Как очистить массив от дубликатов?

man uniq
 -d, --repeated
              only print duplicate lines

declare -a arr=('Suse' 'Debian' 'Suse' 'Red hat' 'Suse' 'Red hat' 'Suse' 'Debian' 'Suse' 'Fedora' 'Suse' 'Debian' 'Suse');

OLDIFS="$IFS"
IFS=$'\n'
declare -a uniqArr=(
    $(for i in ${arr[@]}; do
        echo -en "$i\n"
    done| sort -u)
)
IFS="$OLDIFS"

echo ${uniqArr[@]}

link_array=$(for line in ${array[*]}; do echo $line; done | sort | uniq)

eval link_array=($(printf "%s\n" "${array[@]}" | sort -u))