Does anyone know how to do this?
Write a program to report the behavior of the Linux kernel. Your program should have three different options. The default version should print the following values

on the stdout:
•Processor type
•Kernel version
•Amount of time since the system was last booted

what language ?!
/proc/cpuinfo
uname -r
uptime

i need to make a program that does those three things. not the command lines. it has to be in C as well. thanks.

well d00d to me this sounds like your homework ...
just how you asked the question ... thats the feeling i get ...
so before we start getting into the code, why don't you show us what you have done so far and where you are getting hung up at ... i think that'll be the best place to start ...

wow d00d you must be super smart to figure that one out. it is my hw, but i figured some of it. heres what i ahve so far.

#include <stdio.h>
#include <sys/utsname.h>

int main ()
{
struct utsname u;
uname (&u);
printf ("%s release %s (version %s) on %s\n", u.sysname, u.release,
u.version, u.machine);
return 0;
}

and i have this,
#include <linux/kernel.h>
#include <linux/sys.h>
#include <stdio.h>
#include <sys/sysinfo.h>

int main ()
{
/* Conversion constants. */
const long minute = 60;
const long hour = minute * 60;
const long day = hour * 24;
const double megabyte = 1024 * 1024;
/* Obtain system statistics. */
struct sysinfo si;
sysinfo (&si);
/* Summarize interesting values. */
printf ("system uptime : %ld days, %ld:%02ld:%02ld\n",
si.uptime / day, (si.uptime % day) / hour,
(si.uptime % hour) / minute, si.uptime % minute);
printf ("total RAM : %5.1f MB\n", si.totalram / megabyte);
printf ("free RAM : %5.1f MB\n", si.freeram / megabyte);
printf ("process count : %d\n", si.procs);
return 0;
}


so i did some work. wanna help me figure out the rest of it?
A second version of the program should print the same information as the first
version plus:
•The amount of time processor has spent in user mode, system mode, ad the
amount amount of time the system was idle
•The number of disk read / write request made on the system
•The number of context switches the kernel has performed
•The time at which the system was last booted
•The number of processes that have been created since the system was booted.

man times for the processor times, and man proc for all that other stuff.

Get the source code of uptime, that'll help with most of the stuff. It's
probably in binutils or shellutils. To get information about the cpu, you
may use x86 instruction cpuinf.


HTH