Does anyone know why I get this error when I try to make upload? I'm trying to run a program I downloaded from GitHub on my Arduino UNO R3 using Mac OS.
I don't know anything about Xcode or Macs. The grep error indicates (to me) that the regular expression that is used is invalid.
If you don't come right on this forum, you might have more success if you ask on https://developer.apple.com/forums/tags/xcode.
PS: this is the only Mac that I ever played with.
Could you be more specific?
You are more likely to get an answer on a linux or unix forum. I use it but I cannot read your screen shot.
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