Ukutshatisa uphawu olukhethekileyo kwi-grep –E, beka umva ( ) phambi komlinganiswa. Ngokuqhelekileyo kulula ukusebenzisa i-grep –F xa ungadingi ipatheni eyodwa ehambelanayo.
Ndibafumana njani abalinganiswa abakhethekileyo kwi-Unix?
1 Impendulo. indoda ukubamba : -v, -invert-match Guqula ingqiqo yokuthelekisa, ukukhetha imigca engahambelaniyo. -n, -line-inombolo Isimaphambili somgca ngamnye wemveliso kunye nenombolo yomgca we-1 ngaphakathi kwefayile yegalelo layo.
Ngaba umlinganiswa okhethekileyo kwigrep?
I-Grep inokuchonga imigca yokubhaliweyo kuyo kwaye igqibe ngokubhekele phaya ukusebenzisa iintshukumo ezahlukeneyo ezibandakanya umsebenzi ophindaphindayo okanye ukuguqula uphendlo kunye nokubonisa inombolo yomgca njengemveliso njl.njl. amabinzana aqhelekileyo asetyenziswa kwimiyalelo ukwenza iintshukumo ezininzi njenge #, %, *, &, $, @, njl.
Ndibafumana njani abalinganiswa abakhethekileyo kwiLinux?
Ndibafumana njani abalinganiswa be-Ctrl-M kwiLinux? grep umyalelo ikuvumela ukuba ukhangele umtya kwifayile. Ke baleka grep ^M ukufumana kwaye ubonise wonke umgca apho lo mlinganiswa akhoyo. Ukuchwetheza “^M” - cofa u-Ctrl+V kunye no-Ctrl+M oko kukuthi, ungabamba iqhosha le-CTRL kwaye ucinezele u-V no-M ngokulandelelanayo.
Ndiyisebenzisa njani i-grep ukufumana isimboli?
4.1 Ukukhangela iipateni ngegrep
- Ukukhangela umtya othile kwifayile, sebenzisa umyalelo we-grep. …
- I-grep inovelwano lwemeko; oko kukuthi, kufuneka utshatise ipateni ngokubhekisele konobumba abakhulu nabancinci:
- Qaphela ukuba i-grep ayiphumelelanga kumzamo wokuqala kuba akukho namnye kumangeno oqale ngonobumba omncinci “a.”
Ngabaphi abalinganiswa abakhethekileyo kwiLinux?
Abalinganiswa <, >, |, kunye & yimizekelo emine yabalinganiswa abakhethekileyo abaneentsingiselo ezithile kwiqokobhe. Amakhadi asendle esiwabonile ngaphambili kwesi sahluko (*, ?, kunye […]) nawo angabadlali abakhethekileyo. Itheyibhile 1.6 inika iintsingiselo zazo zonke iimpawu ezikhethekileyo ngaphakathi kwemigca yomyalelo weqokobhe kuphela.
Ndibafumana njani abalinganiswa abakhethekileyo kwifayile yokubhaliweyo?
Ukukhangela Abalinganiswa Abakhethekileyo
- Cofa u-Ctrl+F. Igama libonisa i Fumana isithuba se Fumana kwaye Faka endaweni yebhokisi yencoko yababini.
- Cofa iqhosha elingakumbi, ukuba liyafumaneka. (Jonga uMfanekiso 1.)
- Kwibhokisi ethi Fumana Yintoni, ngenisa umbhalo ofuna ukuwuphendla. …
- Seta ezinye iiparamitha zokukhangela, njengoko unqwenela.
- Cofa kwindawo ethi Fumana Okulandelayo.
Ngaba i-grep iyayixhasa i-regex?
Grep Ukuchazwa rhoqo
Intetho eqhelekileyo okanye i-regex yipatheni ehambelana neseti yeentambo. … GNU I-grep ixhasa ii-syntaxes ezintathu eziqhelekileyo zokubonisa, iSiseko, Esongeziweyo, kunye ne-Perl-ehambelanayo. Kweyona ndlela ilula, xa kungekho didi lwentetho lunikwayo, i-grep itolika iipateni zophendlo njengentetha eqhelekileyo eqhelekileyo.
Ndibafumana njani abalinganiswa abakhethekileyo kwi-vi?
Ukufumana umtya womlinganiswa
Ukufumana umtya womlinganiswa, chwetheza / ulandelwe ngumtya ofuna ukuwukhangela, uze ucofe uBuyela. vi ibeka ikhesa kwisenzeko esilandelayo somtya. Umzekelo, ukufumana umtya othi “meta,” chwetheza/meta elandelwa nguBuyisa.
Ithetha ukuthini i-backslash kwi-grep?
\ umva. Sebenzisa u-r ukutshatisa ikhefu lomgca embindini wepateni kunye neempawu ezikhethekileyo ^ kunye ne-$ (echazwe ngasentla) "i-ankile" ipateni ekuqaleni komgca okanye ekupheleni komgca. Kwimeko ye ^ kunye ne-$, umlingiswa wokuqhawula umgca awufakwanga kumdlalo. Ezinye iiklasi zabalinganiswa abaKhethekileyo.
Yintoni injongo yeUnix?
Unix yinkqubo yokusebenza. Yona ixhasa ukwenza izinto ezininzi kunye nokusebenza kwabasebenzisi abaninzi. I-Unix isetyenziswa kakhulu kuzo zonke iintlobo zeenkqubo zekhompuyutha ezifana nedesktop, ilaptop, kunye neeseva. Kwi-Unix, kukho ujongano lomsebenzisi weGraphical olufana neefestile ezixhasa ukukhangela okulula kunye nemeko yenkxaso.
Wenza ntoni i-$@ kwiLinux?
"$@" Igcina zonke iingxoxo ezifakwe kumgca womyalelo, umntu ngamnye ucatshulwe (“$1” “$2” …). Ke ngokwesiseko, $# linani leengxoxo ezinikiweyo xa umbhalo wakho uphunyeziwe. $* ngumtya oqulathe zonke iimpikiswano. Ngokomzekelo, i-$ 1 yingxabano yokuqala kunye nokunye.