#include <stdio.h>
#include <string.h>

int main( int argc, char *argv[] )
{
    /* No file supplied? */
    if ( argc == 1 )
    {
        puts( "\nYou must supply a file to parse\n" );
        return 1;
    }

    /* Open the file, read-only */
    FILE *file = fopen( argv[1], "r" );

    /* If the file exists... */
    if ( file != NULL )
    {
        char line[256];
        char del[] = " ";

        /* While we can read a line from the file... */
        while ( fgets( line, sizeof line, file ) != NULL )
        {
            /* Convert each line in to tokens */
            char *result = NULL;
            result = strtok( line, del );
            int tkn = 1;

            /* "Foreach" token... */
            while( result != NULL )
            {
                /* If tkn matches our list, then print */
                /* $1, $2, $4, $6, $11, $12, $13 */
                if  (
                        tkn == 1 || tkn == 2 || tkn == 3 ||
                        tkn == 4 || tkn == 6 || tkn == 11 ||
                        tkn == 12 || tkn == 13
                    )
                {
                    printf( "%s ", result );
                }
                tkn++;
                result = strtok( NULL, del );
            }
        }
        fclose( file );
    } else {
        printf( "%s", argv[1] );
    }
    return 0;
}