sure does"*
+
+*A folder named `~`*  
+*When left alone,*  
+*Is no reason to fear*  
+*Does no harm at all*  
+
+*But care must be taken*  
+*And alas, I did not*  
+*Soon to learn the hard way*  
+*What a `~` gives, a `~` takes away*
+
+*"Let this be undone!" I exclaimed*
+
+*As I typed*
+
+*Four little bytes*  
+
+```
+$ rm ~
+```