Esihlokweni esilandelayo sizobheka ezinye izindlela zokusebenzisa umyalo wokubuka. Lo myalo usetshenziselwa ukwenza noma imuphi umyalo wokuphikisana ngezikhathi ezithile, kukhombisa umphumela womyalo oshiwo ewindini lokugcina.. Lokhu kungaba wusizo lapho sidinga ukusebenzisa umyalo kaninginingi futhi sibuke ukushintshwa komyalo ngokuhamba kwesikhathi.
Okusetshenziswayo iwashi liyingxenye yephakeji ye-procps (noma i-procps-ng) efakwe ngaphambili cishe kukho konke ukusatshalaliswa kwe-Gnu / Linux.
Izibonelo eziwusizo zomyalo wokubuka ku-Ubuntu
Sebenzisa insiza ukubukela kungumsebenzi olula futhi oqondile. Landela i-syntax elula futhi azikho izinketho eziyinkimbinkimbi.
watch [opciones] comando
Ukuqeda i-loop noma ukuphinda, ungasebenzisa Ctrl + C ukunqamula isenzo sokubuka, noma umane uvale iwindi lokugcina lapho lisebenza khona.
Ukusetshenziswa okuyisisekelo komyalo wokubuka
Lapho isetshenziswa ngaphandle kwezimpikiswano, le nsiza izokhipha umyalo ocacisiwe njalo ngemizuzwana emibili:
watch date
Lo myalo izophrinta umphumela okhiqizwe ngosuku. Ngaphezulu kwesokunxele kwesikrini kuzobonisa umyalo owenziwayo kanye nesikhathi sokusebenza esisebenzayo.
Cacisa isikhathi sokuvuselela
Sizokwazi ukucacisa isikhathi sokuphumula sokuvuselelwa komyalo wokubuka kalula usebenzisa inketho -n. Isikhawu sesikhathi esisha kufanele sisethwe ngemizuzwana.
watch -n 5 date
Manje umyalo wosuku uzobuyekeza kuphela njalo ngemizuzwana emihlanu.
Gqamisa umehluko phakathi kwesibuyekezo ngasinye
Ukubuka kwenza kube lula ukubona umehluko phakathi kokukhipha okudala nokubuyekeziwe. Singagqamisa lo mehluko sisebenzisa ifayela le- -d inketho.
watch -n 5 -d date
Lo myalo izosebenza usuku njalo ngemizuzwana emihlanu bese igqamisa ushintsho kokukhiphayo esikrinini esibulalayo.
Susa isihloko nezihloko
Umyalo wokubuka ubonisa imininingwane esibukweni njengegama lomyalo owenziwayo, isikhawu nesikhathi samanje. Konke kungaphezulu kwesikrini. Uma sifuna ukukugwema, singasebenzisa i- -t inketho ukukhubaza lolu lwazi.
watch -t date
Njengoba bengisho, lo myalo izokhombisa kuphela umphumela okhiqizwe ngumyalo usuku.
Phuma ekubukeni uma kwenzeka iphutha
Futhi singacacisa i-watchdog ezophuma noma nini lapho kunephutha elikhiqizwa umyalo owenziwayo. Kuzofanele sisebenzise i -e inketho.
watch -e exit 99
Uma usebenzisa lo myalo, uzobona umlayezo obonisa ukuthi umyalo unesimo sokuphuma okungezona uziro. Kumele kucatshangwe ukuthi imiyalo eyenziwayo ngaphandle kwephutha, iphuma ne-zero status code.
Phuma uma izinguquko zenzeka kokukhipha umyalo
La -g inketho iphuma ekubukeni noma kunini lapho kuba khona ushintsho kokukhipha umyalo.
watch -g date
Lo myalo uzosebenza imizuzwana emibili futhi ngokushesha lapho umkhiqizo uvuselelwa, iwashi lizovala.
Yazisa uma kwenzeka iphutha
La -b inketho Ukubuka ama-beeps njalo lapho umyalo uphuma ngekhodi engeyona zero. Njengoba sekushiwo, ikhodi yesimo engeyona zero imvamisa ikhombisa iphutha noma ukuthi ukwenziwa komyalo kwehlulekile.
watch -b exit 99
Humusha amakhodi ombala nokulandelana kwesitayela
Singakwazi vumela ukuhunyushwa kwamakhodi we Umbala we-ANSI nokulandelana kwesitayela kwewashi usebenzisa i- -c inketho. Ngokuzenzakalelayo, iwashi alihumushi imibala kokukhiphayo kwayo.
watch -c echo "$(tput setaf 2) Ejemplo para Ubunlog"
Ukukhishwa kwalo myalo kukhombisa intambo efakiwe eluhlaza 'Isibonelo se- Ubunlog'. Uma sisusa inketho -c bese siqhuba umyalo futhi, sizobona ukuthi intambo ayiqukethe umbala kulesi sikhathi.
Bheka izinguquko kokuqukethwe kwesiqondisi
Isibonelo esilandelayo sikhombisa ukuthi singalusebenzisa kanjani usizo lwewashi ku- qapha izinkomba zohlelo lwefayela ngezinguquko zokuqukethwe.
watch -d ls -l
Lo myalo uzophrinta uhlu lwemibhalo bese uqokomisa ushintsho lokuqukethwe.
Gada izinga lokushisa le-CPU usebenzisa iwashi
Uma usebenzisa imishini eshisayo, kubalulekile ukuqapha izinga lokushisa. Sizokwazi sebenzisa insiza yokubuka kanye izinzwa ukulawula ukushisa kwemishini.
watch -n 60 sensors
Lo myalo izohlola izinga lokushisa kwemishini ngomzuzu.
Khombisa ikhasi losizo nencwajana
Ungangabazi bona usizo lomyalo wokubuka uma ufuna imininingwane esheshayo ngenketho ethile.
watch -h
Sizokwazi futhi hlola ikhasi lezandla ukuthola imininingwane enemininingwane ngenketho ethile.
man watch
Njengoba ubonile, umyalo wokubuka uyithuluzi elilula kodwa eliwusizo, okuyi Inamacala amaningi wokusetshenziswa, okungewona wonke lawo akhonjisiwe kule ndatshana.