WS
for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) {
cmd = strtok(buf, WS);
if ((ptr = strtok(NULL, WS)) != NULL) {
if ((ptr = strtok(NULL, WS)) != NULL) {
arg3 = strtok(NULL, WS);
for (disk = strtok(buf, WS); disk; disk = strtok(NULL, WS)) {
cp += strspn(cp, WS);
if ((from = strsep(&cp, WS)) == NULL)
cp += strspn(cp, WS);
if ((to = strsep(&cp, WS)) == NULL)
for (ap = strsep(&cp, WS); ap != NULL;
ap = strsep(&cp, WS))