Cygwin

Troubleshooting Cygwin

• Look for multiple copies of the cygwin DLL cygwin1.dll. Removes all copies that are not in the cygwin install directory (usually c:\cygwin).
• List of interfering software:
  • NoMachine NX Client - installs a custom version of the Cygwin DLL which can cause multiple interferences:
    • Cygwin crashes when multiple instances are launched.
    • Running cygwin commands (like ls) in a NT command shell when another instance of cygwin is running creates application error (Memory cannot be "read").
    • setup.exe fails because it runs several instances of bash.
  • SysInternals' Process Monitor
    • All back-quoted commands or $() commands in scripts fail until Windows is restarted

Adding Users

Create the user in Windows User Management first, then use command mkpasswd to add it to Cygwin environment.

$ net user <username> <password> /add /yes
$ net localgroup <an_local_group> <username> /add
$ mkpassd -l -u <username> >> /etc/passwd