Taw qhia
Qhov kev hais kom ua nyob rau hauv Linux tso cai rau koj siv cov ntaub ntawv teev cov ntaub ntawv thiab tso tawm qhov tso tawm rau tus txheej txheem tso tawm, feem ntau qhov no yog qhov kev tshuaj ntsuam.
Ib qho ntawm feem ntau siv cov miv yog los tso saib cov ntaub ntawv rau qhov kev tshuaj ntsuam thiab tseem yuav tsim ib cov ntaub ntawv ntawm tus yoov thiab cia yooj yim editing ncaj ntawm lub davhlau ya nyob twg .
Yuav Ua Li Cas Tsim Ib Daim Ntawv Thov Siv Cat
Txhawm rau tsim ib cov ntaub ntawv siv qhov hais kom ua miv sau hauv qab no hauv qhov chaw davhlau ya nyob twg:
cat>
Obviously, koj yuav tsum hloov
Thaum koj tsim ib cov ntaub ntawv raws li no tus cursor yuav tau sab laug ntawm ib txoj kab tshiab thiab koj tuaj yeem pib ntaus ntawv.
Qhov no yog ib txoj hauv kev zoo kom pib tawm ntawm cov ntaub ntawv lossis los tsim cov ntawv xeem cov ntaub ntawv xws li ib qho tawm ntawm cov ntaub ntawv lossis cov yeeb nkab uas xa tawm.
Los xaus editing ntawv xovxwm CTRL thiab D.
Koj tuaj yeem sim seb qhov txheej txheem ua haujlwm los ntawm kev sau cov ls hais kom ua :
ls -lt
Qhov no teev tag nrho cov ntaub ntawv hauv daim nplaub tshev tam sim no thiab koj yuav tsum pom koj cov ntaub ntawv tshiab thiab qhov loj yuav tsum ntau dua zero.
Yuav Ua Li Cas Tso Tau Zaub Ib Hloov Ntaub Ntawv
Cov lus hais kom ua siv tau los tso saib tau cov ntaub ntawv rau qhov kev tshuaj ntsuam. Txhua yam koj yuav tsum tau ua yog tshem tawm qhov ntau dua cov cim raws li hauv qab no:
miv
Yog tias cov ntaub ntawv ntev heev ces nws yuav pib muab qhov screen sai heev.
Txhawm rau saib cov nplooj ntawv phab ntawm nplooj ntawv siv cov lus qhia ntau ntxiv :
miv
| ntau dua
Xwb, koj siv tau cov lus txib tsawg dua li:
miv
| tsawg dua
Los ntsuam xyuas hom no tawm hauv cov lus txib nram qab no:
miv / yam / passwd | ntau dua
Ntawm chav kawm, koj yuav cia li tsis nco qab txog cov miv zoo rau nws thiab ntaus cov hauv qab no:
tsawg / etc / passwd
Yuav ua li cas Qhia Kab N °
Rau tag nrho cov kab uas tsis yog npliag rau hauv cov ntaub ntawv koj siv tau cov lus txib nram qab no:
miv -b
Yog tias muaj cov kab uas tsis muaj cim rau txhua tus lawv yuav tsis raug suav. Yog tias koj xav muab cov naj npawb rau tag nrho cov kab txawm hais tias lawv tsis muaj dab tsi, ntaus nqe lus nram qab no:
miv -n
Yuav Qhia Tshwm Sim Ntawm Txhua Kab
Qee lub sij hawm thaum parsing cov ntaub ntawv cov ntaub ntawv cov neeg tsim tawm yuav tuaj nyob thoob plaws qhov teeb meem vim tias muaj cov cim thaum tom kawg ntawm cov kab uas lawv tsis xav tau xws li chaw. Qhov no tiv thaiv lawv cov parsers los ntawm kev ua haujlwm kom raug.
Qhov no tsuas yog vim li cas thiaj pom qhov kawg ntawm cov kab cim kab kom koj pom tau tias muaj cov cim tseem ceeb.
Qhia cov nyiaj raws li qhov kawg ntawm kab cim nkag mus rau cov lus qhia nram no:
miv -E
Ua ib qho piv txwv saib cov kab ntawv hauv qab no
tus miv zaum saum daim lev
Thaum koj khiav qhov no nrog tus miv-E hais kom koj yuav tau txais cov zis nram qab no:
tus miv zaum ntawm tus lev $
Txo Cov Kab Lia Loj
Thaum koj tab tom pom cov ntsiab lus ntawm cov ntaub ntawv uas siv cov lus hais ntawm miv koj zaum tsis xav pom thaum twg muaj cov ntiv taw xo sib law liag.
Cov lus txib nram qab no qhia tau hais tias yuav ua li cas thiaj li txo cov zis thiaj li rov ua dua cov kab nrawm.
Kom paub meej txog qhov no yuav tsis zais cov kab lus tsis muaj dab tsi tab sis yog tias koj muaj 4 kab dawb nyob rau hauv kab nws yuav tsuas qhia 1 dawb paug kab.
cat -s
Yuav Qhia Li Cas Tabs
Yog tias koj tab tom tso tawm cov ntaub ntawv uas muaj cov kab zauv rau koj tab sis koj tsis tuaj yeem pom cov tabs.
Cov lus qhia nram qab no qhia tau hais tias ^ Kuv hloov lub tab uas ua rau nws yooj yim pom lawv piv txwv tias yog koj cov ntaub ntawv tsis muaj ^ kuv nyob hauv nws lawm.
miv -T
Concatenate Ntau Cov Ntaub Ntawv
Qhov tseem point ntawm miv yog concatenation ces koj yuav xav paub yuav ua li cas los qhia ntau cov ntaub ntawv ib zaug:
Koj ua tau concatenate ntau cov ntaub ntawv rau qhov kev ntsuam xyuas nrog cov lus txib nram qab no:
miv
Yog tias koj xav tau cov ntaub ntawv teev cov ntsiab lus thiab tsim ib cov ntaub ntawv tshiab siv cov lus txib nram qab no:
miv
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Qhia Cov Ntaub Ntawv Hauv Cov Npe Them Rov Qab
Koj tuaj yeem muab ib cov ntaub ntawv rau hauv qhov kev txiav txim rov qab los ntawm kev siv cov lus txib nram qab no:
tac
Lus hauv no teb Ok, ces technically no tsis yog qhov hais kom ua miv, nws yog tus ua raws li kev ua haujlwm tab sis nws yeej tseem zoo li qub tab sis nyob nraud.
Txoj kev xaus
Ntawd yog qhov zoo nkauj npaum li cas rau qhov hais kom ua miv. Nws yog ib qho tseem ceeb rau kev tsim cov ntaub ntawv ntawm tus yoov thiab kev tso cov zis ntawm cov ntaub ntawv thiab tau kawg, koj tuaj yeem siv nws los koom ntau cov ntaub ntawv ua ke.