Video: Koj puas tuaj yeem muaj ntau yam yog cov lus hauv PowerShell?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ntau tej yam kev mob nrog lwm ^
Nyob rau hauv cov ntaub ntawv uas ib yog hais tias ntxiv lwm tus ceg tsis txaus, koj tuaj yeem ua ke ntau yam tej yam kev mob. PowerShell muab lwm lo lus tseem ceeb rau lub hom phiaj no. Yog kev soj ntsuam ntawm cov yog xwm txheej tshwm sim hauv FALSE, tag nrho lwm cov xwm txheej yuav raug kuaj tom qab ntawd.
Ib yam li ntawd, nws raug nug, ua li cas koj sau ib nqe lus yog tias muaj ntau yam xwm txheej?
Siv "&&" lossis "||" i.e. logical THIAB lossis logical LOSSIS tus neeg teb xov tooj txuas ob lossis ntau dua tej yam kev mob hauv a yog hais tias . Rau eg; Yog koj xav nrhiav tus lej uas yog faib los ntawm ob qho tib si 5 thiab 7, koj yuav tsum tau siv cov laj thawj THIAB, uas rov qab muaj tseeb xwb yog ob lub tej yam kev mob muaj tseeb….
Qhov thib ob, koj siv thiab hauv PowerShell li cas? Qhov "-AND" yog siv thaum koj xav tau kom paub tseeb tias tag nrho cov xwm txheej tau teev tseg hauv a PowerShell nqe lus/qhia yog TRUE. Thaum "-OR" yog siv thaum koj xav tau kom paub tseeb tias tsuas yog ib qho xwm txheej TRUE tawm ntawm ntau yam xwm txheej tau teev tseg.
Yog li ntawd, kuv yuav ua li cas ntxiv ib nqe lus yog hauv PowerShell?
Ntxiv tus -Tsis txhais tau hais tias qhov opposite yog qhov tseeb yog li tam sim no lwm tsab ntawv thaiv yuav raug khiav thaum peb ua tiav cov cai saum toj no. Txog tam sim no peb tau saib qhov yooj yim Yog / Lwm yam nqe lus qhov twg tsuas yog ib qho tau saib.
PowerShell Basics: Ua haujlwm nrog cov Yog Hais Lus.
| -eq | Sib npaug rau |
|---|---|
| -ge | Ntau dua lossis sib npaug |
| -lt | Tsawg dua |
| -le | Tsawg dua los yog sib npaug |
| -zoo li | Wildcard match |
IF nqe lus hauv PowerShell yog dab tsi?
Thaum twg koj run Yog hais tias , PowerShell ntsuas qhov kev qhia raws li qhov tseeb lossis tsis tseeb. Yog muaj tseeb, < nqe lus lis 1> runs, and PowerShell tawm ntawm Yog hais tias . Yog yog cuav, PowerShell ntsuam xyuas qhov xwm txheej uas tau teev tseg los ntawm lub conditional nqe lus.
Pom zoo:
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