2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Gawk muab cov yam ntxwv ntxiv pom nyob rau hauv tam sim no version ntawm Brian Kernighan's awk thiab ib tug xov tooj ntawm GNU tshwj xeeb txuas ntxiv. … Raws li kev ceev, siv gawk li "plain" awk yuav tsum tsis muaj qhov sib txawv- feem ntau, thaum gawk raug teeb tsa, awk yuav tsuas yog ib qho symlink rau gawk uas txhais tau tias lawv yuav ua raws nraim. tib program.
Yog awk tsim nyog kawm xyoo 2020?
AWK yog ib hom ntawv sau nrog keeb kwm ntev tshaj 40 xyoo. Nws muaj tus qauv POSIX, ntau qhov kev coj ua, thiab yog tseem ceeb tsis txaus ntseeg hauv xyoo 2020 - ob qho tib si rau kev ua cov ntawv nyeem yooj yim thiab rau kev sib cav "cov ntaub ntawv loj". Cov lus tau tsim los ntawm Bell Labs xyoo 1977. …
Thaum twg kuv yuav tsum siv awk?
awk feem ntau siv tau thaum tuav cov ntawv nyeem uas tau formatted hauv txoj kev kwv yees. Piv txwv li, nws yog qhov zoo tshaj plaws 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 yog lus zoo?
Mob siab rau databases, faib tshuab thiab ua haujlwm ua haujlwm. Awk yog ib hom lus me me tab sis muaj peev xwm siv tau los ua cov ntawv nyeem. Awk tuaj yeem siv sib tham sib lossis khiav cov kev pabcuam khaws tseg. …
awk zoo rau dab tsi?
Awk yog qhov khoom siv uas ua kom tus programmer sau me me tab sis siv tau zoo hauv daim ntawvnqe lus uas txhais cov qauv ntawv uas yuav tsum tau tshawb nrhiav hauv txhua kab ntawm cov ntaub ntawv thiab qhov yuav tsum tau ua thaum pom qhov sib tw hauv kab. Awk feem ntau yog siv rau cov qauv scanning thiab ua.
Pom zoo:
Kuv yuav tsum siv kev lag luam lossis kev lag luam?
Raws li cov lus qhia qhov txawv ntawm kev lag luam thiab kev lag luam yog kev lag luam yog ua lag luam, lossis qee yam txaus ntshai lossis nyuaj thaum cov lag luam yog (kev lag luam). Kuv yuav tsum siv kev lag luam hauv kuv lub npe lag luam?
Yuav tsum tau siv thiab yuav tsum siv?
'Shall' yog siv rau hauv kev sau ntawv thiab qhia txog lub sijhawm yav tom ntej. 'Yuav tsum' yog siv nyob rau hauv kev sau ntawv feem ntau, thiab raws li yav dhau los tense ntawm 'Yuav tsum'. 'Yuav' yog siv los qhia cov tswv yim thiab kev cai.
Kuv yuav tsum ua kom kuv cov plaub hau daj lossis tsaus?
Nws tau pom zoo tias koj nyob rau hauv ob peb qhov ntxoov ntxoo ntawm koj cov plaub hau ntuj xim, txawm tias koj txiav txim siab mus sib dua lossis tsaus dua. Koj yuav tsum tsis txhob saib ntxuav tawm, thiab sib tov ntawm cov ntsiab lus tseem ceeb thiab cov teeb pom kev zoo tuaj yeem pab ua kom lub ntsej muag muag.
Kuv puas yuav tsum staple lossis daim ntawv clip kuv w2?
Staw ib daim qauv ntawm txhua daim ntawv W-2 rau pem hauv ntej ntawm koj daim ntawv them se yog tias koj xa hauv daim ntawv luam. Cais lawv los ntawm qis tshaj mus rau siab tshaj plaws los ntawm kev siv tus lej txuas nrog yog tias koj yuav tsum xa lwm cov sijhawm thiab nqe lus nrog koj rov qab los.
Kuv yuav tsum rub kuv lub tsho rau hauv lossis tawm?
Ntawm no yog ob peb txoj kev qhia: Cov tsho uas ua los ntawm lub hauv qab lub hauv siab yog txhais tau tias yuav hnav tsis tau. Tab sis yog hais tias lub tsho tau pom "tails" - uas yog hais tias, lub hem txawv nyob rau hauv ntev, es tsis yog nyob rau hauv tag nrho txoj kev - nws yuav tsum nco ntsoov muab tso rau hauv.
