Shell script detecting running in Cygwin

Question

Is there a simple way to check if a script is running in Cygwin. We have a script that calls a utility that expects the paths passed to be windows so if we're in Cygwin we have to convert the paths to windows paths.

Answer 1

You can use the uname utility. From uname(1):

-o, --operating-system
print the operating system

Example code:

if [ `uname -o` = "Cygwin" ]
then
    # Cygwin specific stuff
else
    # Other UNIX (Linux, etc.) specific stuff
fi

Answer 2

This works with ksh and bash.

#!/bin/ksh
case "$(uname -s)" in
    CYGWIN*) echo This is Cygwin ;;
    *) echo This is not Cygwin ;;
esac