awk yog feem ntau siv tau thaum tuav cov ntawv nyeem uas tau formatted hauv txoj kev kwv yeesPiv txwv li, nws zoo heev ntawm kev txheeb xyuas thiab tswj cov ntaub ntawv tabular. Nws ua haujlwm ntawm kab-los-kab hauv paus thiab rov ua dua los ntawm tag nrho cov ntaub ntawv. Los ntawm lub neej ntawd, nws siv qhov chaw dawb (chaw, tabs, thiab lwm yam) los cais cov teb.
awk pab tau dab tsi?
Awk yog hom lus sau siv rau kev tswj cov ntaub ntawv thiab tsim cov ntawv ceeb toom … Awk feem ntau yog siv rau kev luam theej duab thiab ua tiav. Nws tshawb nrhiav ib lossis ntau cov ntaub ntawv kom pom tias lawv muaj cov kab uas phim nrog cov qauv uas tau teev tseg thiab tom qab ntawd ua cov haujlwm cuam tshuam.
Kuv yuav tsum siv awk lossis sed?
Xaus: Siv sed rau kev txheeb xyuas cov ntawv yooj yim heev. Tsis tas li ntawd xwb, awk is better. Qhov tseeb, koj tuaj yeem ditch sed tag nrho thiab tsuas yog siv awk. Txij li thaum lawv txoj haujlwm sib tshooj thiab awk tuaj yeem ua tau ntau dua, tsuas yog siv awk.
Thaum twg siv SED vs awk vs grep?
Grep yog ib qho cuab yeej yooj yim siv los tshawb nrhiav cov qauv sib xws tab sis awk yog ntau hom lus programming uas ua cov ntaub ntawv thiab tsim cov khoom tso tawm raws li qhov muaj nuj nqis nkag. Sed hais kom ua yog feem ntau muaj txiaj ntsig rau kev hloov kho cov ntaub ntawv Nws tshawb nrhiav cov qauv sib xws thiab hloov lawv thiab tso tawm qhov tshwm sim.
Qhov txawv ntawm awk thiab grep yog dab tsi?
Nyob deb ntawm qhov sib txawv tseem ceeb tshaj plaws ntawm grep thiab awk wrt txuam regexps yog tias grep tshawb nrhiav tag nrho cov kab rau ib txoj hlua sib xws thaum awk tuaj yeem tshawb nrhiav cov teb tshwj xeeb thiab yog li muab ntau qhov tseeb thiab tsawg dua qhov sib tw cuav.
