Cov txheej txheem:
Video: Kuv yuav suav cov kab hauv cov ntaub ntawv li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov cuab yeej wc yog "lo lus counter" hauv UNIX thiab UNIX-zoo li kev khiav haujlwm, koj tuaj yeem siv nws rau suav kab hauv ib cov ntaub ntawv , los ntawm kev ntxiv qhov kev xaiv -l, yog li wc -l foo yuav suav tus lej ntawm kab hauv foo.
Ib yam li ntawd, tib neeg nug, yuav ua li cas kuv suav cov kab hauv cov ntaub ntawv hauv bash?
Siv lub cuab yeej wc
- Txhawm rau suav cov kab: -l wc -l myfile. sh.
- Txhawm rau suav cov lus: -w wc -w myfile. sh.
Ib yam li ntawd, yuav ua li cas koj suav tag nrho cov kab ntawm cov lej hauv ib phau ntawv recursively? Chij -l tuaj yeem siv pom tsuas yog cov lej ntawm kab hauv cov ntaub ntawv.
- wc -l $fileName.
- Yog tias koj xav pom tag nrho cov kab hauv ib phau ntawv (recursively), koj tuaj yeem tau txais cov ntaub ntawv ib tus zuj zus thiab dhau mus rau wc -l.
- $ nrhiav. - npe '*.py' | xag wc l.
- 165./pythonlearning/cov. py.
- 11./pythonlearning/cov. py.
- 176 tag nrho.
Tib neeg kuj nug, Kuv yuav suav cov kab hauv grep li cas?
Qhia cov tus lej ntawm kab uas muaj ib txoj hlua uas phim tus qauv, siv qhov -n (lossis --line- tus lej ) kev xaiv. Thaum siv qhov kev xaiv no, grep ua yuav luam cov ntais ntawv rau cov qauv tso zis ua ntej nrog cov kab tus lej nws tau pom ntawm.
wc command ua dab tsi?
Cov wc (lo lus suav) lus txib hauv Unix / Linux operating systems yog siv los nrhiav cov xov tooj tshiab suav, lo lus suav, byte thiab cov cim suav hauv cov ntaub ntawv teev tseg los ntawm cov lus sib cav.
Pom zoo:
Vim li cas nws tseem ceeb kom suav nrog cov ntaub ntawv hauv kab ntawv thaum xa email?
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Kuv yuav suav cov ntaub ntawv hauv lub rooj hauv SQL Server li cas?
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Kuv yuav ntxig cov ntaub ntawv WAV rau hauv cov ntaub ntawv Word li cas?
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