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| #!/bin/bash
#Author: LingYi
#Date: 2016.4.12
#Func: Delete duplicate files
#EG : $0 [ DIR1 DIR2 ... DIRn ]
#定义临时文件,自行确定用户的写入权限
md5sum_result_log="/tmp/$(date +%Y%m%d%H%M%S)"
echo -e "[1;31mMd5suming ...[0m"
#遍历目录,校验文件并做输出和写入临时文件
find $@ -type f -print0 | xargs -0 -I {} md5sum {} | tee -a $md5sum_result_log
files_sum=$(cat $md5sum_result_log | wc -l)
#定义数组,此数组的索引为文件的MD5值,元素为文件名称,因此需要提前声明(需要bash支持)
declare -A md5sum_value_arry
while read md5sum_value md5sum_filename
do
#为了支持文件名有空格的情况,使用“+”代替空格符作为分隔个个文件名的分隔符
#因此,文件名若带有“+",则脚本执行结果会有问题,需要用户删除文件时,选择手动选择模式以便确认
md5sum_value_arry[$md5sum_value]="${md5sum_value_arry[$md5sum_value]}+$md5sum_filename"
(( _${md5sum_value}+=1 ))
done <$md5sum_result_log
#此循环实现统计重复文件的组数据并对多余文件的大小做统计
groups_sum=0
repfiles_size=0
for md5sum_value_index in ${!md5sum_value_arry[@]}
do
if eval [[ ${_${md5sum_value_index}} -gt 1 ]]; then
let groups_sum++
need_print_indexes="$need_print_indexes $md5sum_value_index"
eval repfile_sum=$(( $_$md5sum_value_index - 1 ))
repfile_size=$( ls -lS "`echo ${md5sum_value_arry[$md5sum_value_index]}|awk -F'+' '{print $2}'`" | awk '{print $5}')
repfiles_size=$(( repfiles_size + repfile_sum*repfile_size ))
fi
done
#输出统计信息
echo -e "[1;31mFiles: $files_sum Groups: $groups_sum
Size: ${repfiles_size}B $((repfiles_size/1024))K $((repfiles_size/1024/1024))M[0m"
[[ $groups_sum -eq 0 ]] && exit
#用户选择是否查看重复文件的分组详情。
read -n 1 -s -t 300 -p 'Show detailed information ?' user_ch
[[ $user_ch == 'n' ]] && echo || {
[[ $user_ch == 'q' ]] && exit
for print_value_index in $need_print_indexes
do
echo -ne "[1;35m$((++i)) [0m"
eval echo -ne "\[1;34m$print_value_index [ $_${print_value_index} ]:\[0m"
echo ${md5sum_value_arry[$print_value_index]} | tr '+' ''
done | more
}
#用户选择删除文件的方式
echo -e "Manual Selection by default !"
echo -e " 1 Manual selection 2 Random selection"
echo -ne "[1;31m"
read -t 300 USER_CH
echo -ne "[0m"
[[ $USER_CH == 'q' ]] && exit
[[ $USER_CH -ne 2 ]] && USER_CH=1 || {
echo -ne "[31mWARNING: you have choiced the Random Selection mode, files will be deleted at random !Are you sure ?[0m"
read -t 300 yn
[[ $yn == 'q' ]] && exit
[[ $yn != 'y' ]] && USER_CH=1
}
#根据用户选择的方式,进行处理
echo -e "[31mWarn: keep the first file by default.[0m"
for exec_value_index in $need_print_indexes
do
#此循环获取包含即将删除的文件的数组
for((i=0,j=2;i<$(echo ${md5sum_value_arry[$exec_value_index]} | grep -o '+' | wc -l); i++,j++))
do
file_choices_arry="$(echo ${md5sum_value_arry[$exec_value_index]}|awk -F'+' '{print $J}' J=$j)"
done
eval file_sum=$_$exec_value_index
if [[ $USER_CH -eq 1 ]]; then
#如果用户选择手动模式,则循环输出重复文件分组,并一一处理
echo -e "[1;34m$exec_value_index[0m"
for((j=0; j<${#file_choices_arry[@]}; j++))
do
echo "[ $j ] ${file_choices_arry[j]}"
done
read -p "Number of the file you want to keep: " num_ch
[[ $num_ch == 'q' ]] && exit
seq 0 $((${#file_choices_arry[@]}-1)) | grep -w $num_ch &>/dev/null || num_ch=0
else
num_ch=0
fi
#如果用户选择自动删除方式,则直接删除多余重复文件
for((n=0; n<${#file_choices_arry[@]}; n++))
do
[[ $n -ne $num_ch ]] && {
echo -ne "[1mDeleting file \" ${file_choices_arry[n]} \" ... [0m"
rm -f "${file_choices_arry[n]}"
[[ $? -eq 0 ]] && echo -e "[1;32mOK" || echo -e "[1;31mFAIL"
echo -ne "[0m"
}
done
done
|