linux/mac下命令行rm回收站--rmtrash

Linux、mac的命令行下没有回收站功能，很多时候手一抖就把重要文件给 rm -fr * 了，虽然linux下有可能通过lost +found/debugfs找回，但难度也比较大，不能保证一定能够找回。人总是会犯错，本人工作这几年也犯过3次rm -fr删除后后悔的错误，与其后悔不如防范于未然，像桌面操作系统（windows、mac os、Ubuntu）一样加个回收站机制就可以了，经过几天的努力终于实现了，放到github上了，欢迎使用。

源码地址：https://github.com/LaiJingli/rmtrash

rmtrash 是linux和mac下命令行版本rm的回收站，安装后对用户透明，符合正常使用rm的习惯，有了他再也不怕rm时候手颤抖了。
rmtrash stands for "rm trash" which acts just like the system built-in rm command,and just moves the file to the trash for recovery when needed. 

提醒：rmtrash主要用于防止人为误删除操作，回收站本身不能替代系统正常的数据备份操作，数据备份依然非常重要。

主要参考了如下2篇文章，向作者表示感谢：

源码地址：https://github.com/LaiJingli/rmtrash

回收站功能在 Linux 中的实现： http://www.ibm.com/developerworks/cn/linux/1410_licy_linuxtrash

Bash Getopts - 让你的脚本支持命令行参数： http://linux.cn/article-3204-1.html

原文地址: http://blog.csdn.net/xuyaqun/article/details/44306055

源码如下：

#!/bin/bash
### rmtrash,rm command line recycle bin for linux and mac osx.
### rmtrash 是linux和mac下命令行版本rm的回收站，安装后对用户透明，符合正常使用rm的习惯(支持rm -fr file哦)，有了他再也不怕rm时候手颤抖了。
### rmtrash stands for "rm trash" which acts just like the system built-in rm command,and just moves the file to the trash for recovery when needed.
### https://github.com/LaiJingli/rmtrash
### laijingli2006@gmail.com
### 2015-3-9

###trash目录define
realrm="/bin/rm"
trash_dir=~/.rmtrash/
trash_log=~/.rmtrash.log
###判断trash目录是否存在，不存在则创建
if [ ! -d $trash_dir ] ;then
    mkdir -v $trash_dir
fi

###动态修改用户shell中的alias配置
os_type=`uname`
shell_path=$SHELL
shell_type=`echo $SHELL|awk -F/ '{print $NF}'`
alias_file=~/.${shell_type}rc
alias_rm=`cat $alias_file|grep ^"alias rm="`
return_value=$?
#echo return_value: $return_value
#echo alias_rm: $alias_rm
###如果不存在rm alias，则生成
if [[ $return_value -ne 0 ]] ;then
    echo first time to run rmtrash
    echo "alias rm=/bin/rmtrash.sh" >>$alias_file && source $alias_file
###如果存在rm alias，且不是指向rmtrash的，则注释掉，区分linux 和mac
elif [[ "$alias_rm" != "alias rm=/bin/rmtrash.sh" ]];then
    echo already has alias rm,and must commit out
    if [[ $os_type == Darwin ]];then
        sed -i .bak 's/^alias rm=/#alias rm=/g' $alias_file && 
        echo "alias rm=/bin/rmtrash.sh" >>$alias_file && 
        source $alias_file
    elif [[ $os_type == Linux ]];then
        sed -i.bak 's/^alias rm=/#alias rm=/g' $alias_file && 
        echo "alias rm=/bin/rmtrash.sh" >>$alias_file && 
        source $alias_file
    fi
fi

####function define
###usage function
rm_usage () {
    cat <<EOF
Usage1: `basename $0` file1 [file2] [dir3] [....] delete the files or dirs,and mv them to the rmtrash recycle bin
Usage2: rm         file1 [file2] [dir3] [....] delete the files or dirs,and mv them to the rmtrash recycle bin
        rm is alias to `basename $0`.
options:
    -f  mv one or more files to the rmtrash recycle bin
    -r  mv one or more files to the rmtrash recycle bin
    -fr mv one or more files to the rmtrash recycle bin
    -rf mv one or more files to the rmtrash recycle bin
    -R  Restore selected files to the originalpath from rmtrash recycle bin
    -l  list the contens of rmtrash recycle bin
    -i  show detailed log of the deleted file history
    -d  delete one or more files by user's input file name from the trash
    -e  empty the rmtrash recycle bin
    -h  display this help menu
EOF
}


###rm mv function
rm_mv () {
    echo ----------------------------
    now=`date +%Y%m%d_%H:%M:%S`
    dupfix=.`date +%Y%m%d%H%M%S`
    ###将用户输入的文件循环mv到trash中
    ###for file in $file_list ;do
        #echo $file
        ###提取用户输入参数的文件名、目录名，拼出绝对路径
        file_name=`basename $file`
        file_dir=$(cd `dirname $file`;pwd)
        file_fullpath=$file_dir/$file_name
        ###判断要删除的文件或者目录大小是否超过2G
        #echo file_fullpath: $file_fullpath
        #if [[ "$file_fullpath" == "/*" ]];then
        #    echo action deny!
        #else
        ####判断即将删除的文件在trash目录里是否已存在
        if [[ `ls $trash_dir|grep ^${file_name}$` ]];then
            ##已存在，文件名重复，需要rename，想原始名的基础上加后缀
            trash_dest_path=$trash_dir$file_name$dupfix
            echo trash目录里已存在$file_name,需要rename $file_name$dupfix
        else
            ##不重名，直接按原始文件名保存
            trash_dest_path=$trash_dir$file_name
        fi

        ####判断如果是要删除文件是根目录，则直接提示并拒绝
        if [[ "$file_name" == "/" ]];then
            echo rm拒绝执行删除根目录操作，否则系统就挂了，你就悲剧了，请检查...
        else
            ###mv成功记录log,记录删除时的文件、目录的路径等信息到log，以便恢复数据
            mv $file_fullpath $trash_dest_path && 
            echo $now `date +%s` `whoami` moved from $file_fullpath to $trash_dest_path >> $trash_log && 
            echo -e "33[31m33[05m $file is deleted from $file_fullpath33[0m"
            #cat $trash_log
        fi

        #fi
    ###done
}

###rm list function
rm_list () {
    echo ----------------------------
    echo list trash_dir contents:
    ls $trash_dir
}


###rm restore function
rm_restore () {
    echo ----------------------------
    echo -en "请选择要恢复的文件名(多个文件中间空格分隔,取消ctl+c):"
    read reply
    for file in $reply ;do
        ###判断原始位置的是否有同名文件存在
        originalpath=`cat $trash_log|grep /$file$|awk  '{print $5}'`
        if [[ `ls $originalpath` ]];then
            echo -en "originalpath:$originalpath already exists. continue overwrite or not(y/n):"
            read ack
            if   [[ $ack == y ]];then
                echo restore:
            elif [[ $ack == n ]];then
                echo bye && exit
            else
                echo 输入非法 && exit
            fi
        fi
        ###
        mv $trash_dir$file  $originalpath && 
        ###linux和mac下sed的用法有细微差别，故需通过操作系统类型进行选择对应的sed格式
        if [[ $os_type == Darwin ]];then
            sed -i .bak "//$file$/d" $trash_log
            echo os_type=Darwin
        elif [[ $os_type == Linux ]];then
            sed -i.bak "//$file$/d" $trash_log
            echo os_type=Linux
        fi && 
        echo -e  "33[32m33[05m$file restore ok to originalpath=$originalpath33[0m"
    done
}

### rm show delete log function
rm_infolog () {
    echo ----------------------------
    echo detailed deleted file log:
    cat $trash_log
}


###rm empty trash function
rm_empty () {
    echo ----------------------------
    echo -en "empty trash,all backups in trash will be deleted, continue or not(y/n):"
    read ack
    if   [[ $ack == y ]];then
        echo begin to empty trash:
    elif [[ $ack == n ]];then
        echo bye && exit
    else
        echo 输入非法 && exit
    fi
    /bin/rm -fr ${trash_dir}* && 
    echo >$trash_log && 
    echo -e "33[31m33[05m The trash bin has been emptyed33[0m"
}

###rm delete function
rm_delete () {
    echo ----------------------------
    echo -en "请选择trash中要删除的文件名(多个文件中间空格分隔,取消ctl+c):"
    read reply
        for file in $reply ;do
            ###if file exist then delete it from trash
            if [[ `ls ${trash_dir}$file` ]];then
                /bin/rm -fr ${trash_dir}$file && 
                ###linux和mac下sed的用法有细微差别，故需通过操作系统类型进行选择对应的sed格式
                if [[ $os_type == Darwin ]];then
                    sed -i .bak "//$file$/d" $trash_log
                    echo os_type=Darwin
                elif [[ $os_type == Linux ]];then
                    sed -i.bak "//$file$/d" $trash_log
                    echo os_type=Linux
                fi && 
                    echo -e  "33[32m33[05m$file  is deleted from trash ${trash_dir}$file 33[0m"
            else
                echo $file is not exist in $trash_dir
            fi
        done
}

###清空回收站中30天之前执行rm删除过的文件
rm_delete_by_30_days () {
    rm_mv_30_days_ago_timestamp=$1
    ###30*24*3600=2592000
    #30_days_by_seconds=2592000
    #cat $trash_log|awk 'BEGIN{30_days_by_seconds=2592000}{if()}'
    awk   'END{
        print 时间差:$2-2592000
        {if ($2-2592000>100) print dayu}
    }
    ' $trash_log
}

###跨分区的问题

#####主程序开始
###参数个数为0，输出help
if [ $# -eq 0 ] ;then rm_usage ;fi
###根据用户输入选项执行相应动作
###通过非显示的方式(加入fr选项，但在case里不做匹配操作，遇到含-fr/-rf/-f/-r时直接删除)支持很多用户的使用习惯rm -fr file,rm -rf file
while getopts lRiecdhfr option ;do
case "$option" in
        l) rm_list;;
        R) rm_list
           rm_restore;;
        i) rm_infolog;;
        h) rm_usage;;
        e) rm_empty;;
        c) rm_delete_by_30_days;;
        d) rm_list
           rm_delete;;
        ?)rm_usage
           exit 1;;
    esac
done
shift $((OPTIND-1))

###将文件名的参数依次传递给rm_mv函数
while [ $# -ne 0 ];do
    file=$1
    echo file=$file
    rm_mv
    shift
done