Programming

#include <stdio.h>
void main(void) {
    char cmd1[100];
    char cmd2[100];

    int i=1;
    sprintf(cmd2, "df -h");

while (i<=5)
{ 
    system("dd if=/dev/zero of=/pagefile-%i bs=1024 count=100000", i);
    system(cmd2);
i++;
}

}

#include <stdio.h>
#include <stdlib.h>
int main(void) {
    
    char cmd2[100]={0x0};
    char cmd1[256]={0x0};
    int i=1;
    sprintf(cmd2, "df -h");

while (i<=5)
{ 
    sprintf(cmd1, "dd if=/dev/zero of=/pagefile-%i bs=1024 count=100000", i++);
    system(cmd1);
    system(cmd2);
    
  }
   return 0;
}

#include <stdio.h>
#include <errno.h>
#include <sys/vfs.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define MAX_PHYSIO 128		/* size of phsyical io in blocks */

char *outbuf; 

struct statfs vbuf;

int  main() {

int tickle = 5;  /* how often to print progress based on number of writes  */
int count = 0;
int fd;
long outsize;
int j;

/* create the file */

if( (fd = open("fill.all", O_CREAT | O_WRONLY)) < 0 )
{
	perror("fill.all: ");
	exit(fd);
}

/* get filesystem info */

fstatfs( fd, &vbuf);

outsize = vbuf.f_bsize * MAX_PHYSIO;		/* calculate output size */
outbuf = (char *) malloc(outsize);		/* allocate the buffer */
printf("Free blocks: %d\nOutput Buffer size: %d\n", vbuf.f_bfree, outsize);

j = tickle ;  

while( write(fd, outbuf, outsize) > 0 )
{
	if ( j == 0)
	{
		fstatfs(fd ,&vbuf);
		printf("Blocks left: %d\n", vbuf.f_bfree);
		j = tickle;
	}
	else
		j--;
}

fstatfs( fd, &vbuf);

if (vbuf.f_bfree > 0)
	write(fd, outbuf, vbuf.f_bfree);

printf("done\n");
}