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
1 #!/bin/bash
2 # ascii.sh
3
4 # Script by Sebastian Arming.
5 # Lightly modified by ABS Guide author.
6 # Used with permission (thanks!).
7
8 exec >ASCII.txt # Save stdout to file,
9 #+ as in the example scripts
10 #+ reassign-stdout.sh and upperconv.sh.
11
12 MAXNUM=256
13 COLUMNS=5
14 OCT=8
15 OCTSQU=64
16 LITTLESPACE=-3
17 BIGSPACE=-5
18
19 i=1 # Decimal counter
20 o=1 # Octal counter
21
22 while [ "$i" -lt "$MAXNUM" ]; do
23 paddi=" $i"
24 echo -n "${paddi: $BIGSPACE} " # Column spacing.
25 paddo="00$o"
26 echo -ne "\\${paddo: $LITTLESPACE}"
27 echo -n " "
28 if (( i % $COLUMNS == 0)); then # New line.
29 echo
30 fi
31 ((i++, o++))
32 # The octal notation for 8 is 10 and 80 -> 100.
33 (( i % $OCT == 0)) && ((o+=2))
34 (( i % $OCTSQU == 0)) && ((o+=20))
35 # We don't have to count past 0777.
36 done
37
38 exit 0 |