Ngiwasusa kanjani amafayela ayimpinda ku-Linux?
Umyalo we-uniq isetshenziselwa ukususa imigqa eyimpinda efayeleni lombhalo ku-Linux. Ngokuzenzakalelayo, lo myalo ulahla konke ngaphandle kowokuqala wemigqa ephindaphindiwe eseduze, ukuze kungabikho imigqa yokuphumayo ephindaphindiwe. Ngokukhetha, ingaphrinta imigqa eyimpinda kuphela.
Ngingawasusa kanjani amarekhodi ayimpinda?
Ukuze ususe amanani ayimpinda, chofoza Idatha > Amathuluzi Edatha > Susa Izimpinda. Ukugqamisa amanani ahlukile noma ayimpinda, sebenzisa umyalo Wokufometha Okunemibandela eqenjini leSitayela kuthebhu ethi Ikhaya.
Ngizikhipha kanjani izimpinda kufayela le-CSV ku-Unix?
Susa okufakiwe okuyimpinda kufayela le-CSV
- sort -u myfile.csv > tmp.csv ; mv -f tmp.csv myfile.csv – Archemar Mar 12 '15 ngo-9:02.
- ngokohlobo lomuntu , awukwazi ukuhlunga “endaweni”. – Archemar Mar 12 '15 ngo-9:03.
- Ungazama futhi ukunganciki kutheminali.
Ngiyithola kanjani imigqa eyimpinda ku-Unix?
Ungawathola kanjani amarekhodi ayimpinda wefayela ku-Linux?
- Kusetshenziswa ukuhlunga kanye ne-uniq: $ hlunga ifayela | uniq -d Linux. …
- awk indlela yokulanda imigqa eyimpinda: $ awk '{a[$0]++}END{for (i in a)uma (a[i]>1)phrinta i;}' ifayela le-Linux. …
- Ukusebenzisa i-perl way:…
- Enye indlela ehlukile:…
- Umbhalo wegobolondo wokulanda / ukuthola amarekhodi ayimpinda:
Uyini umphumela womyalo kabani?
Incazelo: ubani owayala ukuphuma imininingwane yabasebenzisi okwamanje abangene ngemvume ohlelweni. Okukhiphayo kuhlanganisa igama lomsebenzisi, igama letheminali (angena kulo), usuku kanye nesikhathi sokungena kwabo njll. 11.
Ngiyiqeda kanjani imigqa eyimpinda ku-SQL?
I-SQL isusa imigqa eyimpinda isebenzisa i-Common Table Expressions (CTE)
- NGE-CTE([isibongo],
- AS (KHETHA [isibongo],
- ROW_NUMBER() PHEZULU(INGXENYE NGE-[isibongo],
- UKUHLELA NGE-id) NJENGOBA I-DuplicateCount.
- KUSUKA [IsampulaDB].[ dbo].[ isisebenzi])
Imuphi umyalo osetshenziselwa ukucindezela amarekhodi ayimpinda?
Umyalo we-Uniq kuyasiza ukususa noma ukuthola okufakiwe okuyimpinda kufayela.
Ngizikhipha kanjani izimpinda embuzweni okhethiwe?
Isixazululo sokuya kusixazululo sokususa imigqa eyimpinda kumasethi wakho wemiphumela wukufaka phakathi igama elingukhiye elihlukile esitatimendeni sakho osikhethile. Itshela injini yombuzo ukuthi isuse izimpinda ukuze ikhiqize isethi yomphumela lapho umugqa ngamunye uhlukile. Iqembu ngesigatshana lingasetshenziswa futhi ukususa izimpinda.
Ngisusa kanjani izimpinda ku-awk?
Ukuze ususe imigqa eyimpinda egcina ukuhleleka kwayo ekusebenziseni ifayela:
- awk '!uvakashele[$0]++' your_file > deduplicated_file.
- { }
- awu!'! …
- awu!'! …
- $ cat test.txt AAABBBAACCBBA $ uniq < test.txt ABACB A.
- hlunga -u your_file > sorted_deduplicated_file.
Ngibala kanjani imigqa eyimpinda ku-Linux?
Umyalo we-uniq ku-UNIX iyinsiza yomugqa womyalo wokubika noma wokuhlunga imigqa ephindaphindiwe efayeleni. Ingasusa izimpinda, ibonise isibalo sezenzeko, ibonise imigqa ephindaphindiwe kuphela, izibe izinhlamvu ezithile futhi iqhathanise ezinkambini ezithile.
Zingaki izinhlobo zezimvume ifayela elinazo ku-Unix?
Incazelo: Kusistimu ye-UNIX, ifayela lingaba izinhlobo ezintathu yezimvume -funda, bhala futhi wenze.