isocommented.txt ISO-8859-1: Character list and comments.
The Open Group Base Specifications.
UNIX shell differences FAQ [Brian Blackmore].
csh programming considered harmful [Tom Christiansen].
Commented shell scripts: yless, fdiff.
A guide to Unix shell quoting.
The script qecho is useful for experimenting with shell quoting.
perl-intro.txt Commented logfile of a perl demonstration.
European style calendar program (Exercise 11.2).