Contents:
News/Awards
Who I am
Software
Programming
Configuration
Opinions
Fun (German)
Downloads
Links
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Programming tutorials:
- Abortion of shell scripts and proper
handling of signals.
- In UNIX terminal sessions, you usually have a key like
C-c (Control-C) to immediately end whatever program you
have running in the foreground. This should work even when the program
you called has called other programs in turn. Everything should be
aborted, giving you your command prompt back, no matter how deep the
call stack is.
Basically, it's trivial. But the existence of interactive
applications that use SIGINT and/or SIGQUIT for other purposes than a
complete immediate abort make matters complicated, and - as was to
expect - left us with several ways to solve the problems. Of course,
existing shells and applications follow different ways.
This Web pages outlines different ways to solve the problem and
argues that only one of them can do everything right, although it
means that we have to fix some existing software.
- Advanced signal handlers and floating point
- Examples of floating-point handling in FreeBSD and Linux, how to
find out the cause of a floating point exceptions, drawbacks of the
Intel chips with regards to floating point. [Web page not written yet,
but I have source examples you may request by mail]
- Debug GNU Objective C
- How to debug GNU Objective C when
your gdb doesn't have the slightest idea what Objective-C is. This one
used to be my first Web page back in February 1995.
- The Common Lisp programming language
- My Lisp page.
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