Install xcode-select bug

[Peneheals]

Check and wait until the dialog prompt process finished. Maybe (xcode-select --install) || err is enough?

[Peneheals]

also check the "reinstall" bug: xcode-select: error: command line tools are already installed, use "Software Update" to install updates

related:

• https://stackoverflow.com/questions/15371925/how-to-check-if-command-line-tools-is-installed/15371967#:~:text=Just%20enter%20in%20gcc%20or,and%200%20if%20they%20do.
• https://macops.ca/installing-command-line-tools-automatically-on-mavericks/
• https://github.com/Homebrew/install/blob/52237ea74f41d2456a5b1bd3e4c2b0cb94485c3c/install#L118

[Peneheals]

Check and wait until the dialog prompt process finished. Maybe (xcode-select --install) || err is enough?

it looks so hard (or impossible) to do this I'm gonna close it. I also tested that the brew installer warns me to finish the xcode process.