alias重命名rm-安全刪除

修改/bin/rm的使用，使其安全刪除

### update /home/mobdev/.bashrc ###
alias rm=del  #刪除
alias rl='ls /home/mobdev/.trash/' #陳列垃圾箱
alias ur=undelfile # 恢復刪除文件
alias ct=cleantrash # 清空回收站

undelfile(){
    mv -i /home/mobdev/.trash/$@ ./
}

del(){
    mv $@ /home/mobdev/.trash/
}

cleantrash(){
    read -p "claer trash (Y|N):" confirm
    [ $confirm == 'Y' ] || [ $confirm == 'y' ] && /bin/rm -rfv /home/mobdev/.trash/*
}

source ~/.bashrc