Cov txheej txheem:
Video: Yuav ua li cas koj sau plhaub commands?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2024-01-18 08:24
Shell Scripting yog dab tsi?
- Tsim cov ntaub ntawv siv vi editor (lossis lwm tus editor). Lub npe tsab ntawv cov ntaub ntawv nrog extension.sh.
- Pib lub tsab ntawv nrog #! /bin/sh.
- Sau qee kod.
- Txuag tus tsab ntawv ua filename.sh.
- Rau executing lub tsab ntawv hom bash filename.sh.
Dhau li ntawm no, dab tsi yog hauv plhaub hais kom ua?
Basic Plhaub Commands hauv Linux. A plhaub yog ib qho kev pabcuam tshwj xeeb uas muab kev pabcuam rau cov neeg siv los siv cov kev pabcuam kev ua haujlwm. Nws yog ib lus txib tus neeg txhais lus uas ua haujlwm lus txib nyeem los ntawm cov khoom siv nkag xws li cov keyboards lossis los ntawm cov ntaub ntawv.
$1 thiab $2 yog dab tsi hauv plhaub ntawv? Lwm cov lus teb yog txoj cai uas feem ntau siv rau lawv yog xa mus rau lus txib - kab lus sib cav rau lub tsab ntawv : $1 = thawj qhov kev sib cav, $2 = thib ob, thiab lwm yam. Raws li kev thov, lawv sib raug rau C / C ++ argv cov ntsiab lus: $1 = argv[1], $2 = argv[2], etc: C - Hais kom ua Kab lus sib cav.
Ib yam li ntawd, kuv yuav ua li cas khiav lub plhaub ntawv hauv Linux?
Cov txheej txheem khiav.sh file plhaub tsab ntawv ntawm Linux yog raws li hauv qab no:
- Teeb tsa kev tso cai ntawm koj tsab ntawv: chmod +x script-name-here.sh.
- Txhawm rau khiav koj tsab ntawv, sau:./script-name-here.sh. sh script-name-here.sh. bash script-name-here.sh.
$ yog dab tsi? Hauv plhaub scripting?
$# Khaws cov naj npawb ntawm cov kab lus sib cav uas tau dhau mus rau plhaub qhov kev pab cuam. $? Khaws tus nqi tawm ntawm cov lus txib kawg uas tau ua tiav. $0 Khaws thawj lo lus ntawm cov lus txib nkag (lub npe ntawm plhaub program). Yog li qhov yooj yim, $ # yog ntau qhov kev sib cav muab thaum koj tsab ntawv raug tua.
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