Shell Programming and Scripting

GetName()
{
if [ $abc != "SO" ]
then
        echo " Please enter the name: "
        read Name
        tempvar=0
        while read line
        do
                if [ "$Name" = "$line" ]
                then
                        tempvar=`expr $tempvar + 1`
                        echo $tempvar
                        exit
                fi
        done < $dirUser/names.txt
        
        if [ $tempvar -eq 0 ]
        then
                echo "This is not a valid name... Exiting"
                exit
        fi
fi
}

if [[ "$line" =~ "$Name" ]]
then
        tempvar=`expr $tempvar + 1`
        echo $tempvar
        exit
fi

#!/bin/ksh -xv

if grep "$Name" "$dirUser/names.txt" 1> /dev/null 2> /dev/null
then
        ...
else
        ...
fi

+ echo  Please enter the name:
 Please enter the name:
+ read name
ritu
tempvar=0
+ read line
+ [ ritu = abc ]
+ read line
+ [ ritu = def ]
+ read line
+ [ ritu = ghi ]
+ read line
+ [ ritu = ritu ]
+ expr 0 + 1
tempvar=1
+ echo 1            #<-------------this is the value tat is getting set correctly inside the loop, as the entered name matches entry in the file
1
+ exit
+ echo 0            #<-------------this is where the value gets reset, coz its outside the loop
0
+ [ 0 -eq 0 ]
+ echo This is not a valid name... Exiting             #<-------------coz of incorrect value, it print "invalid name", instead of valid
This is not a valid name... Exiting
+ exit

+ exit
+ echo 0            #<-------------this is where the value gets reset, coz its outside the loop
0

GetName() {
if [ $abc != "SO" ]
then    printf "Please enter the name: "
        read Name
        while read line
        do
                if [ "$Name" = "$line" ]
                then    return
                fi
        done < $dirUser/names.txt

        echo "$Name is not a valid name... Exiting"
        exit 1
fi
}

exit 1

return 1