+ while [ "$a" != "$b" ] ; do
+ echo -n "Enter new UNIX password for user root: "
+ read -s a
+ echo
+ echo -n "Retype new UNIX password for user root: "
+ read -s b
+ echo
+ if [ "$a" != "$b" ] ; then
+ echo "Sorry, passwords do not match. Retry."
+ a='1'
+ b='2'
+ else
+ echo root:"$a" | chpasswd -m
+ unset a
+ unset b
+ fi
+ done