l1b.c

显示linux中cpu型号等的方法和显示版本信息。

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

 main(){
  int i;
  char char_all[80]; 
  char *model_name="model name";
  char *vendor_id="vendor_id";
  char *p;
  FILE *cptr;
  long t;
  int temp=0;  
  int day=0;
  int hours=0;
  int minutes=0;
  int seconds=0; 
  struct utsname buf;
  //1
  cptr=fopen("/proc/cpuinfo","r");
  //printf("\n");  
  for(i=0;i<20;i++){ 
     fgets(char_all,80,cptr);
     p=strstr(char_all,model_name);
     if(p){
       printf("%s",char_all);  
       //break;
     }
     //printf("%s\n",char_all);
     if(strstr(char_all,vendor_id))
       {printf("%s",char_all); 
        //  break;
      }
  }//for
  fclose(cptr);
  // 2
  uname(&buf);
  printf("%s\n%s\n",buf.version,buf.release);
  //system("cat /proc/version");
  
  //3
  cptr=fopen("/proc/uptime","r");
  fscanf(cptr,"%ld",&t);  
  day=t/86400;
  temp=t%86400;
  hours=temp/3600;
  temp=temp%3600;
  minutes=temp/60;
  temp=temp%60;
  seconds=temp;  
  printf("time: %d:%d:%d:%d:\n",day,hours,minutes,seconds);
  fclose(cptr); 

}