ref: fe2d9dd6c3818c8fce1c527f0dcc9784dbea7118
dir: /sys/src/cmd/upas/fs/extra/paw.c/
#include<u.h>
#include<libc.h>
#include<bio.h>
void
main(void)
{
char *f[10], *s;
vlong sum;
Biobuf b;
sum = 0;
Binit(&b, 0, OREAD);
while(s = Brdstr(&b, '\n', 1)){
if(getfields(s, f, nelem(f), 1, " ") > 2)
sum += strtoul(f[2], 0, 0);
free(s);
}
Bterm(&b);
print("%lld\n", sum);
exits("");
}