将rm -f or -rf 删除命令改为放入回收站，并可通过命令将其撤回

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1.sudo gedit ~/.bashrc,添加如下部分

#rm -rf/f filename protected
alias rm=trash
alias r=trash
alias rl='ls /home/lijian/.local/share/Trash/files'
alias ur=undelfile

#ur recovery the files
undelfile()
{
  strpath=$(sudo cat /home/lijian/.local/share/Trash/info/*.trashinfo)
  sudo mv -i /home/lijian/.local/share/Trash/files/$@  $strpath/
  sudo rm -rf /home/lijian/.local/share/Trash/info/*
}

#rm move the files to trash
trash()
{
  trashinfo=($@'.trashinfo')
  touch /home/lijian/.local/share/Trash/info/$trashinfo
  directory=$(pwd)
  echo $directory |sudo tee /home/lijian/.local/share/Trash/info/$trashinfo
  sudo mv $@ /home/lijian/.local/share/Trash/files/
}

#cleartrash delete the files in trash
cleartrash()
{
  read -p "clear sure?[Y] or [N]" confirm
  [ $confirm == 'y' ] || [ $confirm == 'Y' ] && sudo rm -rf /home/lijian/.local/share/Trash/files/*
}

2.source ~/.bashrc 立即生效。