usethe - Funda kwaye ubhale iimpawu
Isiqendu
ubeke varName ? xabiso ?
Inkcazo
Ibuyisela ixabiso le variable varName . Ukuba ixabiso lichazwe, uze usethe ixabiso le- varName ukuba lixabise , ukudala uguqulo olutsha ukuba umntu akakho, kwaye abuyisele ixabiso layo. Ukuba i- varName iqulethe i-parenthesis evulekile kwaye iphelela ngabazali abafutshane, ngoko ibhekisela kwisakhi sendawo: abalinganiswa phambi kokuba abazali bokuqala bavule igama liluhlu, kwaye abalinganiswa phakathi kwabazali baba yinkcazo ngaphakathi kwinqanaba. Ngaphandle kwalokho varName ibhekisela kwisitshixo se-scalar. Ngokuqhelekileyo, i- varName ayifanelekanga (ayifaki amagama abo naluphi na indawo enegama), kwaye ukuguquguquka kwelo gama kwi-namespace yangoku ifundwa okanye ibhaliwe. Ukuba i- varName iquka abadlali be- namespace (kwigama eliluhlu xa libhekisela kwinto elandeleleneyo), uguquko kwi- space names ecacisiweyo lifundwa okanye libhalwa.
Ukuba akukho nqubo isebenzayo, ngoko- varName ibhekisela kumatshintshi e-namespace (iinguqu zomhlaba wonke ukuba indawo yamagama ekhoyo yindawo yegama jikelele). Ukuba inkqubo isebenzayo, ngoko- varName ibhekisela kwiparameter okanye uguquko lwengingqi lwenkqubo ngaphandle kokuba umyalelo womhlaba wonke uceliwe ukuba uvakalise i- varName ukuba ibe yihlabathi jikelele, okanye ngaphandle kokuba umyalelo oguqukileyo uceliwe ukuvakalisa i- varName ukuba ibe yinto eguquguqukayo yegama.
Khetha
-iMar variables eziguqulelwe okanye ezidalwe ukuthumela ngaphandle. -B Yazisa ngokupheliswa komsebenzi ngokukhawuleza. -i Phuma ngokukhawuleza ukuba umyalelo uphuma ngesimo esingenalo. -i Khubaza igama lokwakheka kwefayile (i-globbing). -U Khumbula indawo yimiyalelo njengoko ikhangelelwe phezulu. -k Zonke izabelo zengxoxo zifakwe kwimeko yemo myalelo, kungekhona nje ezo zilandele igama lomyalelo. -m Ulawulo lomsebenzi luvunyelwe. -Funda imilayezo kodwa ungawaphumezi. -okhetho-igama-magama Beka iguquguquko ehambelana nekhetho-igama: i-allexport efanayo -e-braceexpand efanayo--B emacs isebenzise indlela yokuhlela i-emacs-style equrexit efanayo -e-errtrace efanayo ne -Ectrogram efanayo njenge -h engaqhelekanga--Imbali ivumela ukuba imbali yomyalelo ingabikho nto igobolondo ayiyi kuphuma xa ifunda I-EOF-comments-interactive ivumela ukuba izimvo zivele kwiimigaqo edibeneyo yegama eliphambili elifanayo ne--k lijongana ne--m neclobber efanayo -C noexec efanayo - I-noglob efana ne-nolo okwangoku yamkelwe kodwa ingayityeswanga iyazisa enye--nokubhaliweyo okufanayo--nokufana ne--mzimba efana ne -PP yokufa kwexabiso lokubuyisela kwipayipi yimiqathango yomyalelo wokugqibela wokuphuma ngaphandle isimo se -zero, okanye i-zero ukuba akukho myalelo ophumayo ne-non-zero status posix utshintshe ukuziphatha kwebhasti apho ukusetyenziswa okungekho mthethweni kuyahluka kumgangatho wePosix ukulinganisa ilungelo elifanayo elifanayo--p verbose efanayo -usebenzisa i-vi- I-style style editing interface Umxholo ofana ne--x -p Uguqukile naliphi na i-ids yomsebenzisi wangempela kwaye esebenzayo ayifani. Ikhubaza ukucwangciswa kwefayili ye-ENV yefayile kunye nokungenisa kweemisebenzi zebhokisi. Ukuguqula okukhethiweyo kubangela ukuba usebenze ngokufanelekileyo kunye ne-gid ukuba isetyenziswe ku-real uid kunye ne-gid. -iphuma emva kokufunda nokuqhuba umyalelo owodwa. -u Phatha ukuguqula ukuguquguquka njengephutha xa uthabatha. -v Phrinta imigca yokufakelwa kwegobolongo njengoko ifundwayo. -x Ukushicilela imiyalelo kunye neengxabano zabo njengoko zenziwa. -B igobolondo iya kwenza ukwandiswa kwe-brace -C Ukuba isetyenziswe, ungavumeli iifayile eziqhelekileyo ezikhoyo ukuba zibhalwe ngokutsha kwakhona. -E Ukuba isetyenziswe, umgibe we-ERR uzuze iifom ze-shell. -H Nceda! indawo yomlando endaweni. Le flegi ifakwe ngokungagqibekanga xa igobolondo isebenzisana. -P Ukuba isetyenziswe, ungalandeli iifayile ezifanisayo xa uqhuba imiyalelo efana ne cd eguqula ulawulo lwangoku. -U Ukuba isetyenziswe, umgibe we DEBUG uzuze iifom ze-shell. - Yenza nayiphi na ingxoxo eziseleyo kwiiparitha zemeko. Izinketho ze--x kunye -v zivaliwe. Ukusebenzisa + kunokuba-kubangela ukuba ezi flegi zicime. Iiflegi zingasetyenziselwa ekukhunjweni kwegobolondo. Isethi yamanje yeeflegi zifumaneka kwi $ -. I-ARG ezisele ziyimimiselo yeemeko kwaye zinikezelwe, ukwenzela, ukuya ku-$ 1, $ 2, .. $ n. Ukuba akukho zixhobo ze-ARG zinikezelwa, zonke iinguqu zemiqulu yeekhanda ziprintwe. Isimo sokuphumayo: Ukubuyisela impumelelo ngaphandle kokuba kukho inketho engavumelekanga.Bona kwakho
expr (n), proc (n), landela (n), cwangcisa (n)
Amagama angundoqo
funda, bhala, uguquke
Kubalulekile: Sebenzisa umyalelo womntu ( % umntu ) ukubona indlela umyalelo usetyenziswa ngayo kwiikhomputha yakho ethile.