Ngikudlulisa kanjani okuguquguqukayo kusuka kumbhalo wegobolondo owodwa kuya kwesinye?
Unezinketho ezimbili:
- Yenza okuguquguqukayo kube okuguquguqukayo kwemvelo ( thekelisa i-TESTVARIABLE ) ngaphambi kokusebenzisa umbhalo wesi-2.
- Umthombo weskripthi sesi-2, isb. test2.sh futhi izosebenza kugobolondo elifanayo.
Ungawenza kanjani umehluko ku-UNIX?
Izimpikiswano noma okuguquguqukayo kungase kudluliswe kusikripthi segobolondo. Vele ubhale kalula izimpikiswano emugqeni womyalo lapho usebenzisa iskripthi segobolondo. Kuskripthi segobolondo, i-$0 yigama lomyalo wokugijima (imvamisa igama lefayela leskripthi segobolondo); $1 impikiswano yokuqala, $2 impikiswano yesibili, $3 impikiswano yesithathu, njll...
Usibiza kanjani iskripthi esisodwa kwesinye iskripthi ku-Unix?
Kunezindlela ezimbalwa ezahlukene ongakwenza ngazo lokhu:
- Yenza esinye iskripthi sisebenziseke, engeza umugqa othi #!/bin/bash phezulu, kanye nendlela lapho ifayela liya kokuguquguquka kwemvelo kwe-$PATH. …
- Noma uyibize ngomyalo womthombo (isibizo siwukuthi . ) ...
- Noma sebenzisa umyalo we-bash ukuze uwenze: /bin/bash/path/to/script ;
Ngikudlulisa kanjani ukuguquguquka kwemvelo kusikripthi se-bash?
Ukuhlukahluka kwendawo
Imibhalo ye-Bash nayo ingadluliswa nezimpikiswano ngendlela yokuguquguquka kwemvelo. Lokhu kungenziwa nganoma iyiphi yalezi zindlela ezilandelayo: Icacisa inani eliguquguqukayo ngaphambi komyalo wokwenza iskripthi. Ithekelisa okuguquguqukayo bese isayinda iskripthi.
Yini i-$@ bash?
bash [igama lefayela] liyagijima imiyalo egcinwe efayeleni. $@ ibhekisela kuzo zonke izimpikiswano zomugqa womyalo weskripthi segobolondo. $1 , $2 , njll., bhekisela empikiswano yokuqala yomugqa womyalo, impikiswano yesibili yomugqa womyalo, njll. … Ukuvumela abasebenzisi banqume ukuthi yimaphi amafayela okufanele bawacubungule okuvumelana nezimo futhi kuhambisana kakhulu nemiyalo ye-Unix eyakhelwe ngaphakathi.
Usibhala kanjani isimo uma ngabe esinye isimo kuskripthi segobolondo?
Incazelo yabo nge-syntax imi kanje:
- uma isitatimende. Lokhu kuvinjwa kuzocutshungulwa uma isimo esishiwo siyiqiniso. …
- uma-enye isitatimende. …
- if..elif..else..fi statement (Okunye Uma ileli) …
- uma..bese..okunye..uma..bese..fi..fi..(Ifakwe uma) …
- I-syntax: icala kuPhethini 1) Isitatimende 1;; Iphethini n) Isitatimende n;; esac. …
- Isibonelo 2:
Yini i-$? Ku-Unix?
I-$? okuguquguqukayo imele isimo sokuphuma somyalo odlule. Isimo sokuphuma siyinani lenombolo elibuyiswa yinoma yimuphi umyalo lapho uqedwa. … Isibonelo, eminye imiyalo ihlukanisa phakathi kwezinhlobo zamaphutha futhi izobuyisela amanani ahlukahlukene okuphuma kuye ngohlobo oluthile lokwehluleka.
Iyini i-$1 script Linux?
$ 1 kuyinto impikiswano yokuqala yomugqa womyalo idluliselwe kumbhalo wegobolondo. … $0 igama lombhalo ngokwawo (script.sh) $1 iyimpikiswano yokuqala (igama lefayela1) $2 impikiswano yesibili (dir1)
Iyini i-$$ ku-Unix?
$$ ngu i-ID yenqubo (PID) yombhalo ngokwawo. I-$BASHPID i-ID yenqubo yesehlakalo samanje se-Bash. Lokhu akufani nokuguquguquka kwe-$$, kodwa ngokuvamile kunikeza umphumela ofanayo. https://unix.stackexchange.com/questions/291570/what-is-in-bash/291577#291577. Kopisha isixhumanisi CC BY-SA 3.0.
Ngilisebenzisa kanjani ifayela leskripthi segobolondo?
Izinyathelo zokubhala nokwenza iskripthi
- Vula ukuphela. Iya enkombeni lapho ufuna ukudala khona umbhalo wakho.
- Dala ifayela nge. sh ukunwetshwa.
- Bhala iskripthi kufayela usebenzisa isihleli.
- Yenza iskripthi sisebenze ngomyalo chmod + x
. - Qalisa iskripthi usebenzisa i- ./
.
Zisebenza kanjani izikripthi ze-bash?
Isikripthi se-Bash siyifayela lombhalo elingenalutho iqukethe uchungechunge lwemiyalo. Le miyalo iyinhlanganisela yemiyalo esijwayele ukuyithayipha emugqeni womyalo (njenge-ls noma i-cp ngokwesibonelo) kanye nemiyalo esingayithayipha emugqeni womyalo kodwa ngokuvamile singavumi (uzothola lokhu emakhasini ambalwa alandelayo. ).
Ungamisa kanjani okuguquguqukayo ku-bash?
Indlela elula yokusetha okuguquguqukayo kwemvelo ku-Bash iwukuba sebenzisa igama elingukhiye elithi "thekelisa" elilandelwa igama eliguquguqukayo, uphawu olulinganayo kanye nenani elizonikezwa okuguquguqukayo kwemvelo.
Ngihlola kanjani ukuthi i-variable yemvelo isethwe ku-bash?
Ukuqinisekisa ukuthi okuguquguqukayo kusethiwe noma cha ku-Bash Scripting, singasebenzisa -v var noma -z ${var} izinketho njengenkulumo enenhlanganisela 'uma' umyalo onemibandela.
Ngifinyelela kanjani kokuguquguquka kwemvelo?
Chofoza kwesokudla isithonjana Sekhompyutha bese ukhetha Properties, noma ku-Windows Control Panel, khetha System. Khetha izilungiselelo zesistimu ethuthukisiwe. Kuthebhu ethi Okuthuthukile, chofoza Okuguquguqukayo Kwemvelo. Chofoza Okusha ukuze udale okuhlukile kwemvelo okusha.