Inkqubo kwi-bash-icandelo le-2

Inxalenye yesibini yoku mini-isifundo Inkqubo kwi Bash, apho sifunda ukusebenzisa Imijikelezo kunye nezinye izixhobo eziza kusinceda siphucule ukusebenza kwe zeempendulo.

Ukuba ngaba unemiqathango

Umsebenzi we Ukuba ukusebenzisa icebo lokucoca ulwelo nokwenza umsebenzi okanye uhlobo kuhlobo ngalunye lwefayile esetyenzisiweyo. Ubume bayo ngolu hlobo lulandelayo:

Ukuba [imeko]; emva koko uEli uyalela [imeko]; emva koko iyalela; fi imiyalelo

Umzekelo ubonisiwe ecaleni kwe-loop kwicandelo lawo.

Imijikelo

1. Ngelixa: iyakwenza yonke imiyalelo echaziweyo phakathi kwento eyenziweyo kunye neyenziweyo ukuba imeko iyinyani. Ukuba sifuna ukudlulisa abaqhubi bokuthelekisa kuyo, intetho kufuneka ibe kwizibiyeli.

ngelixa IMIQATHANGO / UMYALELO usenza imiyalelo

Umzekelo: itheyibhile yokuphindaphinda yenani

#! / bin / bash X = 1 echo "Faka inombolo kwaye ucinezele ENTER" funda M #Ukulawulwa kweluphu okuthi X ingaphantsi okanye ilingana no-10 ngelixa [$ X –le 10] isenza # In R sigcina ukuphindaphinda kwe X ngu MR = $ [X * M] # Olu phindaphindo lushicilelwe kwiscreen echo "$ M * $ X = $ R" #Ngoku, masonyuse ixabiso le-X ngeyunithi enye let X = $ X + 1 yenziwe

2. Ku: kugcina uluhlu lwezinto kuguquko, oluya kusetyenziswa ukwenza imisebenzi ethile kumjikelo ngamnye.

YOKUFANELEKILEYO kwii-Elements yenze imiyalelo

Umzekelo: inkqubo ekopa ifayile kwifolda enye ukuya kwenye, endaweni yefayile endala.

# / bin / bash #Senza imithombo yolwazi kunye nendawo yokuyalela ORIGIN = / ikhaya / umsebenzisi / Ukhuphelo DESTINATION = / ikhaya / umsebenzisi / Amaxwebhu # Sizibeka kwindawo yomthombo cd $ OKUQALA kuzo zonke iifayile, sifuna kuphela leyo is # call FILE for FILE in * do ARCH-DESTINATION = "$ DESTINATION / $ FILE" # -f Iifilitha zethu iifayile eziqhelekileyo, kuba iirejista #zinto ezilungileyo kuthi. Iifilitha ze -Nt # iifayile "ezintsha" kunezo # zifunyenwe kwifolda yendawo ukuba [-f $ FILE] && [$ FILE –nt $ ARCH-DESTINATION]; ke echo "Ukukopa $ FILE ..." # sikopa ifayile nge cp cp $ FILE $ ARCH-DESTINATION fi yenziwe #Senza cd ukuphuma kwifolda yomthombo cd

Omnye umzekelo: iskripthi apho umsebenzisi kufuneka aqikelele inani elingahleliwe elenziwe yikhompyuter.

# / bin / bash # Inani elingahleliwe liveliswa ukusuka ku-1 ukuya kwi-10, ligciniwe # kwiRANDOM RANDOM = $ [$ RANDOM% 10 + 1] ngelixa [1] isitsho -n "Faka inombolo:" funda i-NUM # Thelekisa ukuba inani elikhethwe ngumsebenzisi #lilingana neRANDOM; khumbula ukusebenzisa i $ ukuphonononga # amaxabiso ezinto eziguquguqukayo hayi amagama abo ukuba ["$ NUM –eq" $ RANDOM "]; ke phinda uthi "Uyifumene kakuhle!" #break kuvumela ukuphela komtya ngelixa break #If inani lingaphantsi kweRANDOM elif ["$ NUM –gt" $ RANDOM "]; ke echo "Kuncinci" "Ukuba akunjalo, inkulu kune RANDOM enye i-echo" IT IS great "fi done

3. Kude kube: kufana ncam kulwakhiwo ukuya Ngelixa, ngaphandle kokuba ikhowudi ihlala iqhuba ngelixa kuvavanywa imeko kukubi, Oko kukuthi, inkqubo iyaqhubeka nokwenza "de imeko yenzeke"

Kude kube kwenziwe UMGANGATHO / UMYALELO wenze imiyalelo

Umzekelo: phrinta iinombolo ezili-10 ukuya ku-20 ngokulandelelana kwazo

#! / bin / bash CONT = 20 # Logama nje ikhawuntari ingaphantsi kwe-10 (-lt, "isezantsi # kunoko") ikhowudi yenziwa de kube yi- [$ CONT -lt 10]; yenza i-echo "COUNTER $ CONT" # A I-CONT ikhutshwe yiyunithi let CONT- = 1 yenziwe

4. Khetha: lo mjikelo wokugqibela uyimeko ekhethekileyo, kuba ihlala isetyenziselwa ukwenza iimenyu ngokukhawuleza. Isebenza ngokufana nelog.

khetha VARIABLE kuLUhlu lwemiyalelo eyenziweyo

Umzekelo: nika umsebenzisi amandla okuqhubeka okanye okuphelisa iskripthi.

#! / bin / bash #item ngumahluko ophendulayo kwinto oyikhethayo #umsebenzisi, Qhubeka kwaye ugqibezele zezi #zikhetho ezikhoyo kuye, nangona ezinye iindlela zinokongezwa # ezinye izinto ezikhethiweyo kuQhubeka Gqibezela yenza #Ukuba umsebenzisi ukhetha ukugqiba inkqubo, emva koko ngekhefu siyaphuma kumjikelo. ukuba [$ item = "Gqiba"]; emva koko kuqhekezwe