diff --git a/sys/src/cmd/rc/plan9.c b/sys/src/cmd/rc/plan9.c
deleted file mode 100644
index 2a1f692..0000000
--- a/sys/src/cmd/rc/plan9.c
+++ /dev/null
@@ -1,606 +0,0 @@
-/*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
-
-/*
- * Plan 9 versions of system-specific functions
- *	By convention, exported routines herein have names beginning with an
- *	upper case letter.
- */
-#include "rc.h"
-#include "exec.h"
-#include "io.h"
-#include "fns.h"
-#include "getflags.h"
-
-enum {
-	Maxenvname = 128,	/* undocumented limit */
-};
-
-char *Signame[] = {
-	"sigexit",	"sighup",	"sigint",	"sigquit",
-	"sigalrm",	"sigkill",	"sigfpe",	"sigterm",
-	0
-};
-char *syssigname[] = {
-	"exit",		/* can't happen */
-	"hangup",
-	"interrupt",
-	"quit",		/* can't happen */
-	"alarm",
-	"kill",
-	"sys: fp: ",
-	"term",
-	0
-};
-char *Rcmain = "/arch/rc/lib/rcmain";
-char *Fdprefix = "/fd/";
-
-void execfinit(void);
-void execbind(void);
-void execmount(void);
-void execnewpgrp(void);
-
-builtin Builtin[] = {
-	"cd",		execcd,
-	"whatis",	execwhatis,
-	"eval",		execeval,
-	"exec",		execexec,	/* but with popword first */
-	"exit",		execexit,
-	"shift",	execshift,
-	"wait",		execwait,
-	".",		execdot,
-	"finit",	execfinit,
-	"flag",		execflag,
-	"rfork",	execnewpgrp,
-	0
-};
-
-void
-execnewpgrp(void)
-{
-	int arg;
-	char *s;
-	switch(count(runq->argv->words)){
-	case 1:
-		arg = RFENVG|RFNAMEG|RFNOTEG;
-		break;
-	case 2:
-		arg = 0;
-		for(s = runq->argv->words->next->word;*s;s++) switch(*s){
-		default:
-			goto Usage;
-		case 'n':
-			arg|=RFNAMEG;  break;
-		case 'N':
-			arg|=RFCNAMEG;
-			break;
-		case 'm':
-			arg|=RFNOMNT;  break;
-		case 'e':
-			arg|=RFENVG;   break;
-		case 'E':
-			arg|=RFCENVG;  break;
-		case 's':
-			arg|=RFNOTEG;  break;
-		case 'f':
-			arg|=RFFDG;    break;
-		case 'F':
-			arg|=RFCFDG;   break;
-		}
-		break;
-	default:
-	Usage:
-		pfmt(err, "Usage: %s [fnesFNEm]\n", runq->argv->words->word);
-		setstatus("rfork usage");
-		poplist();
-		return;
-	}
-	if(rfork(arg)==-1){
-		pfmt(err, "rc: %s failed\n", runq->argv->words->word);
-		setstatus("rfork failed");
-	}
-	else
-		setstatus("");
-	poplist();
-}
-
-void
-Vinit(void)
-{
-	int dir, f, len, i, n, nent;
-	char *buf, *s;
-	char envname[Maxenvname];
-	word *val;
-	Dir *ent;
-
-	dir = open("/env", OREAD);
-	if(dir<0){
-		pfmt(err, "rc: can't open /env: %r\n");
-		return;
-	}
-	ent = nil;
-	for(;;){
-		nent = dirread(dir, &ent);
-		if(nent <= 0)
-			break;
-		for(i = 0; i<nent; i++){
-			len = ent[i].length;
-			if(len && strncmp(ent[i].name, "fn#", 3)!=0){
-				snprint(envname, sizeof envname, "/env/%s", ent[i].name);
-				if((f = open(envname, OREAD))>=0){
-					buf = emalloc(len+1);
-					n = readn(f, buf, len);
-					if (n <= 0)
-						buf[0] = '\0';
-					else
-						buf[n] = '\0';
-					val = 0;
-					/* Charitably add a 0 at the end if need be */
-					if(buf[len-1])
-						buf[len++]='\0';
-					s = buf+len-1;
-					for(;;){
-						while(s!=buf && s[-1]!='\0') --s;
-						val = newword(s, val);
-						if(s==buf)
-							break;
-						--s;
-					}
-					setvar(ent[i].name, val);
-					vlook(ent[i].name)->changed = 0;
-					close(f);
-					free(buf);
-				}
-			}
-		}
-		free(ent);
-	}
-	close(dir);
-}
-
-void
-Xrdfn(void)
-{
-	if(runq->argv->words == 0)
-		poplist();
-	else {
-		int f = open(runq->argv->words->word, OREAD);
-		popword();
-		runq->pc--;
-		if(f >= 0)
-			execcmds(openfd(f));
-	}
-}
-union code rdfns[8];
-
-void
-execfinit(void)
-{
-	static int first = 1;
-	if(first){
-		rdfns[0].i = 1;
-		rdfns[1].f = Xmark;
-		rdfns[2].f = Xglobs;
-		rdfns[4].i = Globsize(rdfns[3].s = "/env/fn#\001*");
-		rdfns[5].f = Xglob;
-		rdfns[6].f = Xrdfn;
-		rdfns[7].f = Xreturn;
-		first = 0;
-	}
-	poplist();
-	start(rdfns, 1, runq->local);
-}
-
-int
-Waitfor(int pid, int n)
-{
-	thread *p;
-	Waitmsg *w;
-	char errbuf[ERRMAX];
-
-	if(pid >= 0 && !havewaitpid(pid))
-		return 0;
-
-	while((w = wait()) != nil){
-		delwaitpid(w->pid);
-		if(w->pid==pid){
-			setstatus(w->msg);
-			free(w);
-			return 0;
-		}
-		for(p = runq->ret;p;p = p->ret)
-			if(p->pid==w->pid){
-				p->pid=-1;
-				strcpy(p->status, w->msg);
-			}
-		free(w);
-	}
-
-	errstr(errbuf, sizeof errbuf);
-	if(strcmp(errbuf, "interrupted")==0) return -1;
-	return 0;
-}
-
-char **
-mkargv(word *a)
-{
-	char **argv = (char **)emalloc((count(a)+2)*sizeof(char *));
-	char **argp = argv+1;	/* leave one at front for runcoms */
-	for(;a;a = a->next) *argp++=a->word;
-	*argp = 0;
-	return argv;
-}
-
-void
-addenv(var *v)
-{
-	char envname[Maxenvname];
-	word *w;
-	int f;
-	io *fd;
-	if(v->changed){
-		v->changed = 0;
-		snprint(envname, sizeof envname, "/env/%s", v->name);
-		if((f = Creat(envname))<0)
-			pfmt(err, "rc: can't open %s: %r\n", envname);
-		else{
-			for(w = v->val;w;w = w->next)
-				write(f, w->word, strlen(w->word)+1L);
-			close(f);
-		}
-	}
-	if(v->fnchanged){
-		v->fnchanged = 0;
-		snprint(envname, sizeof envname, "/env/fn#%s", v->name);
-		if((f = Creat(envname))<0)
-			pfmt(err, "rc: can't open %s: %r\n", envname);
-		else{
-			fd = openfd(f);
-			if(v->fn)
-				pfmt(fd, "fn %q %s\n", v->name, v->fn[v->pc-1].s);
-			closeio(fd);
-		}
-	}
-}
-
-void
-updenvlocal(var *v)
-{
-	if(v){
-		updenvlocal(v->next);
-		addenv(v);
-	}
-}
-
-void
-Updenv(void)
-{
-	var *v, **h;
-	for(h = gvar;h!=&gvar[NVAR];h++)
-		for(v=*h;v;v = v->next)
-			addenv(v);
-	if(runq)
-		updenvlocal(runq->local);
-}
-
-/* not used on plan 9 */
-int
-ForkExecute(char *file, char **argv, int sin, int sout, int serr)
-{
-	return -1;
-}
-
-void
-Execute(word *args, word *path)
-{
-	char **argv = mkargv(args);
-	char file[1024];
-	int nc, mc;
-
-	Updenv();
-	mc = strlen(argv[1])+1;
-	for(;path;path = path->next){
-		nc = strlen(path->word);
-		if(nc + mc >= sizeof file - 1){	/* 1 for / */
-			werrstr("command path name too long");
-			continue;
-		}
-		if(nc > 0){
-			memmove(file, path->word, nc);
-			file[nc++] = '/';
-		}
-		memmove(file+nc, argv[1], mc);
-		exec(file, argv+1);
-	}
-	rerrstr(file, sizeof file);
-	setstatus(file);
-	pfmt(err, "%s: %s\n", argv[1], file);
-	free(argv);
-}
-#define	NDIR	256		/* shoud be a better way */
-
-int
-Globsize(char *p)
-{
-	int isglob = 0, globlen = NDIR+1;
-	for(;*p;p++){
-		if(*p==GLOB){
-			p++;
-			if(*p!=GLOB)
-				isglob++;
-			globlen+=*p=='*'?NDIR:1;
-		}
-		else
-			globlen++;
-	}
-	return isglob?globlen:0;
-}
-#define	NFD	50
-
-struct{
-	Dir	*dbuf;
-	int	i;
-	int	n;
-}dir[NFD];
-
-int
-Opendir(char *name)
-{
-	Dir *db;
-	int f;
-	f = open(name, OREAD);
-	if(f==-1)
-		return f;
-	db = dirfstat(f);
-	if(db!=nil && (db->mode&DMDIR)){
-		if(f<NFD){
-			dir[f].i = 0;
-			dir[f].n = 0;
-		}
-		free(db);
-		return f;
-	}
-	free(db);
-	close(f);
-	return -1;
-}
-
-static int
-trimdirs(Dir *d, int nd)
-{
-	int r, w;
-
-	for(r=w=0; r<nd; r++)
-		if(d[r].mode&DMDIR)
-			d[w++] = d[r];
-	return w;
-}
-
-/*
- * onlydirs is advisory -- it means you only
- * need to return the directories.  it's okay to
- * return files too (e.g., on unix where you can't
- * tell during the readdir), but that just makes
- * the globber work harder.
- */
-int
-Readdir(int f, void *p, int onlydirs)
-{
-	int n;
-
-	if(f<0 || f>=NFD)
-		return 0;
-Again:
-	if(dir[f].i==dir[f].n){	/* read */
-		free(dir[f].dbuf);
-		dir[f].dbuf = 0;
-		n = dirread(f, &dir[f].dbuf);
-		if(n>0){
-			if(onlydirs){
-				n = trimdirs(dir[f].dbuf, n);
-				if(n == 0)
-					goto Again;
-			}
-			dir[f].n = n;
-		}else
-			dir[f].n = 0;
-		dir[f].i = 0;
-	}
-	if(dir[f].i == dir[f].n)
-		return 0;
-	strncpy((char*)p, dir[f].dbuf[dir[f].i].name, NDIR);
-	dir[f].i++;
-	return 1;
-}
-
-void
-Closedir(int f)
-{
-	if(f>=0 && f<NFD){
-		free(dir[f].dbuf);
-		dir[f].i = 0;
-		dir[f].n = 0;
-		dir[f].dbuf = 0;
-	}
-	close(f);
-}
-int interrupted = 0;
-void
-notifyf(void* v, char *s)
-{
-	int i;
-	for(i = 0;syssigname[i];i++) if(strncmp(s, syssigname[i], strlen(syssigname[i]))==0){
-		if(strncmp(s, "sys: ", 5)!=0) interrupted = 1;
-		goto Out;
-	}
-	pfmt(err, "rc: note: %s\n", s);
-	noted(NDFLT);
-	return;
-Out:
-	if(strcmp(s, "interrupt")!=0 || trap[i]==0){
-		trap[i]++;
-		ntrap++;
-	}
-	if(ntrap>=32){	/* rc is probably in a trap loop */
-		pfmt(err, "rc: Too many traps (trap %s), aborting\n", s);
-		abort();
-	}
-	noted(NCONT);
-}
-
-void
-Trapinit(void)
-{
-	notify(notifyf);
-}
-
-void
-Unlink(char *name)
-{
-	remove(name);
-}
-
-int
-Write(int fd, void *buf, int cnt)
-{
-	return write(fd, buf, cnt);
-}
-
-int
-Read(int fd, void *buf, int cnt)
-{
-	return read(fd, buf, cnt);
-}
-
-int
-Seek(int fd, int cnt, int whence)
-{
-	return seek(fd, cnt, whence);
-}
-
-int
-Executable(char *file)
-{
-	Dir *statbuf;
-	int ret;
-
-	statbuf = dirstat(file);
-	if(statbuf == nil)
-		return 0;
-	ret = ((statbuf->mode&0111)!=0 && (statbuf->mode&DMDIR)==0);
-	free(statbuf);
-	return ret;
-}
-
-int
-Creat(char *file)
-{
-	return ocreate(file, OWRITE, 0666L);
-}
-
-int
-Dup(int a, int b)
-{
-	return dup(a, b);
-}
-
-int
-Dup1(int i)
-{
-	return -1;
-}
-
-void
-Exit(char *stat)
-{
-	Updenv();
-	setstatus(stat);
-	exits(truestatus()?"":getstatus());
-}
-
-int
-Eintr(void)
-{
-	return interrupted;
-}
-
-void
-Noerror(void)
-{
-	interrupted = 0;
-}
-
-int
-Isatty(int fd)
-{
-	char buf[64];
-
-	if(fd2path(fd, buf, sizeof buf) != 0)
-		return 0;
-
-	/* might be #c/cons during boot - fixed 22 april 2005, remove this later */
-	if(strcmp(buf, "#c/cons") == 0)
-		return 1;
-
-	/* might be /mnt/term/dev/cons */
-	return strlen(buf) >= 9 && strcmp(buf+strlen(buf)-9, "/dev/cons") == 0;
-}
-
-void
-Abort(void)
-{
-	pfmt(err, "aborting\n");
-	flush(err);
-	Exit("aborting");
-}
-
-int *waitpids;
-int nwaitpids;
-
-void
-addwaitpid(int pid)
-{
-	waitpids = erealloc(waitpids, (nwaitpids+1)*sizeof waitpids[0]);
-	waitpids[nwaitpids++] = pid;
-}
-
-void
-delwaitpid(int pid)
-{
-	int r, w;
-
-	for(r=w=0; r<nwaitpids; r++)
-		if(waitpids[r] != pid)
-			waitpids[w++] = waitpids[r];
-	nwaitpids = w;
-}
-
-void
-clearwaitpids(void)
-{
-	nwaitpids = 0;
-}
-
-int
-havewaitpid(int pid)
-{
-	int i;
-
-	for(i=0; i<nwaitpids; i++)
-		if(waitpids[i] == pid)
-			return 1;
-	return 0;
-}
-
-/* avoid loading any floating-point library code */
-int
-_efgfmt(Fmt *f)
-{
-	return -1;
-}