书写磁盘存储和io消耗脚本(shell)

根据所剩磁盘存储空间的百分比

#!/usr/bin/env bash
#-*- coding:utf-8 -*-

function help(){
    printf "Usage: \n"
    printf "  python mem.py 50(百分比)\n"
    }

function create_file(){
    unit=$1
    count=$2
    newdirname="diskdir"
    cd /data1/minisearch/
    [ ! -d ${newdirname} ] && mkdir ${newdirname}

    cd ${newdirname}
    for i in `seq 1 ${count}`;do
        dd if=/dev/zero of=zeroFile${i} bs=1${unit} count=5  >/dev/null 2>&1
    done

    sleep 1
    cd /data1/minisearch/diskdir/
    for j in `seq 1 ${count}`;do
        rm -f zeroFile${j}
    done
    }

    create_ration=$1
    if (( 1 <= ${create_ration} && ${create_ration} <= 99 ));then
        allfreesize=$(echo `df -h | grep "data1" | awk '{print $4}'` | sed 's/[A-Z]//g')

        create_size=$((${allfreesize}*${create_ration}/100))
        c=$((${create_size}/5))
        while true
        do
            create_file "G" ${c}
            sleep 2
        done
    else
        help
    fi