Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

1. Write a script called "tod" that will display the time of day in am or pm notation rather then the 24 hour clock time. Use expr to convert from 24-hour clock time.
Use either (if) or (case) statement. Use the standard, unmodified output from the date command for this exercise.



2. Relevant commands, code, scripts, algorithms:
date, cut and expr

3. The attempts at a solution (include all code and scripts):#!/bin/sh -xv
# this is the date script
#this will change the 24hr to 12hr
#
#
let i=$"`date +%H`"
let MIN=$"`date | cut -c15-19`"
if [ $i -gt 12 ]
then
`expr $i -12`
echo " $i:$MIN"
fi
esle
echo "$i:$MIN"
fi
########################################
I've also used
########################################
HR=$"`date | cut -c1-2`"
MT=$"`date | cut -c15-19
NEWHR=$"`expr $HR - 12`"
if [ $HR -le 12 ]
then
echo "$HR:$MT"
esle
echo " $NEWHR:$MIN"
fi
########################################
and
########################################
HR=$"`date | cut -c1-2`"
MT=$"`date | cut -c15-19
NEWHR="`expr $HR - 12`

case $NEWHR
in
24) `expr $NEWHR -12`;;
echo "$NEWHR:$MT"
23) `expr $HR -12`;;
and so on till
*) to eat up the rest
esac



4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Washtenaw community college, Washtenaw MI, Phil Geyer, CIS 221.

Any help would be great this has been driving me nuts all spring break. Note : I'm using bash shell, the expr is the thing going wrong it keeps giving me a non-numeric argument error.

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

---------- Post updated at 07:44 PM ---------- Previous update was at 07:39 PM ----------

#!/bin/sh -xv
# this is the date script
#this will change the 24hr to 12hr
#
#
let i=$"`date +%H`"
+ date +%H
+ let i=$19
./datt: let: not found
let MIN=$"`date | cut -c15-19`"
+ date
+ cut -c15-19
+ let MIN=$43:47
./datt: let: not found
if (\ [ "$i" -gt 12 \) -a \( "$i" -eq 24 \) ]
then
./datt: syntax error at line 10: `then' unexpected
I figured it out thank you for helping me
code:
this will change the 24hr to 12hr
#
#
HR=$"`date +%H`"
MIN=$"`date +%M`"
SEC=$"`date +%S`"
NEWHR=$"`expr $HR - 12`"
#
#
#
if [ $HR -gt 12 ]
then
echo "$NEWHR:$MIN:$SEC pm"
else
echo "$NEWHR:$MIN:$SEC am"
fi