In this section are various notes/examples relating to Unix (primarily AIX).

Filesystems

• View
• Mount/Unmount
• Users Using
• Space Used In
• Change Size

Performance

• IO
• Memory

Miscellaneous

• Vim/Vi
• Fifo special files
• Useful finds

In this section are various notes/examples relating to Oracle

• Estimate Rollback Time
• Maximum mbrc

With these files you can fool programs that work with files to work on a pipe.

This is how you create one:

neil@tpo >/usr/sbin/mknod neilpipe p
neil@tpo >ls -l neilpipe
prw-rw-r--   1 neil     develop           0 13 Mar 10:22 neilpipe

Now to prove it works I can set a cat going reading from the file (pipe) and then
echo something into the file (pipe). The echoed text will appear on screen via the
cat:

neil@tpo >cat < neilpipe &
[1]     71234
neil@tpo >echo "hello world" > neilpipe
neil@tpo >hello world
[1] +  Done                    cat < neilpipe &

Not such a good example but great if your using Oracle's exp/imp utilities or
working with massive files and not much disk space.