----------------------------------------------------
> I haven't had a physical modem for 20 or so years but when I did I used
> mgetty on linux. Do you see anything like that for your OS?
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no mgetty :(

I'm looking for a agetty for macOS , and understand how to bypass security
checks of Catalina 

maybe this:
https://github.com/karelzak/util-linux/blob/master/term-utils/agetty.c
but i'm getting errors on compile

/Applications/Xcode.app/Contents/Developer/usr/bin/make  all-recursive
Making all in po
make[2]: Nothing to be done for `all'.
  CCLD     libblkid.la
ld: warning: -undefined dynamic_lookup is incompatible with dyld share cache
ld: -undefined dynamic_lookup cannot be used to find '_libintl_gettext' in
dylib in dyld shared cache for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [libblkid.la] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
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