Notes

#include <stdio.h>
#include <string.h>
#include <malloc.h>
char * trim(char *str)
{
while(((unsigned char)*str)==' ') str++;
return str;
}
char* search(char* fileName, char* toSearch, int start, int end, char delim) {
char line[200];
char *result = (char *) malloc(sizeof(char) * 200);
FILE *file = fopen(fileName, "r"); /* should check the result */
while (fgets(line, sizeof(line), file)) {
char *position;
if (toSearch == "")
position = line;
else
position = strstr(line, toSearch);
if (position != NULL) {
if (start == 0 && end == 0) {
char *position2 = position + (int) strlen(toSearch);
if(delim == '')
strcpy(result, position2);
else
{
end = strchr(position2, delim) - position2;
strncpy(result, position2, end);
result[end] = '';
}
} else {
if (delim != '')
end = strchr(position + start, delim) - (position);
strncpy(result, position + start, end - start);
result[end - start] = '';
}
break;
}
}
fclose(file);
return result;
}
int main() {
char * result;
char* result2;
printf("Processorn");
result = search("/proc/cpuinfo", "vendor_id", 0 , 0, '');
printf("tManufacturer:t%s", result+3);
free(result);
result = search("/proc/cpuinfo", "model name", 0 , 0, '');
printf("tModel:tt%s", result+3);
free(result);
result = search("/proc/version", "", 0 , 32, '');
printf("Kernel Version:t%sn", result);
free(result);
result = search("/proc/uptime", "", 0 , 0, ' ');
printf("Time since last boot:t%s sn", result);
free(result);
result = search("/proc/stat", "cpu ", 0 , 0, '');
{
printf("Time spent in:n");
result2 = strtok (result," ,.-");
int i=1;
while (result2 != NULL)
{
switch(i)
{
case 1:
printf ("tUser Mode:t%s x10 msn",result2);
break;
case 3:
printf ("tSystem Mode:t%s x10 msn",result2);
break;
case 4:
printf ("tIdle:tt%s x10 msn",result2);
break;
default:
break;
}
if(i>4)
break;
result2 = strtok (NULL, " ,.-");
i++;
}
}
free(result);
result = search("/proc/meminfo", "MemTotal", 0 , 0, '');
result[0]=' ';
result2 = trim(result);
printf("Total configured Memory:t%s", result2);
free(result);
result = search("/proc/meminfo", "MemAvailable", 0 , 0, '');
result[0]=' ';
result2 = trim(result);
printf("Available Memory:tt%s", result2);
free(result);
return 0;
}