At the very least, collect the following information for each system that you have:
1. Hostname:
% hostname
2. Hostname aliases:
% grep `hostname` /etc/hosts | awk ‘{ print $3 }’
3. Host network addresses:
% grep `hostname` /etc/hosts | awk ‘{ print $1 }’
4. Host ID:
% hostid
5. System serial number:
On the back of most all computers.
6. Manufacturer of the system’s hardware:
On the front of most computers
7. System model name:
On the front of most computers
8. CPU type:
% uname -a
9. Application architecture:
% uname -a
10. Kernel architecture:
% uname -a
11. Amount of main memory:
Can be found at boot time
% dmesg
12. Operating system name:
% uname -a
13. Operating system version:
% uname -a
14. Kernel version:
% uname -a
15. Disk configuration:
% df