procstat
struct procstat ps;
jp->ps = ckmalloc(nprocs * sizeof (struct procstat));
struct procstat *ps = &jp->ps[jp->nprocs++];
struct procstat *sp;
commandtext(struct procstat *ps, union node *n)
struct procstat *ps;
struct procstat *ps;
void commandtext(struct procstat *, union node *);
struct procstat ps0; /* status of process */
struct procstat *ps; /* status or processes when more than one */