1、查看内核版本：cat /proc/version
[root@gjxb default]# cat /proc/version
Linux version 2.6.9-78.8AXS2smp (packager@) (gcc version 3.4.6 0404 (Asianux 2.0 3.4.6-10.1)) #1 SMP Tue Dec 16 02:42:55 EST
2、查看Linux版本：lsb_release -a
[root@gjxb default]# lsb_release -a
LSB Version: 3.0
Distributor ID: Asianux
Description: Asianux release 2.0 (Trinity SP3)
Release: 2.0
Codename: TrinitySP3
3、查看红帽linux的版本：cat /etc/redhat-release
[root@gjxb default]# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 7)
4、查看红帽linux版本：rpm -q redhat-release
[root@gjxb default]# rpm -q redhat-release
redhat-release-4AS-8.1AXS2
5、查看红旗linux版本：cat /etc/redflag-release
[root@gjxb etc]# cat /etc/redflag-release
Red Flag DC Server release 5.0 (Trinity SP3)
6、查看红旗linux版本：rpm -q redflag-release
[root@gjxb etc]# rpm -q redflag-release
redflag-release-5.0-4AXS2
7、修改系统时间：date -s
[root@gjxb etc]# date -s 04/27/13
六 4月 27 00:00:00 CST
[root@gjxb etc]# date -s 11:37:00
六 4月 27 11:37:00 CST
8、把修改的系统时间写到CMOS：clock -w 需root用户登录。
