Cygwin Tips and Tricks
What is Cygwin?
Cygwin is:
- a large collection of GNU and Open Source tools which provide functionality similar to a Linux distribution on Windows.
- a DLL (cygwin1.dll) which provides substantial POSIX API functionality.
What is it not?
Cygwin is not:
- a way to run native Linux apps on Windows. You must rebuild your application from source if you want it to run on Windows.
- a way to magically make native Windows apps aware of UNIX® functionality like signals, ptys, etc. Again, you need to build your apps from source if you want to take advantage of Cygwin functionality.
Post-Installation
Your default group
For some reason, Cygwin sets my user up with the group "None". Run a Cygwin Bash Shell (or click on the Cygwin desktop icon), and cd to /etc. In the /etc/group file, find the id for the Users group (in the below screenshot, it is shown as 545). Then edit (e.g. using vi), the /etc/passwd file and change the groupid for your user entry to the Users group id (in the below screenshot, in the line beginning with "Tony:", I would change the 513 to 545).
awc 2010-03-26 13:24:43
fatal error: unable to remap some.dll to same address as parent
I got this after installing cygwin when I tried to run subversion (svn). The fix (found here) is as follows:
- Close out of Cygwin (and all cygwin processes).
- Open a Windows command prompt (start -> run - > type
cmdor on vista : start -> typecmdin the start search window) - Go to your cygwin bin directory. For me it is
c:\cygwin\bin. - Type
ash - Type
/usr/bin/rebaseall - Resolve any errors (I had no errors or warnings)
- Reboot…and you should be good.
I'm not sure if the reboot is needed; but, this is Windows we're talking about so just go ahead and reboot.