* xcp(f1, f2) copy f1 to f2
* return - 0 ok | FAIL failed
if ((fp1
= fopen(f1
, "r")) == NULL
)
if ((fp2
= fopen(f2
, "w")) == NULL
) {
while((len
= fread(buf
, sizeof (char), BUFSIZ
, fp1
)) > 0)
fwrite(buf
, sizeof (char), len
, fp2
);
* xmv(f1, f2) move f1 to f2
* return 0 ok | FAIL failed