How to query System information under CentOS?

How to query system information under CentOS?

Enter "Uname-a" to display information about your computer and your operating system.

Enter "Cat/proc/version" to display the version of the kernel that is running.

Enter "Cat/etc/issue" to display the release version information

Lsb_release-a (for all Linux, including Redhat, SuSE, Debian, etc.), but install LSB in Debian

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szv1000123502:~ # uname-a Linux SZV1000123502 3.0.76-0.11-default #1 SMP Fri June 08:21:43 UTC 2013 (ccab990) x86_64 x86_64 x86_64 gnu/linux szv1000123502:~ # cat/proc/version Linux version 3.0.76-0.11-default (geeko@buildhost) (gcc versi On 4.3.4 [Gcc-4_3-branch revision 152973] (SUSE Linux)) #1 SMP Fri June 08:21:43 UTC 2013 (ccab990) szv1000123502:~ # C At/etc/issue   Welcome to SUSE Linux Enterprise Server-SP3 (x86_64)-Kernel R (L).     szv1000123502:~ # lsb_release-a LSB version:n/a distributor id:suse Linux description:suse Linux ENTERPR Ise Server (x86_64) release:11 codename:n/a szv1000123502:~ #