Cygwin troubleshooting

Common Problems

rebase

Almost all issues related to cygwin can be resolved by rebasing. You can do it the quick/dirty way:

C:/cygwin/bin/dash.exe
/bin/rebaseall

Or the full proper way:

- Open Task Manager and close any processes that look to be Cygwin related.
- Open C:\Cygwin\bin in Windows Explorer
   - Verify that dash.exe, ash.exe, rebase.exe, and rebaseall exist in this folder
      - If any of them are missing, re-run Cygwin setup and select the dash, ash, and rebase packages

    - right-click your C:\Cygwin folder, uncheck Read-only (if its checked), and press OK.
      - When an error about not being able to switch some files comes up, select "Ignore All". Wait for this process to complete.

    - Browse to C:\Cygwin\bin in Windows Explorer
    - Right click dash.exe and click "Run as Administrator". A command Prompt should appear with nothing but a $
    - Type /usr/bin/rebaseall -v, hit enter, and wait for the process to complete.
        - If you get errors about Cygwin processes running, try Step 1 again. If that still doesn't work, Restart your computer into safe mode and try these steps again.
        - A commenter noted that, depending on your settings, you may have to type cd /usr/bin && ./rebaseall -v instead.
    - Try opening Cygwin again.

http://stackoverflow.com/questions/9300722/cygwin-error-bash-fork-retry-resource-temporarily-unavailable

http://cygwin.wikia.com/wiki/Rebaseall