Kugadzira mu bash - chikamu 2

Chikamu chechipiri yeizvi mini-dzidziso kuronga mukati Bash, kwatinodzidza kushandisa the duck uye zvimwe zvishandiso zvinotibatsira kuvandudza mashandiro eedu scripts.

Iyo If ine mamiriro

Basa reKana nderekushandisa firita uye kuita oparesheni kana basa kune yega yega firita yakashandiswa. Chimiro chayo chinotevera:

Kana [mamiriro]; ipapo elif anoraira [mamiriro]; zvadaro zvimwe zvinoraira; Fi inorayira

Muenzaniso unoratidzwa padivi peiyo chiuno muchikamu chayo.

Makomba

1. Nepo: ichaita mirairo yese yakatsanangurwa pakati pekuita nekuitwa chero bedzi mamiriro ari echokwadi. Kana isu tichida kupfuudza vanoenzanisa mairi, chirevo chinofanira kunge chiri mumabhureki.

nepo CONDITION / COMMAND ichiita mirairo yaitwa

Semuenzaniso: tafura yekuwedzeredza yenhamba

#! / bin / bash X = 1 echo "Pinda nhamba wobva wadzvanya ENTER" verenga M #The loop controls that X is less than or equal to 10 while [$ X –le 10] do #In R we store the multiplication of X na MR = $ [X * M] #Uku kuwanda kunodhindwa pachiratidziri echo "$ M * $ X = $ R" #Nekuti regai, tinowedzera kukosha kwe X nechiyuniti chimwe rega X = $ X + 1 yaitwa

2. Ye: inochengetera rondedzero yezvinhu musiyano, inozoshandiswa kuita kumwe kuita pamwe nega kutenderera

YEMAHARA NEZVINHU kuita mirairo inoitwa

Semuenzaniso: chirongwa chinoteedzera faira kubva pane imwe folda ichienda pane imwe, ichitsiva yekare faira.

# / bin / bash #Tinogadzira sosi nekwairi kuenda madhairekitori ORIGIN = / imba / mushandisi / Dhawunirodhi DESTINATION = / imba / mushandisi / Zvinyorwa # Isu tinozvimisikidza isu pachedu cd $ ORIGIN #Pamafaera ese, isu tinongoda iyo iyo is # call FILE for FILE in * do ARCH-DESTINATION = "$ DESTINATION / $ FILE" # -f inotisefa mafaera akajairwa, nekuti madhairekitori ari # hapana chakatinakira. –Nt inosvina mafaira # matsva "matsva" pane aya #akawanikwa mune yekuenda folda kana [-f $ FILE] && [$ FILE –nt $ ARCH-DESTINATION]; wobva wadzokorora "Kuteedzera $ FILE ..." # tinoteedzera iyo faira ne cp cp $ FILE $ ARCH-DESTINATION fi yaitwa #Tiri cd kuti tibudise dura rekodhi cd

Mumwe muenzaniso: script apo mushandisi anofanirwa kufungidzira yakasarudzika nhamba inogadzirwa nekombuta.

# / bin / bash # Nhamba yakasarudzika inogadzirwa kubva pa1 kusvika pa10, iri # yakachengetwa muRANDOM RANDOM = $ [$ RANDOM% 10 + 1] nepo [1] ichiita echo -n "Pinda nhamba:" verenga NUM # Enzanisa kana iyo nhamba yakasarudzwa nemushandisi iri # zvakaenzana neRANDOM; rangarira kushandisa $ kuyera izvo # zviyero zvemisiyano uye kwete mazita avo kana ["$ NUM –eq" $ RANDOM "]; wobva wadzokorora "Wazvibata izvo!" #break inobvumidza kupedzisa chiuno panguva break #If iyo nhamba iri pasi peRANDOM elif ["$ NUM –gt" $ RANDOM "]; wobva wadzokorora "Icho chidiki" "Kana zvisiri, icho chakakura kupfuura RANDOM kumwe kunzwika" ICHIKURU "chakaitwa

3. Kusvikira: zvakangofanana muchimiro neNguva, kunze kwekunge kodhi yacho ichigara ichiita apo kuongororwa kwemamiriro acho kwakaipa, ndokuti, chirongwa ichi chinoramba chichiita "kusvikira mamiriro acho aitika"

kusvikira CONDITION / COMMAND yaita mirairo yaitwa

Semuenzaniso: purinda manhamba gumi kusvika gumi mukudzika

#! / bin / bash CONT = 20 # Chero bedzi iyo counter iri pasi pegumi (-lt, "lower #than") kodhi inoitwa kusvika [$ CONT -lt 10]; ita echo "COUNTER $ CONT" # A CONT inobviswa neyuniti let CONT- = 10 yaitwa

4. Sarudza: ino yekupedzisira kutenderera inyaya yakakosha, nekuti inowanzo shandiswa kugadzira mamenyu nekukurumidza. Izvo zvinoshanda zvakafanana neiyo For chiuno.

Sarudza VARIABLE muRISTI yemirairo yakaitwa

Semuenzaniso: ipa mushandisi kugona kuenderera kana kupedza script.

#! / bin / bash #item musiyano unopindura izvo zvinosarudzwa nemushandisi, Enderera uye Pedzisa ndiwo #asarudzo aanowana kwaari, kunyange hazvo dzimwe sarudzo dzichigona kuwedzerwa # zvimwe sarudza chinhu muRamba Kupedzisa ita #Kana mushandisi akasarudza kupedza chirongwa, uye nekuzorora isu tinobuda mukutenderera. kana [$ chinhu = "Pedza"]; wobva wapaza kuita