Cygwin
======
* http://www.cygwin.com/
* Mirror with many old versions (not setup.ini)
http://ftp.eq.uc.pt/software/pc/prog/cygwin
* Local snapshots:
http://isabelle.in.tum.de/cygwin (Isabelle2012)
http://isabelle.in.tum.de/cygwin_2013 (Isabelle2013)
http://isabelle.in.tum.de/cygwin_2013-1 (Isabelle2013-1 and Isabelle2013-2)
http://isabelle.in.tum.de/cygwin_2014 (Isabelle2014)
http://isabelle.in.tum.de/cygwin_2015 (Isabelle2015)
http://isabelle.in.tum.de/cygwin_2016 (Isabelle2016)
http://isabelle.in.tum.de/cygwin_2016-1 (Isabelle2016-1)
http://isabelle.in.tum.de/cygwin_2017 (Isabelle2017)
* Quasi-component: "isabelle build_cygwin" (as Administrator)
* SSH server:
- run Cygwin terminal as Administrator
- run ssh-host-config
StrictMode: yes
privilege separation: yes
new local account 'sshd': yes
sshd as a service: yes
different name (than cyg_server): no
new privileged account cyg_server: yes
- mkpasswd -l > /etc/passwd
mkgroup -l > /etc/group
passwd -R USER