rotatedir

#! /bin/bash

runcmd() {
    echo "$@" 1>&2
    return 0
}


#e=runcmd

rotate_dir() {
    local dir=$1
    local count=$2

    if [ ! -d $dir ]; then
        $e mkdir -p $dir
        return 0
    fi

    local n=$count
    echo -n "Rotate $dir .. "
    while [ $n -gt 0 ]; do
        local prev=$(( $n - 1 ))
        local d=$dir.$n
        local pd=$dir.$prev

        if [ -d $d ]; then
            $e rm -rf $d
        fi
        if [ -d $pd ]; then
            $e mv $pd $d
            echo -n "$n "
        fi
        n=$prev
    done

    $e mv $dir $dir.0
    echo  "0 "
    $e mkdir -p $dir
    return 0
}

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