Mon Mar 2 14:06:22 EST 2015

Cygwin chmod doesn't work

Apparently when you copy files that are not created by cygwin, a
problem can occur leading to inability to change permissions.

My id_rsa had 670 permissions and chmod didn't do anything.  It was
copied from somewhere else.  I fixed it by

- taking a file that was created by cygwin and copy it to id_rsa
- cat /Users/tom/.ssh/id_rsa >id_rsa
- chmod 600 id_rsa

[1] http://stackoverflow.com/questions/9561759/why-cannot-chmod-in-cygwin-on-windows-8-cp