I use Cygwin as my main interface on Windows, while my work machine is Linux. I've been using Linux since 96. There is very little functional difference between terminal-based userland on Cygwin and Linux, with the sole exception of speed; Cygwin syscalls are slow, and forking is to be avoided in shell scripts where possible.
Cygwin is a better Unix than OOTB OSX owing to not being stuck on GPL 2.
I use Cygwin as my main interface on Windows, while my work machine is Linux. I've been using Linux since 96. There is very little functional difference between terminal-based userland on Cygwin and Linux, with the sole exception of speed; Cygwin syscalls are slow, and forking is to be avoided in shell scripts where possible.
Cygwin is a better Unix than OOTB OSX owing to not being stuck on GPL 2.