A GUI for ps(1) Built with Mozilla
mozilla -chrome file:///home/nrm/psviewer/tree.xul
The psviewer tool has first-class status within the Mozilla installation. If necessary, it could be integrated with other applications, such as the Firefox/Firebird browser or Thunderbird e-mail client. It also could be added as a menu option to the Tools menu, for example.
There's a lot of technology in this article. The biggest mistake you can make is to try to use all the features described here in your first Mozilla experiment. Because validation of XML is less than verbose in Mozilla, you easily can become tied in a knot. It's best to start with a simple project and work up to the challenging combinations played with here. Although the output of ps(1) also can be made into a dynamic HTML page, XUL is a more robust and professional GUI in the end, fully integrated with the desktop.
Mozilla is a powerful GUI environment waiting to be explored. It is likely to occupy the same niche under Linux that Visual Basic occupies under Windows. Even better, Mozilla is a portable and cross-platform technology. Your projects can be designed to work on BSD, HP-UX, SunOS, AIX and Mac OS X, as well as Linux.
Nigel McFarlane is a freelance science and technology writer with an extensive programming background. His latest book is Rapid Application Development with Mozilla, ISBN 0131423436. Reach him at email@example.com.
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