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checking wether an input is using letters of the alphabet


 
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# 1  
Old 07-27-2009
checking wether an input is using letters of the alphabet

afternoon forums.

I need to get a way of testing as to wether an inputed character is part of the english alphabet.

i have come up with the following code but its not working at all.
Code:
 
until [ (echo $in1) = '[a-z]']
       do
       echo This is not a Letter
       done

any help would be beneficial to me.
# 2  
Old 07-27-2009
Code:
#!/bin/sh

while read LINE
do
        case "$LINE" in
        [A-Za-z]) echo "alpha";;
        *) echo "not alpha";;
        esac
done

 

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