dd命令可以用来创建任意大小文件，如：

在当前目录下创建一个文件名为file的10M的空文件

dd if=/dev/zero of=./file.txt bs=1M count=10

下面为一个脚本，可以创建指定数量、大小和名称的文件(蓝色部分为脚本内容)

linux:/mnt/hgfs/vmware-share/dd # cat test.sh

#!/bin/bash

count=0

MAX=10

FileName='file'

while [ ${count} -lt ${MAX} ]

do

#echo ${count}

tmp=${FileName}${count}

#echo ${tmp}

dd if=/dev/zero of=./${tmp} bs=1M count=10

((count++))

done

linux:/mnt/hgfs/vmware-share/dd #

执行结果：

linux:/mnt/hgfs/vmware-share/dd # ll

总用量 51205

drwxrwxrwx 1 root root 4096 2014-03-27 00:18 .

drwxrwxrwx 1 root root 4096 2014-03-26 23:49 ..

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file0

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file1

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file2

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file3

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file4

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file5

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file6

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file7

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file8

-rwxrwxrwx 1 root root 10485760 2014-03-27 00:13 file9

-rwxrwxrwx 1 root root 197 2014-03-27 00:13 test.sh

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