Cov txheej txheem:
Video: Dab tsi yog qhov chaw hauv bash tsab ntawv?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Lub hauv paus lus txib nyeem thiab ua tiav cov lus txib los ntawm cov ntaub ntawv teev tseg raws li nws qhov kev sib cav hauv lub plhaub puag ncig tam sim no. Nws yog qhov tsim nyog los thauj cov haujlwm, hloov pauv thiab teeb tsa cov ntaub ntawv nyob rau hauv lub plhaub scripts. qhov chaw yog lub plhaub tsim hauv Bash thiab lwm cov plhaub nrov siv hauv Linux thiab UNIX kev khiav haujlwm tshuab.
Tom qab ntawd, dab tsi yog qhov chaw hauv plhaub ntawv?
qhov chaw yog a plhaub built-in lus txib uas yog siv los nyeem thiab ua tiav cov ntsiab lus ntawm cov ntaub ntawv (feem ntau cov lus txib), dhau los ua kev sib cav hauv qhov tam sim no plhaub ntawv . Yog tias muaj kev sib cav tau muab, lawv dhau los ua qhov tsis sib xws thaum filename raug tua.
Ib yam li ntawd, qhov chaw ~ / Bash_profile ua dab tsi? bash_profile tiv thaiv cov khoom ntawm ~/ . profile, uas yog cov ntaub ntawv nyiam siv rau kev nkag mus hauv plhaub hauv bash configuration rau Ubuntu. bashrc kev yog nyeem los ntawm non-login sib tham sib plhaub, thiab yog muaj nyob rau hauv ~/ . profile, kom nws cov ntsiab lus yog kuj muaj nyob rau hauv login shells.
Tsis tas li ntawd, kev nrhiav ib tsab ntawv txhais li cas?
Luv teb Kev muab ib tsab ntawv yuav khiav cov lus txib hauv cov txheej txheem plhaub tam sim no. Kev ua haujlwm a tsab ntawv yuav khiav cov lus txib hauv cov txheej txheem plhaub tshiab. Siv qhov chaw yog tias koj xav tau tsab ntawv hloov ib puag ncig hauv koj lub plhaub uas tam sim no khiav.
Koj tsim cov ntaub ntawv hauv Linux li cas?
Yuav ua li cas los tsim cov ntawv nyeem ntawm Linux:
- Siv kov los tsim cov ntawv nyeem: $ kov NewFile.txt.
- Siv miv los tsim cov ntaub ntawv tshiab: $ cat NewFile.txt.
- Tsuas yog siv> los tsim cov ntawv nyeem: $> NewFile.txt.
- Thaum kawg, peb tuaj yeem siv cov ntawv sau npe thiab tom qab ntawd tsim cov ntaub ntawv, xws li:
Pom zoo:
$ yog dab tsi? Hauv bash tsab ntawv?
$? -Txoj kev tawm ntawm cov lus txib kawg ua tiav. $0 -Cov ntaub ntawv npe ntawm tsab ntawv tam sim no. $# -Tus naj npawb ntawm cov lus sib cav muab rau ib tsab ntawv. Rau lub plhaub scripts, qhov no yog tus txheej txheem ID nyob rau hauv uas lawv tab tom ua
Qhov txawv ntawm qhov chaw nyob thiab qhov chaw nyob yog dab tsi?
Qee zaum, 'txoj kev chaw nyob' hais txog koj lub cev qhov chaw nyob ntawm qib zoo dua hauv nroog. Piv txwv li, '1313Mockingbird Lane', tsis muaj lub nroog lub npe txuas nrog. Tab sis yog, feem ntau nws tsuas yog ib daim ntawv rov qab kom paub qhov txawv ntawm qhov chaw xa ntawv (thaum chiv keeb) thiab tam sim no e-mail chaw nyob, chaw nyob hauv web, IPaddress, thiab lwm yam
Qhov chaw nyob ntawm lub cev thiab qhov chaw nyob qhov chaw nyob yog dab tsi?
Qhov sib txawv yooj yim ntawm Logical thiab lub cev chaw nyob yog qhov chaw nyob Logical yog tsim los ntawm CPU hauv kev xav ntawm ib qho kev pab cuam. Ntawm qhov tod tes, qhov chaw nyob ntawm lub cev yog qhov chaw nyob uas muaj nyob hauv lub cim xeeb. Cov txheej txheem ntawm txhua qhov chaw nyob uas tsim los ntawm CPU fora program hu ua Logical Address Space
Qhov txawv ntawm qhov chaw kub thiab qhov chaw txias yog dab tsi?
Thaum lub chaw kub kub yog ib daim qauv ntawm cov chaw khaws ntaub ntawv nrog tag nrho koj cov khoom siv kho vajtse thiab software ua haujlwm nrog koj lub xaib thawj zaug, qhov chaw txias tau muab tshem tawm - tsis muaj server hardware, tsis muaj software, tsis muaj dab tsi. Kuj tseem muaj qhov chaw sov uas nyob nruab nrab ntawm qhov chaw kub thiab qhov chaw txias los ntawm cov khoom siv
Qhov txawv ntawm qhov chaw nyob sib txuas lus thiab qhov chaw nyob ruaj khov yog dab tsi?
Qhov chaw nyob xa ntawv yog chaw nyob sib txuas lus piv txwv li qhov koj nyob tam sim no. & chaw nyob Apermanent yog ntawm koj cov ntaub ntawv yog sau rau ntawm koj daim ntawv pov thawj hnub yug & daim npav pov npav. Qhov chaw nyob ruaj khov & kev sau ntawv yuav zoo ib yam lossis txawv ntawm cov ntaub ntawv siv tau