Ngati muphatikiza zilembo zapadera pamachitidwe otayidwa pamzere wolamula, zithawani pozitsekera m'mawu amodzi kuti mupewe kutanthauzira molakwika ndi chipolopolo kapena womasulira. Kuti mufanane ndi munthu wapadera ndi grep -E, ikani kumbuyo ( ) kutsogolo kwa munthu.
Kodi ndimapanga bwanji munthu ku Unix?
Mwachitsanzo, grep amagwiritsa ntchito chizindikiro cha dollar monga khalidwe lapadera lofanana ndi mapeto a mzere - kotero ngati mukufunadi kufufuza chizindikiro cha dola, muyenera kutsogolere ndi kubwerera kumbuyo (ndikuphatikizirani chingwe chonse chofufuzira muzolemba imodzi). Koma fgrep imakupatsani mwayi wongolemba chizindikiro cha dola.
Kodi ndimagwiritsa ntchito bwanji grep kupeza chizindikiro?
4.1 Kusaka Mapangidwe ndi grep
- Kuti mufufuze chingwe chamtundu wina mufayilo, gwiritsani ntchito lamulo la grep. …
- grep ndizovuta; ndiye kuti, muyenera kufananiza ndi zilembo zazikulu ndi zazing'ono:
- Dziwani kuti grep idalephera kuyesa koyamba chifukwa palibe chomwe chidayamba ndi zilembo zazing'ono "a."
Kodi ndimayika bwanji dontho ku Linux?
mu grep, a madontho adzafanana ndi munthu aliyense kupatula kubwerera. Koma bwanji ngati mukungofuna kufanana ndi kadontho kwenikweni? Ngati muthawa kadontho: ".", idzangofanana ndi kadontho kena m'mawu anu.
Kodi ndimapanga bwanji zingwe zapadera ku Linux?
yankho;
- Kugwiritsa ntchito grep ndi mutu command. Phatikizani zotuluka za grep command to head command kuti mupeze mzere woyamba. …
- Kugwiritsa ntchito m njira ya grep command. Njira ya m itha kugwiritsidwa ntchito kuwonetsa kuchuluka kwa mizere yofananira. …
- Kugwiritsa ntchito sed command. Titha kugwiritsanso ntchito sed command kusindikiza zochitika zapadera zapateni. …
- Kugwiritsa ntchito awk command.
Kodi mumalemba bwanji zilembo zapadera mu Unix?
About Unix muyezo makiyi ambiri thandizo
Ngati chilembo sichikupezeka pa kiyibodi, mutha kuyika zilembozo kukanikiza batani lapadera la Compose ndikutsatizana ndi makiyi ena awiri. Onani tebulo ili m'munsili la makiyi omwe amagwiritsidwa ntchito poika zilembo zosiyanasiyana. Dziwani kuti ku Amaya mutha kusintha dongosolo la makiyi awiriwo.
Kodi zotsatira za lamulo la ndani?
Kufotokozera: ndani amalamula zotuluka tsatanetsatane wa ogwiritsa ntchito omwe adalowa mudongosolo. Zomwe zimatuluka zikuphatikiza dzina lolowera, dzina la terminal (lomwe adalowamo), tsiku ndi nthawi yolowera ndi zina. 11.
Ndi zosankha ziti zomwe zingagwiritsidwe ntchito ndi grep command?
Lamulo la grep limathandizira zosankha zingapo pakuwongolera kowonjezera pakufananiza:
- -i: amafufuza mopanda chidwi.
- -n: imasonyeza mizere yomwe ili ndi chitsanzo pamodzi ndi manambala a mzere.
- -v: ikuwonetsa mizere yopanda mawonekedwe omwe atchulidwa.
- -c: ikuwonetsa kuchuluka kwamitundu yofananira.
Kodi zotsatira za wc ndi chiyani?
wc imayimira chiwerengero cha mawu. Monga momwe dzinalo likusonyezera, amagwiritsidwa ntchito makamaka powerengera. Amagwiritsidwa ntchito kuti adziwe kuchuluka kwa mizere, kuchuluka kwa mawu, byte ndi zilembo zowerengera m'mafayilo omwe afotokozedwa muzokangana zamafayilo. M'malo mwake, imawonekera kutulutsa kwamagulu anayi.
Kodi tanthauzo la grep ndi chiyani?
grep ndi zogwiritsa ntchito pamzere wolamula posaka ma seti a mawu osavuta a mizere yomwe imagwirizana ndi mawu okhazikika. Dzina lake limachokera ku lamulo la ed g/re/p (padziko lonse fufuzani mawu okhazikika ndi kusindikiza mizere yofananira), yomwe imakhala ndi zotsatira zofanana.