如何避免命令 rm -rf 的悲剧

一、root高管用户为例，其他用户类同。

https://www.cnblogs.com/eos666/articles/10389179.html

[root@jenkins /]# vim /root/.bashrc

# .bashrc

# User specific aliases and functions

# alias rm='rm -i' # 修改成
alias rm='pwd && 
read -p "Are you sure?" y && [ $y == "y" ] && 
read -p "Are you sure?" y && [ $y == "y" ] && 
read -p "Are you sure?" y && [ $y == "y" ] && 
rm -i'
alias cp='cp -i'
alias mv='mv -i'


# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi

source /root/.barshrc

二、测试

[root@jenkins /]# pwd
/

示例一
[root@jenkins /]# rm -rf *
/
Are you sure?n

示例二

[root@jenkins /]# rm -rf *
/
Are you sure?y
Are you sure?n

示例三

[root@jenkins /]# rm -rf /*
/
Are you sure?y
Are you sure?y
Are you sure?n

示例四
[root@jenkins /]# rm -rf /*
/
Are you sure?y
Are you sure?y
Are you sure?y

三、结果

示例一、二、三，不会删除根目录下的目录及文件。
示例四，3次确认后会直接把根目录下的所有目录及文件都删除掉，出大事了。

在 /tmp 目录下的测试，看截图：