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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 ~
```
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