Linux 系统默认文件夹

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 bin：存放普通用户使用的命令；
dev：存放设备文件；
home：普通用户的家；
lost+found：由于断电或者关机保存为处理完成的文件；
net：网络文件系统；
proc：内存数据映像；
sbin：超级用户使用的命令；
srv / tftpboot：网络服务器doc root存放；
usr：第三方应用程序；
boot：kernel, CPU, Memory相关信息；
lib：库文件和模块文件；
etc：配置文件；
media / mnt：用于挂载文件系统；
var：系统日志；
selinux：Linux 策略；
sys：proc的升级

root：超级用户的家

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