In a book of this sort it is traditional to have an ASCII table appendix. This book does not. Instead, here is a short shell script that generates a complete ASCII table and writes it to the file ASCII.txt.
Example R-1. A script that generates an ASCII table
#!/bin/bash
# ascii.sh
# Script by Sebastian Arming.
# Lightly modified by ABS Guide author.
# Used with permission (thanks!).
exec >ASCII.txt # Save stdout to file,
#+ as in the example scripts
#+ reassign-stdout.sh and upperconv.sh.
MAXNUM=256
COLUMNS=5
OCT=8
OCTSQU=64
LITTLESPACE=-3
BIGSPACE=-5
i=1 # Decimal counter
o=1 # Octal counter
while [ "$i" -lt "$MAXNUM" ]; do
paddi=" $i"
echo -n "${paddi: $BIGSPACE} " # Column spacing.
paddo="00$o"
echo -ne "\\${paddo: $LITTLESPACE}"
echo -n " "
if (( i % $COLUMNS == 0)); then # New line.
echo
fi
((i++, o++))
# The octal notation for 8 is 10 and 80 -> 100.
(( i % $OCT == 0)) && ((o+=2))
(( i % $OCTSQU == 0)) && ((o+=20))
# We don't have to count past 0777.
done
exit 0 |