Ukuqondisa kabusha kanjani okukhiphayo okujwayelekile kufayela eliku-Linux?
Uhlu:
- umyalo > okukhiphayo.txt. Ukusakaza okujwayelekile okukhiphayo kuzoqondiswa kabusha kufayela kuphela, ngeke kubonakale kutheminali. …
- umyalo >> okukhiphayo.txt. …
- umyalo 2> okukhiphayo.txt. …
- umyalo 2 >> okukhiphayo.txt. …
- umyalo &> ukuphuma.txt. …
- umyalo &>> ukuphuma.txt. …
- umyalo | i-tee output.txt. …
- umyalo | tee -a okukhiphayo.txt.
Ngikuqondisa kanjani kabusha okukhiphayo okujwayelekile?
Okunye ukusetshenziswa okuvamile kokuqondisa kabusha okukhiphayo ngu iqondisa kabusha i-stderr kuphela. Ukuqondisa kabusha isichazi sefayela, sisebenzisa N> , lapho u-N eyisichazi sefayela. Uma singekho isichazi sefayela, kusetshenziswa i-stdout, njengaku-echo hello > new-file .
Imuphi umyalo osetshenziswayo ukuqondisa kabusha nokwengeza okukhiphayo efayeleni?
Faka umyalo wegobolondo Lokuqondisa kabusha
The >> umyalo wegobolondo isetshenziselwa ukuqondisa kabusha okukhiphayo okujwayelekile komyalo kwesokunxele bese wengeza (uwengeze) ekupheleni kwefayela kwesokudla.
Ngiliqondisa kanjani kabusha iphutha elijwayelekile ku-bash?
I-2> iwuphawu lokuqondisa kabusha okokufaka kanye ne-syntax ithi:
- Ukuqondisa kabusha i-stderr (iphutha elivamile) efayeleni: umyalo 2> errors.txt.
- Masiqondise kabusha kokubili i-stderr ne-stdout (okukhiphayo okujwayelekile): umyalo &> ukuphuma.txt.
- Ekugcineni, singaqondisa kabusha i-stdout efayeleni elinegama elithi myoutput.txt, bese siqondisa kabusha i-stderr ku-stdout sisebenzisa 2>&1 (errors.txt):
Kuyini okokufaka okujwayelekile ku-Linux?
I-Linux Standard Streams
Ku-Linux, stdin ukusakaza okokufaka okujwayelekile. Lokhu kwemukela umbhalo njengokufaka kwawo. Okukhipha umbhalo ophuma kumyalo oya kugobolondo ulethwa ngokusakaza kwe-stdout (okujwayelekile). Imilayezo yephutha evela emyalweni ithunyelwa ngokusakaza kwe-stderr (iphutha elivamile).
Ukubhala kanjani okuqukethwe kwefayela ku-Linux?
Ukuze udale ifayela elisha, sebenzisa i- umyalo wekati kulandelwa u-opharetha wokuqondisa kabusha ( > ) kanye negama lefayela ofuna ukulenza. Cindezela u-Enter, thayipha umbhalo bese uma usuqedile, cindezela u-CRTL+D ukuze ulondoloze ifayela. Uma ifayela eliqanjwe ifayela1. i-txt ikhona, izobhalwa ngaphezulu.
Kuyini ukuqondisa kabusha okukhiphayo okujwayelekile?
Uma Inqubo ibhala umbhalo ekusakazeni kwawo okujwayelekile, lowo mbhalo uvame ukuboniswa kukhonsoli. Ngokusetha i-RedirectStandardOutput ibe iqiniso ukuze uqondise kabusha ukusakaza kwe-StandardOutput, ungakwazi ukukhohlisa noma ukucindezela okukhiphayo kwenqubo. … Ukusakaza okuqondiswe kabusha kwe-StandardOutput kungaba funda ngokuhambisanayo noma ngokuhambisanayo.
Kwenzekani uma ngiqondisa kabusha kuqala i-STDOUT kufayela bese ngiqondisa kabusha i-stderr kufayela elifanayo?
Uma uqondisa kabusha kokubili okukhiphayo okujwayelekile kanye nephutha elivamile efayeleni elifanayo, ungase uthole imiphumela engalindelekile. Lokhu kungenxa yokuthi I-STDOUT iwukusakaza okunesifa ngenkathi i-STDERR ihlezi ingabhafa.
Yiziphi kulezi zimpawu ezizoqondisa kabusha iphutha elijwayelekile efayelini?
Uma ufuna ukuqondisa kabusha okokufaka okujwayelekile noma okukhiphayo okujwayelekile, ungasebenzisa i <, >, noma > > izimpawu. Nokho, uma ufuna ukuqondisa kabusha iphutha elijwayelekile noma okunye okukhiphayo, kufanele usebenzise isichazi sefayela.
Ngiliqondisa kanjani kabusha iphutha nokukhiphayo kufayela?
Izimpendulo ze-2
- Qondisa kabusha i-stdout kufayela elilodwa bese u-stderr uye kwelinye ifayela: umyalo> ukuphuma 2>iphutha.
- Qondisa kabusha i-stdout kufayela ( >out ), bese uqondisa kabusha i-stderr ku-stdout ( 2>&1 ): umyalo > ukuphuma 2>&1.
Ngifaka kanjani efayelini?
Ngakho-ke ukwengeza efayelini kulula njengokuthi: f = vula('igama lefayela. txt', 'a') f. bhala('noma yini ofuna ukuyibhala lapha (kwimodi yokwengeza) lapha.
Uyini umyalo wokushintsha ubunikazi beqembu befayela?
Shintsha umnikazi weqembu wefayela ngokusebenzisa i- umyalo we-chgrp. Icacisa igama leqembu noma i-GID yeqembu elisha lefayela noma uhla lwemibhalo.
Uliqondisa kanjani kabusha iphutha?
Uma uqondisa kabusha okukhiphayo kwekhonsoli usebenzisa > uphawu, uqondisa kabusha i-STDOUT kuphela. Ukuze uqondise kabusha i-STDERR, kufanele ucacise 2> kube uphawu lokuqondisa kabusha.
Uzowuqondisa kanjani kabusha umlayezo wephutha ku-Linux?
U-opharetha wokuqondisa kabusha (umyalo > ifayela) uqondisa kabusha kuphela okukhiphayo okujwayelekile ngakho-ke, iphutha elijwayelekile lisavezwa kutheminali. Iphutha elijwayelekile elizenzakalelayo yisikrini. Iphutha elijwayelekile lingaphinde liqondiswe kabusha ukuze imilayezo yephutha ingahlanganisi okukhiphayo kohlelo.
Ngiqondisa kanjani kabusha ku-bash?
Ngokuvamile ungakwazi bhala umyalo n>ifayela , ezoqondisa kabusha isichazi sefayela n efayeleni . Iqondisa kabusha okukhiphayo komyalo we-ls kufayela_lohlu. Lapha i-bash iqondisa kabusha i-stderr kufayela. Inombolo 2 imele i-stderr.