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    $ echo "hello" > data1
    $ echo "world" > data2
...
    $ < $file | wc -l
    bash: $file: ambiguous redirect
          0

    FILES="file1 file2 file3 file4 file5"
    for file in $FILES
    do  ... something with $file ...
    done

paths='/bin /usr/bin /usr/local/bin /usr/ucb /usr/local /usr/lbin'
paths="$paths /opt/bin /opt/local/bin /opt/local /opt/lbin"
...
        *) test -d $p && PATH=$PATH$p_$p ;;
        esac
done