List number of inodes for file system and how many spare.

inodes.c

#include <stdio.h>
#include <stdlib.h>
#include <sys/statvfs.h>

int main(int argc, char **argv)
{
        struct statvfs _statvfs;

        if ( argc != 2 )
        {
                printf("Just the one argument please\n");
                exit(1);
        }

        if ( statvfs( argv[1] , &_statvfs ) != 0 ) {
                printf("Something went wrong. Is %s a valid mount point?\n", argv[1]);
                exit(2);
        }

        printf("inodes\t%lld\nfree\t%lld\nufree\t%lld\n",
                (long long) _statvfs.f_files,
                (long long) _statvfs.f_ffree,
                (long long) _statvfs.f_favail );

        exit(0);
}