Composer doesn\'t run correctly in Cygwin if you try to install it \"globally\".
Putting composer.phar into /usr/local/bin/composer, then trying to run it will result in
What I did (very simple):
composer
you will see something like Could not open input file: /c/route/to/your/composer/installation/bin
composer='composer.bat'
on your bash profile or bashrc or whateverI'm running Windows 8.1