setha - Funda futhi ubhale iziguquko
Isiqubulo
setha i- varName ? xabisa ?
Incazelo
Ibuyisa inani le-variable varName . Uma inani licacisiwe , bese usethe inani le- varName elizolibaluleka , udale uhlobo olusha uma umuntu engakabi khona, futhi abuyisele inani layo. Uma i- varName iqukethe i-parenthesis evulekile futhi iphetha nge-parenthesis esondelene, ke ibhekisela kwisici se-array: izinhlamvu ngaphambi kwe-parenthesis yokuqala evulekile yigama lombhalo, futhi izinhlamvu eziphakathi kwabazali bomndeni ziyizinkomba ngaphakathi. Kungenjalo i- varName ibhekisela ekuguqukeni kwe-scalar. Ngokujwayelekile, i- varName ayifanele (ayifaki amagama kwanoma iyiphi enye equkethe amagama), futhi okuguquguqukayo kwelo gama ku-namespace yamanje kufundwa noma kubhaliwe. Uma i- varName ihlanganisa izitifiketi ze- namespace (egameni le-array uma libhekisela kwisici se-array), ukuguquguquka endaweni ecacisiwe yamagama kufundwa noma kubhaliwe.
Uma kungenjalo inqubo esebenzayo, i- varName ibhekisela kuguquguquko lwamagama (ukuguquguquka komhlaba wonke uma indawo yamagama yamanje yendawo yegama lomhlaba jikelele). Uma inqubo isebenza, i- varName ibhekisela kupharamitha noma ukuhluka kwendawo yenqubo ngaphandle uma umyalo womhlaba wonke uceliwe ukuba umemezele ukuthi i- varName ibe yimbulunga yonke, noma ngaphandle kokuthi umyalo oguquguqukayo uceliwe ukuba umemezele ukuthi i- varName ibe yi-variable spacepace.
Izinketho
-iMar variables eziguqulwa noma ezidalwe ukuthunyelwa ngaphandle. -B Yazisa ngokuqedwa komsebenzi ngokushesha. -i Phuma ngokushesha uma umyalo uphuma ngesimo esingenayo indawo. -f Khubaza ukukhiqizwa kwegama lefayela (ukugubha). -h Khumbula indawo yemilayezo njengoba ibuka phezulu. -k Zonke izimpikiswano zesabelo zifakwa endaweni yokuthola umyalo, hhayi nje kuphela lezo ezandulela igama lomyalo. -m Ukulawulwa kweJobe kunikwe amandla. -n Funda imiyalo kodwa ungawasebenzisi. -o khetho-igama Ukubeka okuguquguqukayo okuhambisana nenketho-igama: i-allexport efana ne -a braceexpand efanayo ne -B emacs isebenzisa i-emacs-style style editing interface efana ne-e errtrace efana no -Ekrectra efanayo -Iyinto efanayo njengoba -h okungafani nalokhu -I-historia ivumela umlando womyalo ukunganakwa kwegobolondo ngeke iphume ekufundeni i-EOF interactive-comments ivumela ukuphawula ukuthi kuvele kumilayezo exhumanayo igama elingukhiye elifana ne--k ukuqapha okufana ne--m noclobber efana no -C noexec efanayo - n noglob efana no -f nolog okwamanje eyamukelwa kodwa engaziwa ukwazisa okufanayo -nomsebenzisi wegama elifanayo -kufana nalokho -kufana nomzimba ofana ne -PP inani lokubuyisela kwepayipi yisimo somyalo wokugcina wokuphuma nge-non -zero isimo, noma i-zero uma kungekho myalelo ophumayo nge-non-zero isimo se-posix shintsha ukuziphatha kwebhashi lapho ukusebenza okuzenzakalelayo kuhluke khona kumgangatho we-Posix ukufanisa inamba evamile efanayo ne--p verbose efanayo -usebenzisa i-vi- isitayela sokuhlela umugqa wesitayela xtrace efanayo -x -p Kuvuliwe noma nini lapho i-ids yomsebenzisi yangempela futhi ephumelelayo ingafani. Ikhubaza ukucubungula kwefayela le-$ ENV nokungenisa kwemisebenzi yegobolondo. Ukuguqula le nketho kubangela ukuba u-uid ne-gid ephumelelayo ihlelwe ku-uid kanye ne-gid yangempela. -i Phuma emva kokufunda nokusebenzisa umyalo owodwa. -u Phatha ukushintsha okungahleliwe njengephutha uma ushintsha. -v Phrinta imigqa yokufaka igobolondo njengoba ifundwa. Imithetho yokuprinta -x kanye nezimpikiswano zabo njengoba zenziwa. -B igobolondo izokwenza ukwandiswa kwe-brace -C Uma isethwe, ungavumeli amafayela ajwayelekile ajwayelekile abhalwe phansi ngokuhlelwa kabusha kokukhipha. -E Uma ihlelwe, isicupho se-ERR sizuzwa njenge-shell shell. -H Vumela! umlando wesitayela ukufaka esikhundleni. Leli flegi likhona ngokuzenzakalelayo uma igobolondo lihlanganyela. -P Uma isethwe, ungalandeli izixhumanisi ezingokomfanekiso uma uqhuba imiyalo efana ne-cd eguqula isiqondisi samanje. -T Uma ihlelwe, umculi we-DEBUG uzuze ifa lomsebenzi wegobolondo. - Nikeza noma yikuphi ukuphikisana okusele kumingcele yemibandela. Izinketho ze--x no -v zivaliwe. Ukusebenzisa + kunokuba-kubangele ukuthi lezi zigilagi zivaliwe. Amafulege angasetshenziswa futhi lapho ecela igobolondo. Isethi yamanje yamafulege ingatholakala ku-$ -. Ama-ARG asele ayimingcele yesikhashana futhi abelwe, ukuze, ku-$ 1, $ 2, .. $ n. Uma kungekho ama-ARG anikezwa, zonke izinguquko zegobolondo zinyatheliswa. Isimo sokuphuma: Buyisela impumelelo ngaphandle kokuthi inketho engavumelekile inikwe.Bona futhi
expr (n), proc (n), landela (n), hlela (n)
Amagama angukhiye
funda, bhala, uguquke
Okubalulekile: Sebenzisa umyalo womuntu ( % umuntu ) ukuze ubone ukuthi umyalo usetshenziswe kanjani kukhompyutha yakho ethile.