if condition ...

Shell Programming and Scripting
1

i have following if condition

if [ "$data_type" == "ASCII" ]

above statement is case sensitive.....what is syntax if i have to make above comparision case insensetive

2 
if [ "$data_type" = "ASCII" ] || \
   [ "$data_type" = "ascii" ]
3 
case "$data_type" in [Aa][Ss][Cc][Ii][Ii])echo OK;;*)echo KO;;esac

[[ "$data_type" = [Aa][Ss][Cc][Ii][Ii] ]]&&echo OK||echo KO
4

data_type=`echo $data_type | tr '[a-z]' '[A-Z]'`
if [ "$data_type" == "ASCII" ]

5

With ksh you can declare a variable with the attribute 'contains always uppercase' :

typeset -u UpperVar
UpperVar='AbCdEf'
echo $UpperVar   # -> Ouput is : ABCDEF

In the same way you can use the -l option for lowercase contents.

jean-Pierre.