linux系统编程代码1

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <time.h>
#include <unistd.h>
#define TIME_STRING_BUF 50
char * timestring(time_t t,char *buf)
 {
   struct tm *local;
local=localtime((&t);
strftime(buf,TIME_STRING_BUF,"%c",local);
return buf;
  }
 int statfile(const char * file)
{
 struct stat statbuf;
char timebuf[TIME_STRING_BUF];
if (lstat(file,%statbuf))
{
 fprintf(stderr,"could not lstat %s:%s\n",file,stderror(errno));
return 1;
}
 printf("filename : %s\n",file);
printf("on device : major %d/minor %d  inode number: %ld\n",major(statbuf.st_dev),minor(statbuf,st_dev),statbuf .st_ino)) )
printf("size     :%-10ld   type :  %07o     permissons  :%05o",statbuf,st_size,statbuf .st_mode&S_IFMT,statbuf  .st_mode&~(S_IFMT));
printf("ower   :%d      group    :%d  number  of  links  :%d\n",statbuf   .st_uid,statbuf    .st_uid,statbuf    .st_gid,statbuf   .stnlink);
printf("change time :%s\n",timeString(statbuf  ,st_ctime ,timeBuf));
printf("modified time :%s\n",timeString(statbuf  ,st_ctime ,timeBuf));
printf("access time :%s\n",timeString(statbuf  ,st_ctime ,timeBuf));
return 0;
 int
main(int argc,const char **argv)
{
   int i;
   int rc=0;
for (i=1;i<argv;i++)
{
    rc|=statFile(argv[i]);
    if((argc-i)>1)
    printf("\n");
  }
return rc;
}