I am in the process of learning some scripting, however I am running into a roadblock in specifying a certain time format in the array. Ideally I would like to use "%I:%M %p %A"

Here are the lines of text that I am interrogating:

1123,3/25/2010,00:14 Thu,33229
1124,3/26/2010,13:30 Fri,33230
1125,3/27/2010,04:49 Sat,33231

The script I have is reading each line one by one and sending each row out as an email to a voice mailbox that is automatically read to the user at login. The 3rd field is in a 24 hour format and I would like it in a 12 hour format with AM or PM associated. I can use sed against the 3 character day representation without any trouble, but the current 24 hour format of hh:mm is giving me heartburn at the moment. Here is the script that I have thus far, which does work for the most part.

Please help!!

#!/bin/bash -vx

MAIL="@modmsg-mss1.testdomain.com"
IFS=$(echo -en "\n\b")

#Setup reg-ex for CSV
q='"' # quote
w=$' \t' # whitespace
nq="^$q" # not quote
nwc="^$w," # not whitespace or comma
nwqc="^$w$q," # not whitespace, quote or comma
date=$(date '+%x')
uqf="[$nwqc]([$w]*[$nwc])*" # unquoted field
qf="($q[$nq]*$q)*" # quoted field
iqf="($q[$nq]*$q)*$q[$nq]*" # incomplete quoted field

csv="[$w]*($qf|$uqf)[$w]*,[$w]*(.*)" # comma separated values

# Print fields[] arrays along with their indices - testing purpose only.

function csvprint () {
for i in ${!fields[*]}
do
printf '%s\n' "${fields[i]}"
done
}

unset fields
nf=0
#Get File Name
fname=$1
#Setup Messages
msg1="Welcome! "
msg2="Your delivery is Scheduled for "
msg3=" at "
msg4=" military time."
msg5=" Have a Great Day! "
#Check if file exists
if [ ! -f $fname ];then
echo "File $fname not present - exiting"
exit 2
fi

#Open File
exec<$fname

#Process all lines in file
while read line
do
while [[ "$line" =~ ^$csv$ ]]
do
fields[nf++]="${BASH_REMATCH[1]}"
line="${BASH_REMATCH[4]}"
done
fields[nf++]=$line;

fi
#Create Mail message body
#mailmsg=$msg1${fields[0]}$msg2${fields[1]}$msg3
mailmsg=$msg1$msg2${fields[1]}$msg3${fields[2]}$msg4$msg5
#Create send to info
mailto=$line$MAIL
#E-mail information to specific mailbox
echo $mailmsg|mail -s "Your Delivery Information for Restaurant ${fields[0]}" $mailto -- -f "deliveries@testdomain.com"
nf=0;
unset fields
done
exit 0

Sorry, I'm a bit tired now to go through your script, but using the GNU date command you can do something like this:
This is due to the fact that "m/dd/yyyy HH:MM Day" is a valid input date format. You can easily change the part before the pipe to parse one line at a time in a for loop.

Hope this helps.

An additional note: another way to manage dates is by means of awk itself (using the mktime and strftime statements). In this way you can easily print out more data from the input file. Here is an example:
Obviously in your case, better to stick with the date command which is more flexible and easy to manage. This is just to illustrate another chance.