Bash and github README.md files don’t always play nice.

In theory, you can cut-and-paste bash commands right into your command prompt. But if you double-click the README.md line, you select not only the command, but also that $ too.

So the following incredibly helpful README.md line

$ yarn add count-interval

becomes this

> $ yarn add count-interval
bash: $: command not found

Who needs this hassle? Just put an executable file named $ somewhere in your path, with the contents "$@". On a mac you can try this in /usr/local/bin/ like this:

echo '"$@"' > /usr/local/bin/$; chmod a+x /usr/local/bin/$

(To make it easier, I left off the obligatory $ this time.)

Now you can leave that annoying $ in!

> $ yarn add first-interval
yarn add ...

Why a file? Why not just an alias? Because bash says you can’t.

> alias '$="$@"'
bash: alias: `$': invalid alias name