Ungaphuma kwiscript nakweyiphi na indawo usebenzisa igama elingundoqo lokuphuma . Ungaphinda uchaze ikhowudi yokuphuma ukuze ubonise kwezinye iinkqubo ukuba okanye indlela umbhalo wakho owasilela ngayo, umz. phuma 1 okanye phuma 2 njl.njl.
Uphuma njani kwiscript?
Ukuba iskripthi siphela ngokuphuma ngaphandle kokuchaza iparamitha, ikhowudi yokuphuma yescript yeyomyalelo wokugqibela owenziweyo kwiscript. Ukusebenzisa ukuphuma nje kuyafana nokuphuma $? okanye ukushiya indlela yokuphuma . Ukuba usebenzisa iskripthi njengengcambu, ikhowudi yokuphuma iya kuba ngunothi. Kungenjalo, iskripthi siya kuphuma ngesimo soku-1.
Ndiphuma njani kwiskripthi se-bash?
Ungasebenzisa umyalelo wekhefu ukuphuma kuyo nayiphi na i-loop, njengexesha kunye ne-loops. Ilophu ibaleka ide ifike ku-14 emva koko umyalelo uphume kwilophu. Umyalelo uphuma ngexesha loop, kwaye oko kwenzeka xa uphumezo lufikelela kwingxelo ye if.
Uthini umahluko phakathi kokuPhuma ku-0 kunye nokuPhuma koku-1 kwiskripthi seqokobhe?
ukuphuma (0) kubonisa ukuba inkqubo iphelisiwe ngaphandle kweempazamo. ukuphuma(1) kubonisa ukuba bekukho impazamo. Ungasebenzisa amaxabiso ahlukeneyo ngaphandle kwe-1 ukwahlula phakathi kweempazamo ezahlukeneyo.
Uphuma njani kwiscript ukuba umyalelo uyasilela?
-e Phuma ngoko nangoko ukuba umyalelo uphuma ngesimo esingeso-zero. Ke ukuba nayiphi na imiyalelo yakho ayiphumelelanga, iskripthi siya kuphuma. Ungaphuma kwiscript nakweyiphi na indawo usebenzisa igama elingundoqo lokuphuma . Ungaphinda uchaze ikhowudi yokuphuma ukuze ubonise kwezinye iinkqubo ukuba okanye indlela umbhalo wakho owasilela ngayo, umz. phuma 1 okanye phuma 2 njl.njl.
Ndisiqhuba njani iskripthi kwiLinux?
Amanyathelo okubhala kunye nokwenza iskripthi
- Vula isigxina. Yiya kulawulo apho ufuna ukwenza iscript sakho.
- Yenza ifayile nge. sh ulwandiso.
- Bhala iskripthi kwifayile usebenzisa umhleli.
- Yenza okushicilelweyo kuphunyezwe ngomyalelo chmod +x .
- Sebenzisa iscript usebenzisa ./ .
Uyibulala njani loop yokwenyani?
Cinezela u-Ctrl+C ukubulala.
Ngowuphi umyalelo osetyenziswayo ukwaphula iibhloko zetyala?
ibreak command isetyenziselwa ukuphelisa ukuphunyezwa kwe loop, ngelixa loop kwaye kude kube loop. Isenokuthatha iparameter enye ie [N]. Nantsi i-n inani le-loops enendlwana yokuqhawula.
Yintoni Phuma 1 kwiskripthi seqokobhe?
Sibhala "phuma 1" kwiskripthi seqokobhe xa sifuna ukuqinisekisa ukuba iskripthi sethu siphume ngempumelelo okanye hayi. Sonke iskripthi okanye umyalelo okwilinux ubuyisela imeko yokuphuma enokubuzwa kusetyenziswa umyalelo othi "echo $?".
Yintoni umyalelo wokuPhuma kwiLinux?
Umyalelo wokuphuma kwi-linux usetyenziswa ukuphuma kwiqokobhe apho lisebenza khona ngoku. Ithatha enye iparameter njengo [N] kwaye iphuma kwiqokobhe ngobuyiselo lwesimo N. Ukuba n ayinikezelwanga, ngoko ibuyisela ngokulula iwonga lomyalelo wokugqibela owenziweyo. Isintaksi: phuma [n]
Kutheni Phuma ku-0 kusetyenziswa kwiskripthi seqokobhe?
Ngemiyalelo ye-bash ikhowudi yokubuyisela u-0 ngokuqhelekileyo ithetha ukuba yonke into yenziwe ngempumelelo ngaphandle kweempazamo. Ukuphuma kwenza ukuba iskripthi sakho siyeke uphumezelo ngelo xesha kwaye ubuyele kumgca womyalelo.
Uphuma njani kwiscript kwi Unix?
Ukuphelisa iskripthi seqokobhe kunye nokuseta ubume balo bokuphuma, sebenzisa umyalelo wokuphuma. Nika ukuphuma imeko yokuphuma ekufuneka iskripthi sakho sibe nayo. Ukuba ayinawo ubume obucacileyo, izakuphuma ngemo yomyalelo wokugqibela.
Ndiyikhupha njani impazamo yeskripthi se-bash?
Oku kunokwenziwa ngelayini enye usebenzisa i-set buildin umyalelo ngo-e ukhetho. Ukubeka oku phezulu kweskripthi se-bash kuya kubangela ukuba iskripthi siphume ukuba nayiphi na imiyalelo ibuyisela ikhowudi yokuphuma engeyiyo-zero.
Wenza njani ukuba kwenye i-bash?
Ukuba UVAVANYO-COMMAND luvavanya ukuya kwiNyaniso, i STATEMENTS1 iya kuphunyezwa. Kungenjalo, ukuba TEST-COMMAND ibuyisela False , STATEMENTS2 iya kuphunyezwa. Unokuba nelinye igatya kuphela kwingxelo.