统计目录下文件大小的shell脚本实例

时间:2014-09-24 09:55 来源:linux.it.net.cn 作者:it

linux下统计目录中文件的大小，代码如下：

复制代码代码示例:

#!/bin/sh
# filename: df_dir.sh
#edit www.jbxue.com

    usage(){
        echo -e "\nUsage: `basename $0` DIRECTORY [MIN_SIZE]\n"
        echo "Get file list of DIRECTORY, then output them in order by size."
        echo "If MIN-SIZE is specified, only print those greater than MIN-SIZE.";
        echo -e "MIN-SIZE is non-zero integer optionally followed by a k/K/m/M/g/G.\n";
        exit
    }

    if [ $# -lt 1 ] || [ $# -gt 2 ]; then
        usage
    elif [ ! -d $1 ] ; then
        echo -e "\nERROR: $1 is not a directory or does not exist\n"
        exit
    fi

    ## delete the slash at the end of directory name
    ## eg: /usr/share/ --> /usr/share
    dir=${1%/}

    ## if MIN_SIZE is specified
    if [ -n $2 ] ; then
        ## get the last char of MIN_SIZE
        unit=${2: -1}

## get thE NUMBER part of MIN_SIZE except the unit
size=${2%?}

        ## if size is not an integer number, then exit
        echo $size|awk '{if($0~/[^0-9]/) exit 1}'
        [ $? -ne 0 ] && usage

        case $unit in
            g|G)    msize=$[size * 1024 * 1024]
                    ;;
            m|M)    msize=$[size * 1024]
                    ;;
            k|K)    msize=$size
                    ;;
            [0-9]) msize=$2
                    ;;
            *)      usage
                    ;;
        esac
    else
        msize=0
    fi

    du -s $dir/*|sort -rn|awk -v size=$msize '{\
        if($1>1024*1024 && $1>size) printf "%5.1fG\t%s\n",$1/1024/1024,$2;\
        else if($1>1024 && $1>size) printf "%5.1fM\t%s\n",$1/1024,$2;\
        else if($1>size) printf "%5dK\t%s\n",$1,$2}'

用法: dfdir <目录> [最小文件大小,可省略,单位可为k/K/m/M/g/G, 默认为K]

说明: 大小超过1G的文件输出单位为G,超过1M的文件输出为单位为M

例1:

复制代码代码示例:

	dfdir.sh /mnt/backup/lvm/

	      1.8 G /mnt/backup/lvm/win2kvm

	    330.7 M /mnt/backup/lvm/win2kvm.tar.bz2

	    36.0 K /mnt/backup/lvm/chkrootkit.tar.gz

例2:

复制代码代码示例:

	dfdir.sh /usr/share 10m 显示大小超过10M的文件

	    29.1 M /usr/share/man

	    19.0 M /usr/share/gtk-doc

	    18.5 M /usr/share/locale

	    17.4 M /usr/share/themes

	    11.4 M /usr/share/fonts

例3:

复制代码代码示例:

	dfdir.sh /bin 100 显示/bin下超过100K的文件

	      493K  /bin/bash

	      160K  /bin/tar

个人感觉，这个shell脚本写的不错，主要是多参数的灵活应用，方便输出想要的数据格式。

(责任编辑：IT)