UNIX for Dummies Questions & Answers

How to know configuration information of the system.

like

(1) memory assigned for RAM - ?
(2) How much is the Hard disk -?
(3) processor

I used uname and du -k commands. But i couldn't get information about RAM.

which command gives this info

There is a utility program called "top"
that will give you all sorts of information
including memory and swapspace...

11:49am up 80 days, 22:35, 2 users, load average: 0.08, 0.03, 0.00
57 processes: 55 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: 0.0% user, 0.1% system, 0.0% nice, 99.8% idle
Mem: 513536K av, 197540K used, 315996K free, 0K shrd, 24764K buff
Swap: 1542200K av, 0K used, 1542200K free 94740K cached

...you may or may not have it on your system.
you can get it at:
http://bioinfo1.mbfys.lu.se/TOP/ftptop.html

Oops!!!

Sorry, I gave you the wrong URL before.
This is the right one:
http://www.groupsys.com/topinfo/

What exact version and flovor of UNIX are you using. There are different utilities which are specific to an OS to give system information. In Solaris, dmesg will give a lot of info, as will prtdiag. Read the man page on them, the path to prtdiag has a hardware dependancy. mpstat will give processor info.