How to run this command with cygwin

Question

How can I run this Unix command . ./filename.sh with cygwin?

Answer 1

Open up your Start menu, select the Cygwin submenu and click on Cygwin Bash Shell. That gives you a UNIX-oriented shell in which it'll be a lot easier to do UNIXy type things, like running whatever script you want.

Answer 2

Actually that command is not so much bound to a platform (if you allow that term for Cygwin) as it is a shell intrinsic/builtin. In Bash (to my knowledge default shell in Cygwin), for example, those two lines are equivalent:

. ./filename.sh
source ./filename.sh

All variables, exported or not, will be integrated into your current shell instance (unless enclosed in parentheses, i.e. assignments done in subshells).