[PLUG] check for existing user.

[Michelle Weber <umweber@mcs.drexel.edu>]

Can someone tell me the obvious and what is wrong with this loop in bash:

exists=true

while [ exists==true ];
do
        echo "Username: "
        read username
        
        if (grep ^$username: /etc/passwd 1>&2 > /dev/null) ; then
                exists=true
        else    
                exists=false
        fi;     
done    



No matter what it seems exists=true because the loop never exits.
Thanks, 


-- 
Michelle Weber
umweber@mcs.drexel.edu



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