[root@localhost ~]# cat /proc/version
Linux version 2.6.18-194.el5 (mockbuild@https://www.doczj.com/doc/b511981322.html,) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Fri Apr 2 14:58:35 EDT 2010
[root@localhost ~]# uname -a
Linux localhost.localdomain 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:35 EDT 2010 i686 i686 i386 GNU/Linux
[root@localhost ~]# uname -r
2.6.18-194.el5
[root@localhost ~]# lsb_release -a
LSB Version: :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: CentOS
Description: CentOS release 5.5 (Final)
Release: 5.5
Codename: Final
[root@localhost ~]# cat /etc/redhat-release
CentOS release 5.5 (Final)
[root@localhost ~]# rpm -q redhat-release
package redhat-release is not installed
file /bin/ls
显示系统程序信息，就能看出多少位