$ lsb_release -a
No LSB modules are available.
Distributor ID:    Debian
Description:    Debian GNU/Linux testing (squeeze)
Release:    testing
Codename:    squeeze

 

$ cat /etc/debian_version
squeeze/sid

 

/usr/share/doc/base-files/FAQ:

Q. Ok, but how do I know which distribution I'm running?

A. If you are running testing or unstable, then /etc/debian_version is
not a reliable way to know that anymore. Looking at the contents of
your /etc/apt/sources.list file is probably a much better way.

 

其他相关的或有趣的包还有：

base-files

$ linuxinfo 

$ linuxlogo

 

查看内核版本：

cat   /proc/version

uname   -a