I want to locate directories that are upper, lower or have both upper and lower cases.

What I have is:

find /tmp/$var2 -type d' " ); [ -d $dir ] && echo "host case is incorrect" || echo "host case is correct"

Posting more of your code would help a lot.

Here is a quick way to check mixed or all uppercase case:

[ "$dir" !=  $(echo "$dir" | awk '{tolower($0); print $0}') ] && echo "Same" || "mixed"

#!/bin/bash

for DIR in $( find . -type d | sed 's/\.\///g' )
do
        if expr match "$DIR" "[[:lower:]]*$" > /dev/null
        then
                echo "$DIR - Lowercase"
        elif expr match "$DIR" "[[:upper:]]*$" > /dev/null
        then
                echo "$DIR - Uppercase"
        elif expr match "$DIR" "[0-9]*$" > /dev/null
        then
                echo "$DIR - Numeric"
        elif expr match "$DIR" "[a-zA-Z0-9]*$" > /dev/null
        then
                echo "$DIR - Alphanumeric"
        elif expr match "$DIR" "[a-zA-Z]*$" > /dev/null
        then
                echo "$DIR - Mixed"
        fi
done

These replies are exactly what I needed! Thanks for helping. I'm learning so much from all your posts!

I did not know how to use "$DIR" "[[:upper:]]*$" collation and this explained it.