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。
alias log=‘cd /var/log’
安全删除
alias rm=‘trash’
列出回收站
alias rl=‘trash-list’
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