esystem
if (n = esystem(cmd, ds_fd, -1)) {
if (n = esystem(cmd, ds_fd, -1)) {
if (n = esystem(cmd, ds_fd, -1)) {
extern int esystem(char *cmd, int ifd, int ofd);
n = esystem(cmd, -1, (options & PT_ODTSTREAM) ? ds_fd : -1);
if (n = esystem(tmp_entry, list_fd, ds_fd)) {