Advanced Bash−Scripting Guide

#
# The above command substitution lays more pipe than a plumber .
}
Advanced Bash−Scripting Guide
input_name="$1"
echo
echo "Name = $input_name"
# Change all characters of name input to lowercase.
# −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
name=$( echo $input_name | tr A−Z a−z )
# −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
# Just in case argument to script is mixed case.
# Prefix of soundex code: first letter of name.
# −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
char_pos=0
# Initialize character position.
prefix0=${name:$char_pos:1}
prefix=`echo $prefix0 | tr a−z A−Z`
# Uppercase 1st letter of soundex.
let "char_pos += 1"
name1=${name:$char_pos}
# Bump character position to 2nd letter of name.
# ++++++++++++++++++++++++++ Exception Patch +++++++++++++++++++++++++++++++++
# Now, we run both the input name and the name shifted one char to the right
#+ through the value−assigning function.
# If we get the same value out, that means that the first two characters
#+ of the name have the same value assigned, and that one should cancel.
# However, we also need to test whether the first letter of the name
#+ is a vowel or 'w' or 'h', because otherwise this would bollix things up.
char1=`echo $prefix | tr A−Z a−z`
assign_value $name
s1=$value
assign_value $name1
s2=$value
assign_value $char1
s3=$value
s3=9$s3
# First letter of name, lowercased.
# If first letter of name is a vowel
#+ or 'w' or 'h',
#+ then its "value" will be null (unset).
#+ Therefore, set it to 9, an otherwise
#+ unused value, which can be tested for.
if [[ "$s1" −ne "$s2" || "$s3" −eq 9 ]]
then
suffix=$s2
else
suffix=${s2:$char_pos}
fi
# ++++++++++++++++++++++ end Exception Patch +++++++++++++++++++++++++++++++++
Appendix A. Contributed Scripts 378