Ukuze uthole isikhathi sokugcina sanoma yimuphi umyalo, qala ukuloga okukhiphayo kwetheminali. Lesi sici sitholakala kalula kuma-emulator avamile wetheminali (ngisebenzisa i-Terminator[1] ). Ngemuva kwalokho ungenza i-grep kufayela lokungena ukuze uthole isikhathi sokwenza somyalo owuthandayo.
Uhlola kanjani ukuthi kwagcina nini ukubulawa ku-Linux?
Ku-Linux, kunomyalo owusizo kakhulu wokukubonisa yonke imiyalo yokugcina esanda kusetshenziswa. Umyalo ubizwa nje ngokuthi umlando, kodwa futhi ungafinyelelwa ngokubheka . bash_history kufolda yakho yasekhaya. Ngokuzenzakalelayo, umyalo womlando uzokukhombisa imiyalo yokugcina engamakhulu amahlanu oyifakile.
Ungabona kanjani ukuthi umyalo we-Linux wenziwe ngempumelelo?
Ukuhlola umyalo Kuphumelele
- $ sudo apt update && sudo apt upgrade -y.
- $ echo $?
- $ echo $?
- #!/umgqomo/bash. uma [$? -eq 0 ]; bese. echo OK. okunye. echo FAIL. fi.
- $ chmod +x demo.sh.
- $ ./demo.sh.
- $ && echo IMPUMELELO || echo FAIL.
- $ sudo apt update && echo IMPUMELELO || echo FAIL.
Ngiwuthola kanjani umyalo owenziwe ngaphambilini ku-Linux?
Okulandelayo izindlela ezi-4 ezihlukene zokuphinda umyalo wokugcina okhishiwe.
- Sebenzisa umcibisholo oya phezulu ukuze ubuke umyalo odlule bese ucindezela u-enter ukuze uwenze.
- Thayipha !! bese ucindezela u-enter usuka kulayini womyalo.
- Thayipha !- 1 bese ucindezela u-enter emugqeni womyalo.
- Cindezela okuthi Control+P kuzobonisa umyalo wangaphambilini, cindezela u-enter ukuze uqalise.
11 авг. 2008 g.
Ngazi kanjani uma iskripthi se-Linux siyasebenza?
Bonisa umsebenzi kulokhu okuthunyelwe.
- uma ufuna ukuhlola zonke izinqubo bese usebenzisa 'phezulu'
- uma ufuna ukwazi izinqubo eziqhutshwa yi-java bese usebenzisa i-ps -ef | grep java.
- uma enye inqubo vele usebenzise i-ps -ef | grep xyz noma kalula /etc/init.d xyz isimo.
- uma usebenzisa noma iyiphi ikhodi efana ne-.sh bese ./xyz.sh isimo.
Ugcinwa kuphi umlando ku-Linux?
Umlando ulondolozwe kokuthi ~/. bash_history ifayela ngokuzenzakalelayo. Ungase futhi ugijime 'cat ~/. bash_history' efanayo kodwa ingabandakanyi izinombolo zomugqa noma ukufometha.
I-bash shell iyigcina kuphi imiyalo esanda kwenziwa?
Esinye sezici ezinhle kakhulu ze-Bash umlando womyalo, ogcina yonke imiyalo eyenziwa umsebenzisi, kufayela lomlando ngaphakathi kwencwadi yakhe yasekhaya (ngokuvamile /home/$USER/. bash_history). Lokhu kuvumela umsebenzisi ukuthi akhumbule kalula, ahlele futhi asebenzise imiyalo yangaphambilini.
Ngiyibheka kanjani i-bash?
Ukuthola inguqulo yami ye-bash, sebenzisa noma yimuphi umyalo olandelayo:
- Thola inguqulo ye-bash engiyisebenzisayo, thayipha: echo “${BASH_VERSION}”
- Bheka inguqulo yami ye-bash ku-Linux ngokuqalisa: bash -version.
- Ukuze ubonise inguqulo ye-bash shell cindezela u-Ctrl + x Ctrl + v.
UJan 2. 2021
Yini i-$? Ku-bash script?
$? -Isimo sokuphuma somyalo wokugcina owenziwe. $0 -Igama lefayela lombhalo wamanje. $# -Inani lama-agumenti anikezwe iskripthi. $$ -Inombolo yenqubo yegobolondo lamanje.
Ngazi kanjani ukuthi i-wget yami iphumelele?
Bheka isigaba esithi "Phuma esimweni" se-man wget. Ikhodi yokubuyisela yomyalo osetshenziswe ukulanda ifayela izokutshela ukuthi umyalo wenziwe ngempumelelo noma cha.
Ungaya kanjani ekugcineni komugqa ku-Linux?
Sebenzisa izinqamuleli ezilandelayo ukuze uhambise ngokushesha ikhesa emugqeni wamanje ngenkathi uthayipha umyalo.
- Ctrl+A noma Ikhaya: Iya ekuqaleni komugqa.
- Ctrl+E noma End: Hamba uye ekupheleni komugqa.
- I-Alt+B: Iya kwesokunxele (emuva) igama elilodwa.
- Ctrl+B: Iya kwesokunxele (emuva) uhlamvu olulodwa.
- Alt+F: Iya kwesokudla (phambili) igama elilodwa.
17 Mashi 2017 g.
Wenzani umlando ku-Linux?
Umyalo womlando unikeza nje uhlu lwemiyalo esetshenziswe ngaphambilini. Yilokho kuphela okulondolozwe kufayela lomlando. Kubasebenzisi be-bash, lolu lwazi lonke lufakwa kufayela le-. bash_history ifayela; kwamanye amagobolondo, kungase kube nje.
Ungasho kanjani ukuthi umyalo wokugcina uphumelele ku-Unix?
Ukuze wazi isimo sokuphuma somyalo wokugcina, sebenzisa umyalo onikezwe ngezansi. echo $? Uzothola okukhiphayo ngenani eliphelele. Uma okukhiphayo kungu-ZERO ( 0 ), kusho ukuthi umyalo usetshenziswe ngempumelelo.
Uhlola kanjani ukuthi iskripthi se-bash sesivele sisebenza?
Indlela elula yokuhlola inqubo eseyenziwe kakade umyalo we-pidof. Kungenjalo, yenza iskripthi sakho sidale ifayela le-PID lapho sisebenza. Bese kuwumsebenzi olula wokuhlola ubukhona befayela le-PID ukuze unqume ukuthi ngabe inqubo isivele iyasebenza. #!/bin/bash # abc.sh mypidfile=/var/run/abc.
Ngazi kanjani uma inqubo ibulawa ku-Unix?
Ukuqinisekisa ukuthi inqubo ibulewe, sebenzisa umyalo we-pidof futhi ngeke ukwazi ukubuka i-PID. Esibonelweni esingenhla, inombolo engu-9 iyinombolo yesiginali ye-SIGKILL.
Ngisicinga kanjani iskripthi ku-Linux?
Izimpendulo ze-2
- Sebenzisa umyalo wokutholela yona ekhaya lakho: thola ~ -name script.sh.
- Uma ungatholanga lutho ngalokhu ngenhla, sebenzisa umyalo wokuthola kukho kuyo yonke i-F/S: thola / -name script.sh 2>/dev/null. ( 2>/dev/null izogwema amaphutha angadingekile ukuthi aboniswe) .
- Yethula:/ /script.sh.
Februwari 22 2017