玩过Linux的同学应该都知道这个要命的命令，此命令一出，系统几乎废了。

rm -rf /

虽然一再强调rm的时候要注意，但是还是会有同学犯错误删文件，有什么办法能够减少此类事情的发生呢？

今天老高就要介绍此工具----- trash-cli。他实现了类似回收站的功能，以后删除的时候就有了后悔药。

trash-cli的项目地址 trash-cli

安装

trash-cli的安装很简单

cd /tmp
https://github.com/andreafrancia/trash-cli
cd trash-cli
sudo python setup.py install

安装成功后我们的系统就有了以下工具

➜  ~  ll /usr/bin/|grep trash
-rwxr-xr-x   1 root root     123  5月 28 19:38 trash
-rwxr-xr-x   1 root root     125  5月 28 19:38 trash-empty
-rwxr-xr-x   1 root root     124  5月 28 19:38 trash-list
-rwxr-xr-x   1 root root     123  5月 28 19:38 trash-put
-rwxr-xr-x   1 root root     127  5月 28 19:38 trash-restore
-rwxr-xr-x   1 root root     122  5月 28 19:38 trash-rm

功能说明

trash == trash-put == 删除
trash-empty 清空
trash-list 列出回收站
trash-restore 恢复文件
trash-rm  删除回收站中指定文件

如何使用

替换命令

为了安全着想，我们先将rm命令替换为trash

vim /etc/bashrc

添加以下内容，替换系统删除命令。

根据作者的README文件，建议还是轻易不要把rm做替换，下面的替换作废。

作者原文

Can I alias rm to trash-put? You can but you shouldn't. In the early days I thought it was good idea do that but now I changed my mind. The interface of trash-put seems to be compatible with rm it has a different semantic that will cause you problems. For example, while rm requires -R for deleting directories trash-put does not. But sometimes I forgot to use trash-put, really can't I? You may alias rm to something that will remind you to not use it: alias rm='echo "This is not the command you are looking for."; false' If you really want use rm simply prepend a slash: \rm file-without-hope Note that Bash aliases are used only in interactive shells, so using this alias should not interfere with scripts that expects to use rm.

所以新的替换是

# 使用rm前确认
alias rm='echo " This is not the command you are looking for.If you really want use rm simply prepend a slash"; false'

以后执行rm的话，就会出现以下情况

➜  ~  rm
 This is not the command you are looking for.If you really want use rm simply prepend a slash

以后如果真的要删除的话，请使用\rm 真的很没用的文件，而使用trash 需要删除的文件。

完成后输入source /etc/bashrc是修改的别名生效。

常用操作

# 安全删除
rm ./*

# 查看回收站
➜  /tmp  rl
2015-05-28 19:59:54 /tmp/redis-stable

# 清空回收站
trash-empty

# 清空10天以前放入回收站的文件
trash-empty 10

# 还原文件
➜  /tmp  trash-restore
   0 2015-05-28 19:59:54 /tmp/redis-stable
What file to restore [0..0]: 输入对应序号还原