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[31m 33[05m $file is deleted from $file_fullpath 33[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" $trash_log echo os_type=Linux fi && echo -e " 33[32m 33[05m$file restore ok to originalpath=$originalpath 33[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[31m 33[05m The trash bin has been emptyed 33[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" $trash_log echo os_type=Linux fi && echo -e " 33[32m 33[05m$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