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From: Thorsten Kampe <thorsten AT thorstenkampe DOT de>
Subject:  Re: Run a Cygwin (X) app from a DOS command line
Date:  Wed, 31 Dec 2008 15:13:01 +0100
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* John Emmas (Wed, 31 Dec 2008 12:13:20 -0000)> 
> Is it possible to run a Cygwin GUI app (i.e. requiring 'X') from a DOS
> terminal, as opposed to a bash terminal?  After starting the X server
> I tried  "cygstart path/to/my/program" but nothing happened.  The app
> runs fine if I start it from a bash terminal.

You have to set the DISPLAY variable to a valid value.

Thorsten


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