要求：随机创建10个文件，文件名前缀要随机，包含hunk字符串，结尾是1-10，扩展名是.doc。

例如：mzE_hunk_8.doc，Ma_hunk_10.doc

[root@localhost ~]# vim file1.sh

#!/bin/bash

path1=/data/hunk

[ -d ${path1} ] || mkdir -p ${path1}

cd ${path1}

for i in `seq 1 10`

do

RANDOM1=`head -1 /dev/urandom |od  -N 2 | head -1|awk '{print $2}'`

string1=`cat /dev/urandom |sed 's/[^a-zA-Z]'//g|strings -n 2 | head -1`

let n=${RANDOM1}%10+1

touch ${string1}_hunk_${n}.doc

done

[root@localhost ~]#bash file1.sh

[root@localhost ~]# ls /data/hunk/GHC_hunk_7.doc  Mq_hunk_6.doc  Rfa_hunk_1.doc  tM_hunk_4.doc  VY_hunk_2.docho_hunk_8.doc   PA_hunk_1.doc  slZ_hunk_4.doc  Tq_hunk_5.doc  zDmz_hunk_2.doc