给自己Linux搞个『回收站』，防止文件误删除

linux没有像windows里一样的回收站，工作时候删除文件容易不小心删错，造成麻烦的后果。所以给自己整了个回收站：

文件删除，新建~/opts/move_to_trash.sh，然后在里面新增，将${your_name}改成你的用户名。同时在~/.bashrc中alias rm命令到这个脚本，即是alias rm='sh ~/opts/move_to_trash.sh'，别忘了source ~/.bashrc使其生效。 在删除的时候，会在原文件名字后面新增删除时的时间戳信息。

#!/bin/bash
PARA_CNT=$#
USER_HOME=/home/${your_name}
TRASH_DIR="${USER_HOME}/.trash"   # 指定垃圾箱目录
mkdir -p ${TRASH_DIR}
for i in $*; do
    if [ -f "$i" ] && [ `ls -l $i|awk '{print $5}'` -gt 1073741824 ]; then
        echo "$i size is larger than 1K, can not delete it !"
        continue
    fi
    STAMP=`date +%Y%m%d`      # 删除时间
    fileName=`basename $i`
    mv $i $TRASH_DIR/$fileName.$STAMP   # 删除文件命令，放到垃圾箱
done
echo "remove ${PARA_CNT} file/folder, fetch back if you need at ${TRASH_DIR}"

同时，可以考虑新增一个清除回收站的脚本，定期运行保证空间干净。由于保存了时间戳，时间超过当前7天的文件就可以删除掉了。

#!/bin/bash

KEEP_DAY_DURATION=7

TRASH_PATH="/data1/${your_name}/.trash"
current_date=$(date +%Y%m%d)
date_minus_10=$(date -d "$current_date -${KEEP_DAY_DURATION} days" +%Y%m%d)
ddl_timestamp=$(date -d "$date_minus_10" +%s)
echo "current date is ${current_date}, the files in trash before ${date_minus_10} will be COMPLETELY delete, are your sure?"
read -p "Do you want to continue? (y/n) " answer

case ${answer} in
 [Yy]* )
    echo "deleting..."
    ls -l ${TRASH_PATH} | awk -F " " 'NF==9{print $NF}' > .tmp
    read -ra READ_LIST -d '' < .tmp
    rm .tmp
    for filename in "${READ_LIST[@]}";
    do 
        filedate=`echo ${filename} | awk -F "." '{print $NF}'`
        filedate_stamp=`date -d "$filedate" +%s`
        if [ $filedate_stamp -lt $ddl_timestamp ]; then
            abs_filename="${TRASH_PATH}/${filename}"
            /usr/bin/rm -rf ${abs_filename}
            echo "delete ${abs_filename}"
        fi
    done
 ;;

 [Nn]* )
    echo "skip and exit"
    exit -1
 ;;

 * )
    echo "not valid answer ${answer} and exit"
    exit -1
 ;;
esac