macOS Referring to the directory that a script is running from?

[AquaMethod]

I'd like to create a bash script that would live on a USB thumb drive and copy over some files from that same USB drive, onto the Mac it's plugged into. How can I refer to the path the script is executing from, even if the name of the drive has changed or it's not mounted under /Volumes ?

I suppose it's possible to mess around with the $0 parameter, but will that work even if the script is created as a .command file, and run by the Finder?

 

[mkrishnan]

It doesn't matter how the script is executed -- dirname should work (pwd may not). See:

http://stackoverflow.com/questions/59895/can-a-bash-script-tell-what-directory-its-in

 

[AquaMethod]

Ah, that makes sense. (Not sure why I didn't think to search SO first...thanks for doing so)

So the cleanest solution would probably be

scriptPath=`dirname $0`

And then use $scriptPath from there one? Seems like that'll work.

 

[mkrishnan]

Yeah, something like that should work just fine.