[lutusp]

> /bin/bash is on literally every machine I ever touch. It is on every Debian machine. It is on every Ubuntu machine. It is on every OS X machine. It is on every Windows (!) machine.

Yes. Yes. Yes. Yes. No (unless Cygwin is installed).

[eropple]

/bin/bash is on literally every machine I ever touch. Did you miss the operative phrase?

(I have init scripts for Cygwin, too, because I need Windows but life is too short for CSRSS.)

[lutusp]

> /bin/bash is on literally every machine I ever touch. Did you miss the operative phrase?

You intended that subjunctive clause to apply to all the sentences, an intent I missed. My mistake. :)

This may soon become a tempest in a teapot, as patched Bash versions are now appearing. I just patched all my machines.