120:
32:
73:
418:
Another common advanced extension of getopt is resetting the state of argument parsing; this is useful as a replacement of the options-anyware GNU extension, or as a way to "layer" a set of command-line interface with different options at different levels. This is achieved in BSD systems using an
2641:
command for Unix SVR3 Bourne Shell instead. The advantage of building the command into the shell is that it now has access to the shell's variables, so values could be written safely without quoting. It uses the shell's own variables to track the position of current and argument positions,
2819:: has an implementation of getopt_long in its standard library, GetoptLong. Ruby also has modules in its standard library with a more sophisticated and convenient interface. A third party implementation of the original getopt interface is available.
634:
itself returns an integer that is either an option character or -1 for end-of-options. The idiom is to use a while-loop to go through options, and to use a switch-case statement to pick and act on options. See the example section of this article.
281:
so that there would be a common interface on which everyone could depend. As such, the original authors picked out of the variations support for single character options, multiple options specified together, and options with arguments
2694:
is a concise description of the common POSIX command argument structure, and it is replicated widely by programmers seeking to provide a similar interface, both to themselves and to the user on the command-line.
2675:
came out with an enhanced version that fixed all of old getopt's problems by escaping. It also supports GNU's long option names. On the other hand, long options have been implemented rarely in the
730:
and takes an extra option for defining the "short" names of long options and some extra controls. If a short name is not defined, getopt will put an index referring to the option structure in the
300:
at the 1985 UNIFORUM conference in Dallas, Texas, with the intent for it to be available in the public domain. Versions of it were subsequently picked up by other flavors of Unix (
2623:
Shell script programmers commonly want to provide a consistent way of providing options. To achieve this goal, they turn to getopts and seek to port it to their own language.
2771:: There is no implementation of getopt in the Java standard library. Several open source modules exist, including gnu.getopt.Getopt, which is ported from GNU getopt, and
387:, allows parsing of more readable, multicharacter options, which are introduced by two dashes instead of one. The choice of two dashes allows multicharacter options (
2850:
2952:
2923:
2665:
Portability
Guidelines Issue 4. Now a part of the POSIX Shell standard, getopts have spread far and wide in many other shells trying to be POSIX-compliant.
3115:
2634:(USL). This version was unable to deal with quoting and shell metacharacters, as it shows no attempts at quoting. It has been inherited to FreeBSD.
372:
implicitly permutes the argument vector so it still leaves the non-options in the end. Since POSIX already has the convention of returning -1 on
2813:
based on C's getopt and GNU extensions. Python's standard library also contains other modules to parse options that are more convenient to use.
2781:: has many different dialects with no common standard library. There are some third party implementations of getopt for some dialects of Lisp.
94:
81:
2711:(both accept GNU-style), as well as some more minimal libraries, can be used to provide the functionality. Alternative interfaces also exist:
2894:
177:
159:
59:
2637:
In 1986, USL decided that being unsafe around metacharacters and whitespace was no longer acceptable, and they created the builtin
349:
is a system dependent function, and its behavior depends on the implementation in the C library. Some custom implementations like
2947:(The Open Group Base Specifications Issue 7, 2018 edition; IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008) ed.).
2918:(The Open Group Base Specifications Issue 7, 2018 edition; IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008) ed.).
356:
The conventional (POSIX and BSD) handling is that the options end when the first non-option argument is encountered, and that
3505:
2762:
2806:
2842:
2944:
2816:
2778:
2768:
2915:
2871:
696:
A pointer to the argument of the current option, if present. Can be used to control where to start parsing (again).
197:
141:
399:. This interface proved popular, and has been taken up (sans the permutation) by many BSD distributions including
2744:
2658:
440:
The command-line syntaxes for getopt-based programs is the POSIX-recommended
Utility Argument Syntax. In short:
3500:
2631:
194:
3122:
130:
86:
45:
3071:
227:
was how to specify options; early programs used many ways of doing so, including single character options (
3192:
3089:
2791:: has its own implementation as one of its standard units named GetOpts. It is supported on all platforms.
2738:
2723:
224:
3308:
3475:
2825:: does not have getopt functionality in its standard library. Third-party implementations are available.
278:
204:
461:
When an option takes an argument, this can be in the same token or in the next one. In other words, if
3294:
3031:
324:
2974:
215:
systems. It is also the name of a Unix program for parsing command line arguments in shell scripts.
3005:
2719:
476:
Multiple options can be chained together, as long as the non-last ones are not argument taking. If
3053:
2765:: comes with System.Console.GetOpt, which is essentially a Haskell port of the GNU getopt library.
3480:
3170:
2886:
2797:: has two separate derivatives of getopt in its standard library: Getopt::Long and Getopt::Std.
2865:
2810:
2846:
3266:
2948:
2919:
2822:
2772:
404:
2733:
family of functions in glibc and gnulib provides some more convenience and modularity.
600:
function prototype; i.e., argc indicates the length of the argv array-of-strings. The
3494:
3397:"16.5. getopt — C-style parser for command line options — Python 3.6.0 documentation"
3485:
3433:
3486:
Full getopt port for
Unicode and Multibyte Microsoft Visual C, C++, or MFC projects
3382:
395:). The GNU extension also allows an alternative format for options with arguments:
338:. It parses a string of comma-separated sub-options. It appeared in 4.4BSD (1995).
3410:
604:
contains a specification of what options to look for (normal alphanumerals except
3328:
2788:
2782:
727:
376:
and skipping it, one can always portably use it as an end-of-options signifier.
316:
51:
3234:
3396:
2849:, released June 1980, linked here from Warren Toomey's The Unix Tree project.
2672:
274:
200:
2755:
package supports processing closer to the C function. There is also another
3453:
507:
All options precede non-option arguments (except for in the GNU extension).
408:
277:
was written to be a standard mechanism that all programs could use to parse
212:
3354:
718:
If an unrecognized option occurs, the value of that unrecognized character.
72:
3368:
3221:
3180:
3157:
3041:
2984:
391:) to be differentiated from single character options specified together (
313:
712:
A boolean switch controlling whether getopt should print error messages.
3176:
3037:
2980:
2638:
2618:
400:
297:
20:
3458:
3280:
2704:
2662:
350:
301:
407:. An alternative way to support long options is seen in Solaris and
3147:
2759:
package providing interface much closer to the original POSIX one.
638:
To communicate extra information back to the program, a few global
3217:
3153:
2708:
2680:
642:
variables are referenced by the program to fetch information from
361:
309:
305:
208:
2794:
3252:
608:), and what options to accept arguments (colons). For example,
3211:
2800:
527:
The getopt manual from GNU specifies such a usage for getopt:
515:
Extensions on the syntax include the GNU convention and Sun's
454:
In order to specify that an option takes an argument, include
380:
113:
66:
25:
3434:"Parser for command-line options, arguments and sub-commands"
3235:"visual studio - getopt.h: Compiling Linux C-Code in Windows"
451:
Options can take an argument, mandatory or optional, or none.
3114:
David-John, Burrowes; Kowalski III, Joseph E. (2003-01-22).
1587:/* for getopt_long; POSIX standard getopt is in unistd.h */
726:
interface is similar, although it belongs to a different
458:
after the option name (only during initial specification)
444:
Options are single-character alphanumerics preceded by a
516:
296:
dates back to at least 1980 and was first published by
137:
1725:/* NAME ARGUMENT FLAG SHORTNAME */
129:
may contain excessive or inappropriate references to
2756:
2752:
2748:
2730:
2715:
2700:
2676:
2650:, and returns the option name in a shell variable.
2475:"?? getopt returned character code 0%o ??
1416:"?? getopt returned character code 0%o ??
643:
639:
373:
335:
331:
16:
C library function for parsing command-line options
2891:linux.co.cr (originally in mod.std.unix newsgroup)
2199:"digits occur in two different argv-elements.
1140:"digits occur in two different argv-elements.
3116:"CLIP Specification, Version 1.0, PSARC 1999/645"
3335:. Apache Software Foundation. February 27, 2013
2741:: has getopt module in the D standard library.
2626:The first attempt at porting was the program
207:of the Unix/POSIX style. It is a part of the
8:
2785:has a prominent third party implementation.
2751:package, which allows long flag names. The
596:are defined exactly like they are in the C
60:Learn how and when to remove these messages
612:refers to three options: an argumentless
290:), all controllable by an option string.
178:Learn how and when to remove this message
160:Learn how and when to remove this message
3141:
3139:
3137:
3135:
3000:
2998:
2996:
2994:
2992:
2722:, has the additional advantage of being
702:Where getopt is currently looking at in
423:variable, and on GNU systems by setting
364:extension, however, options are allowed
231:), multiple options specified together (
97:of all important aspects of the article.
3058:Oracle Solaris 11.2 Information Library
2834:
360:would return -1 to signal that. In the
330:A POSIX-standard companion function to
2887:"public domain AT&T getopt source"
2863:
2526:"non-option ARGV-elements: "
2412:"option d with value '%s'
2361:"option c with value '%s'
1467:"non-option ARGV-elements: "
1353:"option d with value '%s'
1302:"option c with value '%s'
93:Please consider expanding the lead to
2843:"usr/src/lib/libc/pdp11/gen/getopt.c"
140:by removing references to unreliable
7:
628:extension for long option synonyms.
255:), and different prefix characters (
144:where they are used inappropriately.
211:specification, and is universal to
14:
3411:"Parser for command line options"
3355:"Getopt::Long - perldoc.perl.org"
2699:C: non-POSIX systems do not ship
41:This article has multiple issues.
3369:"Getopt::Std - perldoc.perl.org"
511:always marks the end of options.
308:, etc.). It is specified in the
118:
71:
30:
2955:from the original on 2023-12-02
2926:from the original on 2024-03-24
2897:from the original on 2023-05-12
2885:Quarterman, John (1985-11-03).
2853:from the original on 2023-05-12
327:to parse command-line options.
85:may be too short to adequately
49:or discuss these issues on the
2671:was basically forgotten until
415:), but it was not as popular.
95:provide an accessible overview
1:
3422:Deprecated since version 2.7
488:takes an optional argument,
3197:The Open Group (POSIX 2018)
2809:: contains a module in its
620:, and a mandatory-argument
323:have been created for many
243:), options with arguments (
239:), multicharacter options (
223:A long-standing issue with
3522:
2616:
504:due to the preceding rule.
18:
3309:"Class gnu.getopt.Getopt"
2795:Perl programming language
2679:command in other shells,
2659:Single UNIX Specification
448:(hyphen-minus) character.
2803:: has a getopt function.
2632:Unix System Laboratories
2094:" with arg %s"
1560:
837:
736:
648:
624:. GNU here implements a
529:
484:take no arguments while
353:are available, however.
312:standard as part of the
19:Not to be confused with
3295:"System.Console.GetOpt"
616:, an optional-argument
3383:"PHP: getopt - Manual"
2870:: CS1 maint: others (
2739:D programming language
2703:in the C library, but
131:self-published sources
3506:Command-line software
3072:"Utility Conventions"
2055:"option %s"
1965:"abc:d:012"
1014:"abc:d:012"
831:Using POSIX standard
325:programming languages
225:command line programs
2683:being an exception.
2657:was included in the
1554:Using GNU extension
279:command-line options
205:command-line options
3476:POSIX specification
2720:RPM package manager
1812:"verbose"
500:is not the same as
465:takes an argument,
3156:Library Functions
3040:Library Functions
2983:Library Functions
2687:In other languages
2220:this_option_optind
2184:this_option_optind
2001:this_option_optind
1839:"create"
1785:"delete"
1758:"append"
1161:this_option_optind
1125:this_option_optind
1035:this_option_optind
722:The GNU extension
3481:GNU getopt manual
3454:"GNU Getopt .NET"
3179:General Commands
3094:The GNU C Library
3090:"Argument Syntax"
2747:: comes with the
2718:library, used by
2630:, implemented by
1872:required_argument
1845:required_argument
1791:required_argument
1737:required_argument
734:pointer instead.
368:for ease of use;
319:. Derivatives of
235:is equivalent to
188:
187:
180:
170:
169:
162:
112:
111:
64:
3513:
3464:
3463:
3450:
3444:
3443:
3441:
3440:
3430:
3424:
3420:
3418:
3417:
3407:
3401:
3400:
3393:
3387:
3386:
3379:
3373:
3372:
3365:
3359:
3358:
3351:
3345:
3344:
3342:
3340:
3325:
3319:
3318:
3316:
3315:
3305:
3299:
3298:
3291:
3285:
3284:
3281:"Package getopt"
3277:
3271:
3270:
3267:"Package getopt"
3263:
3257:
3256:
3249:
3243:
3242:
3231:
3225:
3215:
3214:
3207:
3201:
3200:
3189:
3183:
3174:
3173:
3166:
3160:
3151:
3150:
3143:
3130:
3129:
3127:
3121:. Archived from
3120:
3111:
3105:
3104:
3102:
3100:
3086:
3080:
3079:
3068:
3062:
3061:
3050:
3044:
3035:
3034:
3027:
3021:
3020:
3018:
3016:
3002:
2987:
2978:
2977:
2970:
2964:
2963:
2961:
2960:
2941:
2935:
2934:
2932:
2931:
2912:
2906:
2905:
2903:
2902:
2882:
2876:
2875:
2869:
2861:
2859:
2858:
2839:
2811:standard library
2758:
2754:
2750:
2732:
2717:
2702:
2678:
2656:
2649:
2645:
2608:
2605:
2602:
2599:
2596:
2593:
2590:
2587:
2584:
2581:
2578:
2575:
2572:
2569:
2566:
2563:
2560:
2557:
2554:
2551:
2548:
2545:
2542:
2539:
2536:
2533:
2530:
2527:
2524:
2521:
2518:
2515:
2512:
2509:
2506:
2503:
2500:
2497:
2494:
2491:
2488:
2485:
2482:
2479:
2476:
2473:
2470:
2467:
2464:
2461:
2458:
2455:
2452:
2449:
2446:
2443:
2440:
2437:
2434:
2431:
2428:
2425:
2422:
2419:
2416:
2413:
2410:
2407:
2404:
2401:
2398:
2395:
2392:
2389:
2386:
2383:
2380:
2377:
2374:
2371:
2368:
2365:
2362:
2359:
2356:
2353:
2350:
2347:
2344:
2341:
2338:
2335:
2332:
2329:
2326:
2323:
2320:
2317:
2314:
2311:
2308:
2305:
2302:
2299:
2296:
2293:
2290:
2287:
2284:
2281:
2278:
2275:
2272:
2269:
2266:
2263:
2260:
2257:
2254:
2251:
2248:
2245:
2242:
2239:
2236:
2233:
2230:
2227:
2224:
2221:
2218:
2215:
2212:
2209:
2206:
2203:
2200:
2197:
2194:
2191:
2188:
2185:
2182:
2179:
2176:
2173:
2170:
2167:
2164:
2161:
2158:
2155:
2152:
2149:
2146:
2143:
2140:
2137:
2134:
2131:
2128:
2125:
2122:
2119:
2116:
2113:
2110:
2107:
2104:
2101:
2098:
2095:
2092:
2089:
2086:
2083:
2080:
2077:
2074:
2071:
2068:
2065:
2062:
2059:
2056:
2053:
2050:
2047:
2044:
2041:
2038:
2035:
2032:
2029:
2026:
2023:
2020:
2017:
2014:
2011:
2008:
2005:
2002:
1999:
1996:
1993:
1990:
1987:
1984:
1981:
1978:
1975:
1972:
1969:
1966:
1963:
1960:
1957:
1954:
1951:
1948:
1945:
1942:
1939:
1936:
1933:
1930:
1927:
1924:
1921:
1918:
1915:
1912:
1909:
1906:
1903:
1900:
1897:
1894:
1891:
1888:
1885:
1882:
1879:
1876:
1873:
1870:
1867:
1866:"file"
1864:
1861:
1858:
1855:
1852:
1849:
1846:
1843:
1840:
1837:
1834:
1831:
1828:
1825:
1822:
1819:
1816:
1813:
1810:
1807:
1804:
1801:
1798:
1795:
1792:
1789:
1786:
1783:
1780:
1777:
1774:
1771:
1768:
1765:
1762:
1759:
1756:
1753:
1750:
1747:
1744:
1741:
1738:
1735:
1732:
1729:
1726:
1723:
1720:
1717:
1714:
1711:
1708:
1705:
1702:
1699:
1696:
1693:
1690:
1687:
1684:
1681:
1678:
1675:
1672:
1669:
1666:
1663:
1660:
1657:
1654:
1651:
1648:
1645:
1642:
1639:
1636:
1633:
1630:
1627:
1624:
1621:
1618:
1615:
1612:
1609:
1606:
1603:
1600:
1597:
1594:
1591:
1588:
1585:
1584:<getopt.h>
1582:
1579:
1576:
1575:<stdlib.h>
1573:
1570:
1569:/* for printf */
1567:
1564:
1549:
1546:
1543:
1540:
1537:
1534:
1531:
1528:
1525:
1522:
1519:
1516:
1513:
1510:
1507:
1504:
1501:
1498:
1495:
1492:
1489:
1486:
1483:
1480:
1477:
1474:
1471:
1468:
1465:
1462:
1459:
1456:
1453:
1450:
1447:
1444:
1441:
1438:
1435:
1432:
1429:
1426:
1423:
1420:
1417:
1414:
1411:
1408:
1405:
1402:
1399:
1396:
1393:
1390:
1387:
1384:
1381:
1378:
1375:
1372:
1369:
1366:
1363:
1360:
1357:
1354:
1351:
1348:
1345:
1342:
1339:
1336:
1333:
1330:
1327:
1324:
1321:
1318:
1315:
1312:
1309:
1306:
1303:
1300:
1297:
1294:
1291:
1288:
1285:
1282:
1279:
1276:
1273:
1270:
1267:
1264:
1261:
1258:
1255:
1252:
1249:
1246:
1243:
1240:
1237:
1234:
1231:
1228:
1225:
1222:
1219:
1216:
1213:
1210:
1207:
1204:
1201:
1198:
1195:
1192:
1189:
1186:
1183:
1180:
1177:
1174:
1171:
1168:
1165:
1162:
1159:
1156:
1153:
1150:
1147:
1144:
1141:
1138:
1135:
1132:
1129:
1126:
1123:
1120:
1117:
1114:
1111:
1108:
1105:
1102:
1099:
1096:
1093:
1090:
1087:
1084:
1081:
1078:
1075:
1072:
1069:
1066:
1063:
1060:
1057:
1054:
1051:
1048:
1045:
1042:
1039:
1036:
1033:
1030:
1027:
1024:
1021:
1018:
1015:
1012:
1009:
1006:
1003:
1000:
997:
994:
991:
988:
985:
982:
979:
976:
973:
970:
967:
964:
961:
958:
955:
952:
949:
946:
943:
940:
937:
934:
931:
928:
925:
922:
919:
916:
913:
910:
907:
904:
901:
898:
895:
892:
889:
886:
883:
880:
877:
874:
871:
868:
865:
864:/* for getopt */
862:
861:<unistd.h>
859:
856:
853:
852:<stdlib.h>
850:
847:
846:/* for printf */
844:
841:
821:
818:
815:
812:
809:
806:
803:
800:
797:
794:
791:
788:
785:
782:
779:
776:
773:
770:
767:
764:
761:
758:
755:
752:
749:
746:
743:
742:<getopt.h>
740:
733:
725:
705:
688:
685:
682:
679:
676:
673:
670:
667:
664:
661:
658:
655:
652:
645:
641:
633:
627:
623:
619:
615:
611:
607:
603:
599:
595:
591:
584:
581:
578:
575:
572:
569:
566:
563:
560:
557:
554:
551:
548:
545:
542:
539:
536:
535:<unistd.h>
533:
518:
510:
503:
499:
495:
491:
487:
483:
479:
472:
468:
464:
457:
447:
426:
422:
398:
394:
390:
375:
371:
359:
348:
337:
333:
322:
295:
289:
285:
273:
266:
262:
258:
254:
250:
246:
242:
238:
234:
230:
183:
176:
165:
158:
154:
151:
145:
122:
121:
114:
107:
104:
98:
75:
67:
56:
34:
33:
26:
3521:
3520:
3516:
3515:
3514:
3512:
3511:
3510:
3501:C POSIX library
3491:
3490:
3472:
3467:
3452:
3451:
3447:
3438:
3436:
3432:
3431:
3427:
3415:
3413:
3409:
3408:
3404:
3395:
3394:
3390:
3381:
3380:
3376:
3367:
3366:
3362:
3353:
3352:
3348:
3338:
3336:
3327:
3326:
3322:
3313:
3311:
3307:
3306:
3302:
3293:
3292:
3288:
3279:
3278:
3274:
3265:
3264:
3260:
3251:
3250:
3246:
3233:
3232:
3228:
3224:– User Commands
3210:
3209:
3208:
3204:
3191:
3190:
3186:
3169:
3168:
3167:
3163:
3146:
3145:
3144:
3133:
3125:
3118:
3113:
3112:
3108:
3098:
3096:
3088:
3087:
3083:
3070:
3069:
3065:
3052:
3051:
3047:
3030:
3029:
3028:
3024:
3014:
3012:
3004:
3003:
2990:
2973:
2972:
2971:
2967:
2958:
2956:
2943:
2942:
2938:
2929:
2927:
2914:
2913:
2909:
2900:
2898:
2884:
2883:
2879:
2862:
2856:
2854:
2841:
2840:
2836:
2832:
2689:
2654:
2647:
2643:
2621:
2615:
2610:
2609:
2606:
2603:
2600:
2597:
2594:
2591:
2588:
2585:
2582:
2579:
2576:
2573:
2570:
2567:
2564:
2561:
2559:"%s "
2558:
2555:
2552:
2549:
2546:
2543:
2540:
2537:
2534:
2531:
2528:
2525:
2522:
2519:
2516:
2513:
2510:
2507:
2504:
2501:
2498:
2495:
2492:
2489:
2486:
2483:
2480:
2477:
2474:
2471:
2468:
2465:
2462:
2459:
2456:
2453:
2450:
2447:
2444:
2441:
2438:
2435:
2432:
2429:
2426:
2423:
2420:
2417:
2414:
2411:
2408:
2405:
2402:
2399:
2396:
2393:
2390:
2387:
2384:
2381:
2378:
2375:
2372:
2369:
2366:
2363:
2360:
2357:
2354:
2351:
2348:
2345:
2342:
2339:
2336:
2333:
2330:
2327:
2324:
2321:
2318:
2315:
2312:
2309:
2306:
2303:
2300:
2297:
2294:
2291:
2288:
2285:
2282:
2279:
2276:
2273:
2270:
2267:
2264:
2261:
2258:
2255:
2252:
2249:
2246:
2243:
2240:
2237:
2234:
2232:"option %c
2231:
2228:
2225:
2222:
2219:
2216:
2213:
2210:
2207:
2204:
2201:
2198:
2195:
2192:
2189:
2186:
2183:
2180:
2177:
2174:
2171:
2168:
2165:
2162:
2159:
2156:
2153:
2150:
2147:
2144:
2141:
2138:
2135:
2132:
2129:
2126:
2123:
2120:
2117:
2114:
2111:
2108:
2105:
2102:
2099:
2096:
2093:
2090:
2087:
2084:
2081:
2078:
2075:
2072:
2069:
2066:
2063:
2060:
2057:
2054:
2051:
2048:
2045:
2042:
2039:
2036:
2033:
2030:
2027:
2024:
2021:
2018:
2015:
2012:
2009:
2006:
2003:
2000:
1997:
1994:
1991:
1988:
1985:
1982:
1979:
1976:
1973:
1970:
1967:
1964:
1961:
1958:
1955:
1952:
1949:
1946:
1943:
1940:
1937:
1934:
1931:
1928:
1925:
1922:
1919:
1916:
1913:
1910:
1907:
1904:
1901:
1898:
1895:
1892:
1889:
1886:
1883:
1880:
1877:
1874:
1871:
1868:
1865:
1862:
1859:
1856:
1853:
1850:
1847:
1844:
1841:
1838:
1835:
1832:
1829:
1826:
1823:
1820:
1817:
1814:
1811:
1808:
1805:
1802:
1799:
1796:
1793:
1790:
1787:
1784:
1781:
1778:
1775:
1772:
1769:
1766:
1763:
1760:
1757:
1754:
1751:
1748:
1745:
1742:
1739:
1736:
1733:
1731:"add"
1730:
1727:
1724:
1721:
1718:
1715:
1712:
1709:
1706:
1703:
1700:
1697:
1694:
1691:
1688:
1685:
1682:
1679:
1676:
1673:
1670:
1667:
1664:
1661:
1658:
1655:
1652:
1649:
1646:
1643:
1640:
1637:
1634:
1631:
1628:
1625:
1622:
1619:
1616:
1613:
1610:
1607:
1604:
1601:
1598:
1595:
1592:
1589:
1586:
1583:
1580:
1577:
1574:
1571:
1568:
1566:<stdio.h>
1565:
1562:
1559:
1551:
1550:
1547:
1544:
1541:
1538:
1535:
1532:
1529:
1526:
1523:
1520:
1517:
1514:
1511:
1508:
1505:
1502:
1500:"%s "
1499:
1496:
1493:
1490:
1487:
1484:
1481:
1478:
1475:
1472:
1469:
1466:
1463:
1460:
1457:
1454:
1451:
1448:
1445:
1442:
1439:
1436:
1433:
1430:
1427:
1424:
1421:
1418:
1415:
1412:
1409:
1406:
1403:
1400:
1397:
1394:
1391:
1388:
1385:
1382:
1379:
1376:
1373:
1370:
1367:
1364:
1361:
1358:
1355:
1352:
1349:
1346:
1343:
1340:
1337:
1334:
1331:
1328:
1325:
1322:
1319:
1316:
1313:
1310:
1307:
1304:
1301:
1298:
1295:
1292:
1289:
1286:
1283:
1280:
1277:
1274:
1271:
1268:
1265:
1262:
1259:
1256:
1253:
1250:
1247:
1244:
1241:
1238:
1235:
1232:
1229:
1226:
1223:
1220:
1217:
1214:
1211:
1208:
1205:
1202:
1199:
1196:
1193:
1190:
1187:
1184:
1181:
1178:
1175:
1173:"option %c
1172:
1169:
1166:
1163:
1160:
1157:
1154:
1151:
1148:
1145:
1142:
1139:
1136:
1133:
1130:
1127:
1124:
1121:
1118:
1115:
1112:
1109:
1106:
1103:
1100:
1097:
1094:
1091:
1088:
1085:
1082:
1079:
1076:
1073:
1070:
1067:
1064:
1061:
1058:
1055:
1052:
1049:
1046:
1043:
1040:
1037:
1034:
1031:
1028:
1025:
1022:
1019:
1016:
1013:
1010:
1007:
1004:
1001:
998:
995:
992:
989:
986:
983:
980:
977:
974:
971:
968:
965:
962:
959:
956:
953:
950:
947:
944:
941:
938:
935:
932:
929:
926:
923:
920:
917:
914:
911:
908:
905:
902:
899:
896:
893:
890:
887:
884:
881:
878:
875:
872:
869:
866:
863:
860:
857:
854:
851:
848:
845:
843:<stdio.h>
842:
839:
836:
828:
823:
822:
819:
816:
813:
810:
807:
804:
801:
798:
795:
792:
789:
786:
783:
780:
777:
774:
771:
768:
765:
762:
759:
756:
753:
750:
747:
744:
741:
738:
731:
723:
703:
690:
689:
686:
683:
680:
677:
674:
671:
668:
665:
662:
659:
656:
653:
650:
631:
625:
621:
617:
613:
609:
605:
601:
597:
593:
589:
586:
585:
582:
579:
576:
573:
570:
567:
564:
561:
558:
555:
552:
549:
546:
543:
540:
537:
534:
531:
525:
523:For programmers
519:specification.
508:
501:
497:
493:
492:is the same as
489:
485:
481:
477:
470:
469:is the same as
466:
462:
455:
445:
438:
433:
424:
420:
396:
392:
388:
369:
357:
346:
344:
320:
293:
287:
283:
271:
264:
260:
256:
252:
248:
244:
240:
236:
232:
228:
221:
184:
173:
172:
171:
166:
155:
149:
146:
135:
123:
119:
108:
102:
99:
92:
80:This article's
76:
35:
31:
24:
17:
12:
11:
5:
3519:
3517:
3509:
3508:
3503:
3493:
3492:
3489:
3488:
3483:
3478:
3471:
3470:External links
3468:
3466:
3465:
3445:
3425:
3402:
3388:
3374:
3360:
3346:
3333:Apache Commons
3320:
3300:
3286:
3272:
3258:
3253:"Package flag"
3244:
3239:Stack Overflow
3226:
3202:
3184:
3161:
3131:
3128:on 2020-06-27.
3106:
3081:
3063:
3045:
3032:getopt_long(3)
3022:
2988:
2965:
2949:The Open Group
2936:
2920:The Open Group
2907:
2877:
2833:
2831:
2828:
2827:
2826:
2823:.NET Framework
2820:
2814:
2804:
2798:
2792:
2786:
2776:
2773:Apache Commons
2766:
2760:
2742:
2736:
2735:
2734:
2727:
2688:
2685:
2617:Main article:
2614:
2611:
2316:"option b
2271:"option a
1578:/* for exit */
1561:
1558:
1552:
1257:"option b
1212:"option a
855:/* for exit */
838:
835:
829:
827:
824:
737:
720:
719:
716:
713:
710:
707:
700:
697:
694:
649:
530:
524:
521:
513:
512:
505:
474:
459:
452:
449:
437:
434:
432:
429:
343:
340:
220:
217:
203:used to parse
186:
185:
168:
167:
126:
124:
117:
110:
109:
89:the key points
79:
77:
70:
65:
39:
38:
36:
29:
15:
13:
10:
9:
6:
4:
3:
2:
3518:
3507:
3504:
3502:
3499:
3498:
3496:
3487:
3484:
3482:
3479:
3477:
3474:
3473:
3469:
3461:
3460:
3455:
3449:
3446:
3435:
3429:
3426:
3423:
3412:
3406:
3403:
3398:
3392:
3389:
3384:
3378:
3375:
3370:
3364:
3361:
3356:
3350:
3347:
3334:
3330:
3329:"Commons CLI"
3324:
3321:
3310:
3304:
3301:
3296:
3290:
3287:
3282:
3276:
3273:
3268:
3262:
3259:
3254:
3248:
3245:
3240:
3236:
3230:
3227:
3223:
3219:
3216: –
3213:
3206:
3203:
3198:
3194:
3188:
3185:
3182:
3178:
3175: –
3172:
3165:
3162:
3159:
3155:
3152: –
3149:
3142:
3140:
3138:
3136:
3132:
3124:
3117:
3110:
3107:
3095:
3091:
3085:
3082:
3077:
3073:
3067:
3064:
3059:
3055:
3049:
3046:
3043:
3039:
3036: –
3033:
3026:
3023:
3011:
3007:
3001:
2999:
2997:
2995:
2993:
2989:
2986:
2982:
2979: –
2976:
2969:
2966:
2954:
2950:
2946:
2940:
2937:
2925:
2921:
2917:
2911:
2908:
2896:
2892:
2888:
2881:
2878:
2873:
2867:
2852:
2848:
2844:
2838:
2835:
2829:
2824:
2821:
2818:
2815:
2812:
2808:
2805:
2802:
2799:
2796:
2793:
2790:
2787:
2784:
2780:
2777:
2774:
2770:
2767:
2764:
2761:
2746:
2743:
2740:
2737:
2728:
2725:
2721:
2713:
2712:
2710:
2706:
2698:
2697:
2696:
2693:
2686:
2684:
2682:
2674:
2670:
2666:
2664:
2660:
2651:
2640:
2635:
2633:
2629:
2624:
2620:
2612:
1557:
1553:
834:
830:
825:
735:
729:
717:
714:
711:
708:
701:
698:
695:
692:
691:
647:
636:
629:
528:
522:
520:
506:
475:
460:
453:
450:
443:
442:
441:
435:
430:
428:
416:
414:
410:
406:
402:
386:
382:
377:
367:
363:
354:
352:
341:
339:
328:
326:
318:
315:
311:
307:
303:
299:
291:
280:
276:
268:
226:
218:
216:
214:
210:
206:
202:
199:
196:
192:
182:
179:
164:
161:
153:
143:
139:
133:
132:
127:This article
125:
116:
115:
106:
96:
90:
88:
83:
78:
74:
69:
68:
63:
61:
54:
53:
48:
47:
42:
37:
28:
27:
22:
3457:
3448:
3437:. Retrieved
3428:
3421:
3414:. Retrieved
3405:
3391:
3377:
3363:
3349:
3337:. Retrieved
3332:
3323:
3312:. Retrieved
3303:
3289:
3275:
3261:
3247:
3238:
3229:
3205:
3196:
3187:
3164:
3123:the original
3109:
3097:. Retrieved
3093:
3084:
3076:POSIX.1-2018
3075:
3066:
3057:
3048:
3025:
3013:. Retrieved
3009:
2975:getsubopt(3)
2968:
2957:. Retrieved
2939:
2928:. Retrieved
2910:
2899:. Retrieved
2890:
2880:
2855:. Retrieved
2837:
2691:
2690:
2668:
2667:
2661:version 1 /
2652:
2636:
2627:
2625:
2622:
2214:digit_optind
2178:digit_optind
2166:digit_optind
2061:long_options
1980:option_index
1971:long_options
1923:option_index
1716:long_options
1635:digit_optind
1555:
1155:digit_optind
1119:digit_optind
1107:digit_optind
912:digit_optind
832:
721:
637:
630:
587:
526:
514:
439:
417:
412:
384:
378:
365:
355:
345:
329:
292:
269:
222:
190:
189:
174:
156:
147:
136:Please help
128:
100:
84:
82:lead section
57:
50:
44:
43:Please help
40:
3054:"getopt(3)"
2945:"getsubopt"
2789:Free Pascal
2783:Common Lisp
2451:'?'
2400:'d'
2349:'c'
2304:'b'
2259:'a'
2154:'2'
2145:'1'
2136:'0'
1947:getopt_long
1857:'c'
1818:no_argument
1764:no_argument
1556:getopt_long
1392:'?'
1341:'d'
1290:'c'
1245:'b'
1200:'a'
1095:'2'
1086:'1'
1077:'0'
748:getopt_long
728:header file
724:getopt_long
411:(extending
403:as well as
385:getopt_long
383:extension,
317:header file
3495:Categories
3439:2013-04-30
3416:2013-04-30
3314:2013-06-24
3099:24 January
3015:23 January
3010:GNU Gnulib
2959:2024-04-22
2930:2024-04-22
2901:2024-04-22
2857:2024-04-22
2847:System III
2830:References
2673:util-linux
2175:&&
1116:&&
409:Korn Shell
397:--name=arg
342:Extensions
150:March 2012
138:improve it
103:March 2012
46:improve it
3212:getopt(1)
3193:"getopts"
3171:getopt(1)
3148:getopt(3)
2724:reentrant
2653:In 1995,
817:longindex
787:optstring
732:longindex
602:optstring
588:Here the
580:optstring
436:For users
413:optstring
336:getsubopt
213:Unix-like
87:summarize
52:talk page
3339:June 24,
3006:"getopt"
2953:Archived
2951:. 2018.
2924:Archived
2922:. 2018.
2916:"getopt"
2895:Archived
2866:cite web
2851:Archived
2613:In Shell
1581:#include
1572:#include
1563:#include
858:#include
849:#include
840:#include
826:Examples
805:longopts
739:#include
610:"vf::o:"
532:#include
494:-a -b -e
421:optreset
366:anywhere
314:unistd.h
298:AT&T
275:function
237:-a -b -c
201:function
3177:FreeBSD
3038:FreeBSD
2981:FreeBSD
2845:. From
2763:Haskell
2677:getopts
2655:getopts
2639:getopts
2619:getopts
2463:default
1404:default
502:-b -e a
405:Solaris
401:FreeBSD
310:POSIX.2
249:-inum 3
219:History
198:library
142:sources
21:getopts
3459:GitHub
3222:Manual
3181:Manual
3158:Manual
3042:Manual
2985:Manual
2807:Python
2757:getopt
2753:getopt
2705:gnulib
2701:getopt
2692:getopt
2669:getopt
2663:X/Open
2648:OPTARG
2644:OPTIND
2628:getopt
2586:"
2580:"
2574:printf
2553:printf
2538:optind
2520:printf
2505:optind
2481:"
2469:printf
2436:optarg
2424:optarg
2418:"
2406:printf
2385:optarg
2373:optarg
2367:"
2355:printf
2322:"
2310:printf
2277:"
2265:printf
2238:"
2226:printf
2205:"
2193:printf
2121:"
2115:"
2109:printf
2100:optarg
2088:printf
2079:optarg
2049:printf
2025:switch
2013:optind
2007:optind
1713:option
1710:struct
1707:static
1527:"
1521:"
1515:printf
1494:printf
1479:optind
1461:printf
1446:optind
1422:"
1410:printf
1377:optarg
1365:optarg
1359:"
1347:printf
1326:optarg
1314:optarg
1308:"
1296:printf
1263:"
1251:printf
1218:"
1206:printf
1179:"
1167:printf
1146:"
1134:printf
1059:switch
1047:optind
1041:optind
996:getopt
833:getopt
799:option
796:struct
715:optopt
709:opterr
699:optind
693:optarg
684:optopt
678:opterr
672:optind
666:extern
660:optarg
651:extern
644:getopt
640:extern
632:getopt
541:getopt
496:, but
471:-o foo
427:to 0.
425:optind
389:--inum
370:getopt
358:getopt
351:gnulib
347:getopt
332:getopt
321:getopt
302:4.3BSD
294:getopt
284:-a arg
272:getopt
253:-a=arg
245:-a arg
191:Getopt
3220:User
3218:Linux
3154:Linux
3126:(PDF)
3119:(PDF)
2709:MinGW
2681:ksh93
2532:while
2457:break
2442:break
2391:break
2340:break
2295:break
2250:break
2127:break
1977:&
1935:while
1473:while
1398:break
1383:break
1332:break
1281:break
1236:break
1191:break
984:while
793:const
778:const
769:const
571:const
562:const
467:-ofoo
431:Usage
362:glibc
306:Linux
288:-aarg
241:-inum
209:POSIX
193:is a
3341:2013
3101:2020
3017:2020
2872:link
2817:Ruby
2779:Lisp
2775:CLI.
2769:Java
2749:flag
2731:argp
2729:The
2716:popt
2714:The
2707:and
2646:and
2595:exit
2565:argv
2544:argc
2541:<
2511:argc
2508:<
2448:case
2430:dopt
2397:case
2379:copt
2346:case
2328:bopt
2301:case
2283:aopt
2256:case
2151:case
2142:case
2133:case
2067:name
2040:case
1959:argv
1953:argc
1905:NULL
1893:NULL
1878:NULL
1851:NULL
1824:NULL
1797:NULL
1770:NULL
1743:NULL
1695:dopt
1680:copt
1674:char
1662:bopt
1650:aopt
1614:argv
1608:char
1602:argc
1593:main
1536:exit
1506:argv
1485:argc
1482:<
1452:argc
1449:<
1389:case
1371:dopt
1338:case
1320:copt
1287:case
1269:bopt
1242:case
1224:aopt
1197:case
1092:case
1083:case
1074:case
1008:argv
1002:argc
972:dopt
957:copt
951:char
939:bopt
927:aopt
891:argv
885:char
879:argc
870:main
781:char
772:argv
763:char
757:argc
704:argv
654:char
598:main
594:argv
592:and
590:argc
574:char
565:argv
556:char
550:argc
517:CLIP
498:-bea
490:-abe
480:and
393:-abc
270:The
233:-abc
2801:PHP
1998:int
1920:int
1647:int
1632:int
1623:int
1599:int
1590:int
1032:int
924:int
909:int
900:int
876:int
867:int
811:int
754:int
745:int
669:int
547:int
538:int
381:GNU
334:is
286:or
267:).
3497::
3456:.
3331:.
3237:.
3195:.
3134:^
3092:.
3074:.
3056:.
3008:.
2991:^
2893:.
2889:.
2868:}}
2864:{{
2745:Go
2604:);
2589:);
2583:\n
2568:);
2529:);
2499:if
2490:);
2478:\n
2427:);
2415:\n
2376:);
2364:\n
2325:);
2319:\n
2280:);
2274:\n
2247:);
2235:\n
2208:);
2202:\n
2181:!=
2169:!=
2160:if
2124:);
2118:\n
2103:);
2073:if
2070:);
1989:-1
1986:!=
1983:))
1938:((
1917:};
1887:},
1860:},
1833:},
1806:},
1779:},
1752:},
1611:**
1545:);
1530:);
1524:\n
1509:);
1470:);
1440:if
1431:);
1419:\n
1368:);
1356:\n
1317:);
1305:\n
1266:);
1260:\n
1221:);
1215:\n
1188:);
1176:\n
1149:);
1143:\n
1122:!=
1110:!=
1101:if
1023:-1
1020:!=
1017:))
987:((
888:**
820:);
646::
583:);
509:--
379:A
374:--
304:,
265:/c
263:,
261:+b
259:,
257:-a
251:,
247:,
229:-a
55:.
3462:.
3442:.
3419:.
3399:.
3385:.
3371:.
3357:.
3343:.
3317:.
3297:.
3283:.
3269:.
3255:.
3241:.
3199:.
3103:.
3078:.
3060:.
3019:.
2962:.
2933:.
2904:.
2874:)
2860:.
2726:.
2607:}
2601:0
2598:(
2592:}
2577:(
2571:}
2562:,
2556:(
2550:{
2547:)
2535:(
2523:(
2517:{
2514:)
2502:(
2496:}
2493:}
2487:c
2484:,
2472:(
2466::
2460:;
2454::
2445:;
2439:;
2433:=
2421:,
2409:(
2403::
2394:;
2388:;
2382:=
2370:,
2358:(
2352::
2343:;
2337:;
2334:1
2331:=
2313:(
2307::
2298:;
2292:;
2289:1
2286:=
2268:(
2262::
2253:;
2244:c
2241:,
2229:(
2223:;
2217:=
2211:}
2196:(
2190:{
2187:)
2172:0
2163:(
2157::
2148::
2139::
2130:;
2112:(
2106:}
2097:,
2091:(
2085:{
2082:)
2076:(
2064:.
2058:,
2052:(
2046::
2043:0
2037:{
2034:)
2031:c
2028:(
2022:;
2019:1
2016::
2010:?
2004:=
1995:{
1992:)
1974:,
1968:,
1962:,
1956:,
1950:(
1944:=
1941:c
1932:;
1929:0
1926:=
1914:}
1911:0
1908:,
1902:,
1899:0
1896:,
1890:{
1884:0
1881:,
1875:,
1869:,
1863:{
1854:,
1848:,
1842:,
1836:{
1830:0
1827:,
1821:,
1815:,
1809:{
1803:0
1800:,
1794:,
1788:,
1782:{
1776:0
1773:,
1767:,
1761:,
1755:{
1749:0
1746:,
1740:,
1734:,
1728:{
1722:{
1719:=
1704:;
1701:0
1698:=
1692:*
1689:,
1686:0
1683:=
1677:*
1671:;
1668:0
1665:=
1659:,
1656:0
1653:=
1644:;
1641:0
1638:=
1629:;
1626:c
1620:{
1617:)
1605:,
1596:(
1548:}
1542:0
1539:(
1533:}
1518:(
1512:}
1503:,
1497:(
1491:{
1488:)
1476:(
1464:(
1458:{
1455:)
1443:(
1437:}
1434:}
1428:c
1425:,
1413:(
1407::
1401:;
1395::
1386:;
1380:;
1374:=
1362:,
1350:(
1344::
1335:;
1329:;
1323:=
1311:,
1299:(
1293::
1284:;
1278:;
1275:1
1272:=
1254:(
1248::
1239:;
1233:;
1230:1
1227:=
1209:(
1203::
1194:;
1185:c
1182:,
1170:(
1164:;
1158:=
1152:}
1137:(
1131:{
1128:)
1113:0
1104:(
1098::
1089::
1080::
1071:{
1068:)
1065:c
1062:(
1056:;
1053:1
1050::
1044:?
1038:=
1029:{
1026:)
1011:,
1005:,
999:(
993:=
990:c
981:;
978:0
975:=
969:*
966:,
963:0
960:=
954:*
948:;
945:0
942:=
936:,
933:0
930:=
921:;
918:0
915:=
906:;
903:c
897:{
894:)
882:,
873:(
814:*
808:,
802:*
790:,
784:*
775:,
766:*
760:,
751:(
706:.
687:;
681:,
675:,
663:;
657:*
626:W
622:o
618:f
614:v
606:W
577:*
568:,
559:*
553:,
544:(
486:e
482:b
478:a
473:.
463:o
456::
446:-
282:(
195:C
181:)
175:(
163:)
157:(
152:)
148:(
134:.
105:)
101:(
91:.
62:)
58:(
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
