How to convert user input to a single case upper/lower for easy comparison?
Option 1: Use tr command
bash-3.00$ echo “unni” | tr ‘[a-z]‘ ‘[A-Z]‘
UNNI
Option 2: If you are using korn shell, use typeset command
#!/usr/bin/ksh
typeset -u VAR1
VAR1=”True”
echo $VAR1
