1 /* 2 * Copyright (c) 1987, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1987, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)man.c 8.16 (Berkeley) 4/16/94"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/queue.h> 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <errno.h> 50 #include <fcntl.h> 51 #include <fnmatch.h> 52 #include <glob.h> 53 #include <signal.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <unistd.h> 58 59 #include "config.h" 60 #include "pathnames.h" 61 62 int f_all, f_where; 63 64 static void build_page __P((char *, char **)); 65 static void cat __P((char *)); 66 static char *check_pager __P((char *)); 67 static int cleanup __P((void)); 68 static void how __P((char *)); 69 static void jump __P((char **, char *, char *)); 70 static int manual __P((char *, TAG *, glob_t *)); 71 static void onsig __P((int)); 72 static void usage __P((void)); 73 74 int 75 main(argc, argv) 76 int argc; 77 char *argv[]; 78 { 79 extern char *optarg; 80 extern int optind; 81 TAG *defp, *defnewp, *section, *sectnewp, *subp; 82 ENTRY *e_defp, *e_sectp, *e_subp, *ep; 83 glob_t pg; 84 size_t len; 85 int ch, f_cat, f_how, found; 86 char **ap, *cmd, *machine, *p, *p_add, *p_path, *pager, *slashp; 87 char *conffile, buf[MAXPATHLEN * 2]; 88 89 f_cat = f_how = 0; 90 conffile = p_add = p_path = NULL; 91 while ((ch = getopt(argc, argv, "-aC:cfhkM:m:P:w")) != EOF) 92 switch (ch) { 93 case 'a': 94 f_all = 1; 95 break; 96 case 'C': 97 conffile = optarg; 98 break; 99 case 'c': 100 case '-': /* Deprecated. */ 101 f_cat = 1; 102 break; 103 case 'h': 104 f_how = 1; 105 break; 106 case 'm': 107 p_add = optarg; 108 break; 109 case 'M': 110 case 'P': /* Backward compatibility. */ 111 p_path = optarg; 112 break; 113 /* 114 * The -f and -k options are backward compatible, 115 * undocumented ways of calling whatis(1) and apropos(1). 116 */ 117 case 'f': 118 jump(argv, "-f", "whatis"); 119 /* NOTREACHED */ 120 case 'k': 121 jump(argv, "-k", "apropos"); 122 /* NOTREACHED */ 123 case 'w': 124 f_all = f_where = 1; 125 break; 126 case '?': 127 default: 128 usage(); 129 } 130 argc -= optind; 131 argv += optind; 132 133 if (!*argv) 134 usage(); 135 136 if (!f_cat && !f_how && !f_where) 137 if (!isatty(1)) 138 f_cat = 1; 139 else if ((pager = getenv("PAGER")) != NULL) 140 pager = check_pager(pager); 141 else 142 pager = _PATH_PAGER; 143 144 /* Read the configuration file. */ 145 config(conffile); 146 147 /* Get the machine type. */ 148 if ((machine = getenv("MACHINE")) == NULL) 149 machine = MACHINE; 150 151 /* If there's no _default list, create an empty one. */ 152 if ((defp = getlist("_default")) == NULL) 153 defp = addlist("_default"); 154 155 /* 156 * 1: If the user specified a MANPATH variable, or set the -M 157 * option, we replace the _default list with the user's list, 158 * appending the entries in the _subdir list and the machine. 159 */ 160 if (p_path == NULL) 161 p_path = getenv("MANPATH"); 162 if (p_path != NULL) { 163 while ((e_defp = defp->list.tqh_first) != NULL) { 164 free(e_defp->s); 165 TAILQ_REMOVE(&defp->list, e_defp, q); 166 } 167 for (p = strtok(p_path, ":"); 168 p != NULL; p = strtok(NULL, ":")) { 169 slashp = p[strlen(p) - 1] == '/' ? "" : "/"; 170 e_subp = (subp = getlist("_subdir")) == NULL ? 171 NULL : subp->list.tqh_first; 172 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) { 173 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}", 174 p, slashp, e_subp->s, machine); 175 if ((ep = malloc(sizeof(ENTRY))) == NULL || 176 (ep->s = strdup(buf)) == NULL) 177 err(1, NULL); 178 TAILQ_INSERT_TAIL(&defp->list, ep, q); 179 } 180 } 181 } 182 183 /* 184 * 2: If the user did not specify MANPATH, -M or a section, rewrite 185 * the _default list to include the _subdir list and the machine. 186 */ 187 if (argv[1] == NULL) 188 section = NULL; 189 else if ((section = getlist(*argv)) != NULL) 190 ++argv; 191 if (p_path == NULL && section == NULL) { 192 defnewp = addlist("_default_new"); 193 e_defp = 194 defp->list.tqh_first == NULL ? NULL : defp->list.tqh_first; 195 for (; e_defp != NULL; e_defp = e_defp->q.tqe_next) { 196 slashp = 197 e_defp->s[strlen(e_defp->s) - 1] == '/' ? "" : "/"; 198 e_subp = (subp = getlist("_subdir")) == NULL ? 199 NULL : subp->list.tqh_first; 200 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) { 201 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}", 202 e_defp->s, slashp, e_subp->s, machine); 203 if ((ep = malloc(sizeof(ENTRY))) == NULL || 204 (ep->s = strdup(buf)) == NULL) 205 err(1, NULL); 206 TAILQ_INSERT_TAIL(&defnewp->list, ep, q); 207 } 208 } 209 defp = getlist("_default"); 210 while ((e_defp = defp->list.tqh_first) != NULL) { 211 free(e_defp->s); 212 TAILQ_REMOVE(&defp->list, e_defp, q); 213 } 214 free(defp->s); 215 TAILQ_REMOVE(&head, defp, q); 216 defnewp = getlist("_default_new"); 217 free(defnewp->s); 218 defnewp->s = "_default"; 219 defp = defnewp; 220 } 221 222 /* 223 * 3: If the user set the -m option, insert the user's list before 224 * whatever list we have, again appending the _subdir list and 225 * the machine. 226 */ 227 if (p_add != NULL) 228 for (p = strtok(p_add, ":"); p != NULL; p = strtok(NULL, ":")) { 229 slashp = p[strlen(p) - 1] == '/' ? "" : "/"; 230 e_subp = (subp = getlist("_subdir")) == NULL ? 231 NULL : subp->list.tqh_first; 232 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) { 233 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}", 234 p, slashp, e_subp->s, machine); 235 if ((ep = malloc(sizeof(ENTRY))) == NULL || 236 (ep->s = strdup(buf)) == NULL) 237 err(1, NULL); 238 TAILQ_INSERT_HEAD(&defp->list, ep, q); 239 } 240 } 241 242 /* 243 * 4: If no -m was specified, and a section was, rewrite the section's 244 * paths (if they have a trailing slash) to append the _subdir list 245 * and the machine. This then becomes the _default list. 246 */ 247 if (p_add == NULL && section != NULL) { 248 sectnewp = addlist("_section_new"); 249 for (e_sectp = section->list.tqh_first; 250 e_sectp != NULL; e_sectp = e_sectp->q.tqe_next) { 251 if (e_sectp->s[strlen(e_sectp->s) - 1] != '/') { 252 (void)snprintf(buf, sizeof(buf), 253 "%s{/%s,}", e_sectp->s, machine); 254 if ((ep = malloc(sizeof(ENTRY))) == NULL || 255 (ep->s = strdup(buf)) == NULL) 256 err(1, NULL); 257 TAILQ_INSERT_TAIL(§newp->list, ep, q); 258 continue; 259 } 260 e_subp = (subp = getlist("_subdir")) == NULL ? 261 NULL : subp->list.tqh_first; 262 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) { 263 (void)snprintf(buf, sizeof(buf), "%s%s{/%s,}", 264 e_sectp->s, e_subp->s, machine); 265 if ((ep = malloc(sizeof(ENTRY))) == NULL || 266 (ep->s = strdup(buf)) == NULL) 267 err(1, NULL); 268 TAILQ_INSERT_TAIL(§newp->list, ep, q); 269 } 270 } 271 sectnewp->s = section->s; 272 defp = sectnewp; 273 TAILQ_REMOVE(&head, section, q); 274 } 275 276 /* 277 * 5: Search for the files. Set up an interrupt handler, so the 278 * temporary files go away. 279 */ 280 (void)signal(SIGINT, onsig); 281 (void)signal(SIGHUP, onsig); 282 283 memset(&pg, 0, sizeof(pg)); 284 for (found = 0; *argv; ++argv) 285 if (manual(*argv, defp, &pg)) 286 found = 1; 287 288 /* 6: If nothing found, we're done. */ 289 if (!found) { 290 (void)cleanup(); 291 exit (1); 292 } 293 294 /* 7: If it's simple, display it fast. */ 295 if (f_cat) { 296 for (ap = pg.gl_pathv; *ap != NULL; ++ap) { 297 if (**ap == '\0') 298 continue; 299 cat(*ap); 300 } 301 exit (cleanup()); 302 } 303 if (f_how) { 304 for (ap = pg.gl_pathv; *ap != NULL; ++ap) { 305 if (**ap == '\0') 306 continue; 307 how(*ap); 308 } 309 exit(cleanup()); 310 } 311 if (f_where) { 312 for (ap = pg.gl_pathv; *ap != NULL; ++ap) { 313 if (**ap == '\0') 314 continue; 315 (void)printf("%s\n", *ap); 316 } 317 exit(cleanup()); 318 } 319 320 /* 321 * 8: We display things in a single command; build a list of things 322 * to display. 323 */ 324 for (ap = pg.gl_pathv, len = strlen(pager) + 1; *ap != NULL; ++ap) { 325 if (**ap == '\0') 326 continue; 327 len += strlen(*ap) + 1; 328 } 329 if ((cmd = malloc(len)) == NULL) { 330 warn(NULL); 331 (void)cleanup(); 332 exit(1); 333 } 334 p = cmd; 335 len = strlen(pager); 336 memmove(p, pager, len); 337 p += len; 338 *p++ = ' '; 339 for (ap = pg.gl_pathv; *ap != NULL; ++ap) { 340 if (**ap == '\0') 341 continue; 342 len = strlen(*ap); 343 memmove(p, *ap, len); 344 p += len; 345 *p++ = ' '; 346 } 347 *p = '\0'; 348 349 /* Use system(3) in case someone's pager is "pager arg1 arg2". */ 350 (void)system(cmd); 351 352 exit(cleanup()); 353 } 354 355 /* 356 * manual -- 357 * Search the manuals for the pages. 358 */ 359 static int 360 manual(page, tag, pg) 361 char *page; 362 TAG *tag; 363 glob_t *pg; 364 { 365 ENTRY *ep, *e_sufp, *e_tag; 366 TAG *missp, *sufp; 367 int anyfound, cnt, found; 368 char *p, buf[128]; 369 370 anyfound = 0; 371 buf[0] = '*'; 372 373 /* For each element in the list... */ 374 e_tag = tag == NULL ? NULL : tag->list.tqh_first; 375 for (; e_tag != NULL; e_tag = e_tag->q.tqe_next) { 376 (void)snprintf(buf, sizeof(buf), "%s/%s.*", e_tag->s, page); 377 if (glob(buf, 378 GLOB_APPEND | GLOB_BRACE | GLOB_NOSORT | GLOB_QUOTE, 379 NULL, pg)) { 380 warn("globbing"); 381 (void)cleanup(); 382 exit(1); 383 } 384 if (pg->gl_matchc == 0) 385 continue; 386 387 /* Find out if it's really a man page. */ 388 for (cnt = pg->gl_pathc - pg->gl_matchc; 389 cnt < pg->gl_pathc; ++cnt) { 390 391 /* 392 * Try the _suffix key words first. 393 * 394 * XXX 395 * Older versions of man.conf didn't have the suffix 396 * key words, it was assumed that everything was a .0. 397 * We just test for .0 first, it's fast and probably 398 * going to hit. 399 */ 400 (void)snprintf(buf, sizeof(buf), "*/%s.0", page); 401 if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) 402 goto next; 403 404 e_sufp = (sufp = getlist("_suffix")) == NULL ? 405 NULL : sufp->list.tqh_first; 406 for (found = 0; 407 e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) { 408 (void)snprintf(buf, 409 sizeof(buf), "*/%s%s", page, e_sufp->s); 410 if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) { 411 found = 1; 412 break; 413 } 414 } 415 if (found) 416 goto next; 417 418 /* Try the _build key words next. */ 419 e_sufp = (sufp = getlist("_build")) == NULL ? 420 NULL : sufp->list.tqh_first; 421 for (found = 0; 422 e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) { 423 for (p = e_sufp->s; 424 *p != '\0' && !isspace(*p); ++p); 425 if (*p == '\0') 426 continue; 427 *p = '\0'; 428 (void)snprintf(buf, 429 sizeof(buf), "*/%s%s", page, e_sufp->s); 430 if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) { 431 if (!f_where) 432 build_page(p + 1, 433 &pg->gl_pathv[cnt]); 434 *p = ' '; 435 found = 1; 436 break; 437 } 438 *p = ' '; 439 } 440 if (found) { 441 next: anyfound = 1; 442 if (!f_all) { 443 /* Delete any other matches. */ 444 while (++cnt< pg->gl_pathc) 445 pg->gl_pathv[cnt] = ""; 446 break; 447 } 448 continue; 449 } 450 451 /* It's not a man page, forget about it. */ 452 pg->gl_pathv[cnt] = ""; 453 } 454 455 if (anyfound && !f_all) 456 break; 457 } 458 459 /* If not found, enter onto the missing list. */ 460 if (!anyfound) { 461 if ((missp = getlist("_missing")) == NULL) 462 missp = addlist("_missing"); 463 if ((ep = malloc(sizeof(ENTRY))) == NULL || 464 (ep->s = strdup(page)) == NULL) { 465 warn(NULL); 466 (void)cleanup(); 467 exit(1); 468 } 469 TAILQ_INSERT_TAIL(&missp->list, ep, q); 470 } 471 return (anyfound); 472 } 473 474 /* 475 * build_page -- 476 * Build a man page for display. 477 */ 478 static void 479 build_page(fmt, pathp) 480 char *fmt, **pathp; 481 { 482 static int warned; 483 ENTRY *ep; 484 TAG *intmpp; 485 int fd, n; 486 char *p, *b; 487 char buf[MAXPATHLEN], cmd[MAXPATHLEN], tpath[sizeof(_PATH_TMP)]; 488 489 /* Let the user know this may take awhile. */ 490 if (!warned) { 491 warned = 1; 492 warnx("Formatting manual page..."); 493 } 494 495 /* 496 * Historically man chdir'd to the root of the man tree. 497 * This was used in man pages that contained relative ".so" 498 * directives (including other man pages for command aliases etc.) 499 * It even went one step farther, by examining the first line 500 * of the man page and parsing the .so filename so it would 501 * make hard(?) links to the cat'ted man pages for space savings. 502 * (We don't do that here, but we could). 503 */ 504 505 /* copy and find the end */ 506 for (b = buf, p = *pathp; (*b++ = *p++) != '\0';) 507 continue; 508 509 /* skip the last two path components, page name and man[n] */ 510 for (--b, n = 2; b != buf; b--) 511 if (*b == '/') 512 if (--n == 0) { 513 *b = '\0'; 514 (void) chdir(buf); 515 } 516 517 /* Add a remove-when-done list. */ 518 if ((intmpp = getlist("_intmp")) == NULL) 519 intmpp = addlist("_intmp"); 520 521 /* Move to the printf(3) format string. */ 522 for (; *fmt && isspace(*fmt); ++fmt) 523 continue; 524 525 /* 526 * Get a temporary file and build a version of the file 527 * to display. Replace the old file name with the new one. 528 */ 529 (void)strcpy(tpath, _PATH_TMP); 530 if ((fd = mkstemp(tpath)) == -1) { 531 warn("%s", tpath); 532 (void)cleanup(); 533 exit(1); 534 } 535 (void)snprintf(buf, sizeof(buf), "%s > %s", fmt, tpath); 536 (void)snprintf(cmd, sizeof(cmd), buf, *pathp); 537 (void)system(cmd); 538 (void)close(fd); 539 if ((*pathp = strdup(tpath)) == NULL) { 540 warn(NULL); 541 (void)cleanup(); 542 exit(1); 543 } 544 545 /* Link the built file into the remove-when-done list. */ 546 if ((ep = malloc(sizeof(ENTRY))) == NULL) { 547 warn(NULL); 548 (void)cleanup(); 549 exit(1); 550 } 551 ep->s = *pathp; 552 TAILQ_INSERT_TAIL(&intmpp->list, ep, q); 553 } 554 555 /* 556 * how -- 557 * display how information 558 */ 559 static void 560 how(fname) 561 char *fname; 562 { 563 FILE *fp; 564 565 int lcnt, print; 566 char *p, buf[256]; 567 568 if (!(fp = fopen(fname, "r"))) { 569 warn("%s", fname); 570 (void)cleanup(); 571 exit (1); 572 } 573 #define S1 "SYNOPSIS" 574 #define S2 "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS" 575 #define D1 "DESCRIPTION" 576 #define D2 "D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN" 577 for (lcnt = print = 0; fgets(buf, sizeof(buf), fp);) { 578 if (!strncmp(buf, S1, sizeof(S1) - 1) || 579 !strncmp(buf, S2, sizeof(S2) - 1)) { 580 print = 1; 581 continue; 582 } else if (!strncmp(buf, D1, sizeof(D1) - 1) || 583 !strncmp(buf, D2, sizeof(D2) - 1)) 584 return; 585 if (!print) 586 continue; 587 if (*buf == '\n') 588 ++lcnt; 589 else { 590 for(; lcnt; --lcnt) 591 (void)putchar('\n'); 592 for (p = buf; isspace(*p); ++p); 593 (void)fputs(p, stdout); 594 } 595 } 596 (void)fclose(fp); 597 } 598 599 /* 600 * cat -- 601 * cat out the file 602 */ 603 static void 604 cat(fname) 605 char *fname; 606 { 607 int fd, n; 608 char buf[2048]; 609 610 if ((fd = open(fname, O_RDONLY, 0)) < 0) { 611 warn("%s", fname); 612 (void)cleanup(); 613 exit(1); 614 } 615 while ((n = read(fd, buf, sizeof(buf))) > 0) 616 if (write(STDOUT_FILENO, buf, n) != n) { 617 warn("write"); 618 (void)cleanup(); 619 exit (1); 620 } 621 if (n == -1) { 622 warn("read"); 623 (void)cleanup(); 624 exit(1); 625 } 626 (void)close(fd); 627 } 628 629 /* 630 * check_pager -- 631 * check the user supplied page information 632 */ 633 static char * 634 check_pager(name) 635 char *name; 636 { 637 char *p, *save; 638 639 /* 640 * if the user uses "more", we make it "more -s"; watch out for 641 * PAGER = "mypager /usr/ucb/more" 642 */ 643 for (p = name; *p && !isspace(*p); ++p); 644 for (; p > name && *p != '/'; --p); 645 if (p != name) 646 ++p; 647 648 /* make sure it's "more", not "morex" */ 649 if (!strncmp(p, "more", 4) && (!p[4] || isspace(p[4]))){ 650 save = name; 651 /* allocate space to add the "-s" */ 652 if (!(name = 653 malloc((u_int)(strlen(save) + sizeof("-s") + 1)))) 654 err(1, NULL); 655 (void)sprintf(name, "%s %s", save, "-s"); 656 } 657 return(name); 658 } 659 660 /* 661 * jump -- 662 * strip out flag argument and jump 663 */ 664 static void 665 jump(argv, flag, name) 666 char **argv, *flag, *name; 667 { 668 char **arg; 669 670 argv[0] = name; 671 for (arg = argv + 1; *arg; ++arg) 672 if (!strcmp(*arg, flag)) 673 break; 674 for (; *arg; ++arg) 675 arg[0] = arg[1]; 676 execvp(name, argv); 677 (void)fprintf(stderr, "%s: Command not found.\n", name); 678 exit(1); 679 } 680 681 /* 682 * onsig -- 683 * If signaled, delete the temporary files. 684 */ 685 static void 686 onsig(signo) 687 int signo; 688 { 689 (void)cleanup(); 690 691 (void)signal(signo, SIG_DFL); 692 (void)kill(getpid(), signo); 693 694 /* NOTREACHED */ 695 exit (1); 696 } 697 698 /* 699 * cleanup -- 700 * Clean up temporary files, show any error messages. 701 */ 702 static int 703 cleanup() 704 { 705 TAG *intmpp, *missp; 706 ENTRY *ep; 707 int rval; 708 709 rval = 0; 710 ep = (missp = getlist("_missing")) == NULL ? 711 NULL : missp->list.tqh_first; 712 if (ep != NULL) 713 for (; ep != NULL; ep = ep->q.tqe_next) { 714 warnx("no entry for %s in the manual.", ep->s); 715 rval = 1; 716 } 717 718 ep = (intmpp = getlist("_intmp")) == NULL ? 719 NULL : intmpp->list.tqh_first; 720 for (; ep != NULL; ep = ep->q.tqe_next) 721 (void)unlink(ep->s); 722 return (rval); 723 } 724 725 /* 726 * usage -- 727 * print usage message and die 728 */ 729 static void 730 usage() 731 { 732 (void)fprintf(stderr, 733 "usage: man [-achw] [-C file] [-M path] [-m path] [section] title ...\n"); 734 exit(1); 735 } 736