Shell Programming and Scripting

B102:Action Figure - Teacher:79
B103:Bike - Purple:23
B104:Baseball:25
B105:Cricket Bat:15
B101:Action Figure - Fireman:15
B100:Flame-Thrower:25

[ username ] ./manage.bash

INVENTORY MANAGE MENU

1. Generate Inventory Report
2. Add Item Quantity

Please enter a number (1,2): 2
Enter ITEM #: B106
Does not Exist - Enter ITEM #: B101
Enter units to increase "Action Figure - Fireman": 15

if [[ $TestNum = 2 ]]; then

        echo -n "Enter value to increase " && awk -F ":" '$1 == "'"$item"'" {print $2}' inv.dat
        read value

        awk -F ":" '$1 == "'"$item"'" {OFS = ":"; print $1,$2,'"$value"' + $3 }' inv.dat >> inv.dat
        exit

fi

awk -v it=$item -v val=$value 'BEGIN{FS=OFS=":"}$1==it{$3+=val}1' inv.dat

$ cat manage.sh
#!/bin/sh

FILE="./inv.dat"

f_add () {
        echo -n "Enter ITEM # "
        read ITEM
        echo -n "Enter units to increase \"`awk -F ":" '$1=="'"$ITEM"'" {print $2}' $FILE`\" # "
        read UNITS
        awk 'BEGIN{FS=OFS=":"}$1=="'"$ITEM"'" {$3+="'"$UNITS"'"}1' $FILE > $FILE.tmp
        mv $FILE.tmp $FILE
}

f_gen () {
echo "Not yet implemented"
}

while : # Loop forever
do
cat << !

INVENTORY MANAGE MENU

1. Generate Inventory Report
2. Add Item Quantity
3. Quit

!
echo -n "Your choice? : "
read choice

case $choice in
        1) f_gen ;;
        2) f_add ;;
        3) clear; exit ;;
        *) echo; echo "\"$choice\" is not a valid option."; sleep 2 ;;
esac
done