Kwinqaku elilandelayo siza kujonga ezinye zeendlela zokusebenzisa umyalelo wokubukela. Lo myalelo usetyenziselwa ukwenza nawuphi na umyalelo ongenakuphikiswa rhoqo, ukubonisa isiphumo salo myalelo kwi-terminal window.. Oku kunokuba luncedo xa sifuna ukuqhuba umthetho ophindaphindiweyo kwaye sijonge utshintsho lomyalelo ngokuhamba kwexesha.
Into eluncedo ukubukela kuyinxalenye yepropps (okanye i-procps-ng) iphakheji efakwe kwangaphambili phantse kulo lonke unikezelo lweGnu / Linux.
Imizekelo eluncedo yomyalelo wokubukela ku-Ubuntu
Sebenzisa into eluncedo ukubukela ngumsebenzi olula nongqalileyo. Landela syntax elula kwaye akukho zikhetho zinzima.
watch [opciones] comando
Ukuphelisa iluphu okanye ukuphinda, ungasebenzisa Ctrl + C Ukuphelisa isenzo sokubukela, okanye uvale nje i-window apho isebenza khona.
Ukusetyenziswa ngokusisiseko komyalelo wokubukela
Xa isetyenziswa ngaphandle kweempikiswano, oku kuluncedo uya kwenza lo myalelo uchaziweyo rhoqo kwimizuzwana emibini:
watch date
Lo myalelo siya kuprinta iziphumo eziveliswe ngumhla. Isinxele ngasekhohlo kwesikrini siya kubonisa umyalelo ophunyelelwayo kunye nexesha elisebenzayo.
Chaza ixesha lokuhlaziya
Siza kuba nakho ukukhankanya ixesha lokuphumla lokuhlaziywa komyalelo wokubukela ngokulula kakhulu usebenzisa -ukhetho. Ixesha elitsha lokuphumla kufuneka lisetelwe ngemizuzwana.
watch -n 5 date
Ngoku Umhla womyalelo uza kuhlaziya kuphela imizuzwana emihlanu.
Gqamisa umahluko phakathi kohlaziyo ngalunye
Ukubukela kwenza kube lula ukubona umahluko phakathi kokudala kunye nokuhlaziywa kwemveliso. Singaqaqambisa la mahluko sisebenzisa i -d ukhetho.
watch -n 5 -d date
Lo myalelo iya kubaleka umhla rhoqo kwimizuzwana emihlanu kwaye ibonakalise utshintsho kwimveliso kwiscreen sesiphelo.
Susa isihloko kunye nezihloko
Umyalelo wokubukela ubonakalisa ulwazi kwiscreen njengegama lomyalelo owenziwayo, ixesha lokuphumla, kunye nexesha langoku. Yonke into iphezulu kwesikrini. Ukuba sifuna ukuyiphepha, sinokusebenzisa -ukhetho ukukhubaza olu lwazi.
watch -t date
Njengoko benditshilo, lo myalelo iya kubonisa kuphela imveliso eveliswe ngumyalelo umhla.
Phuma ekubukeni kwimeko yempazamo
Singayichaza i-watchdog ukuphuma xa kukho impazamo eveliswe ngumyalelo owenziwayo. Kuya kufuneka sisebenzise i -e ukhetho.
watch -e exit 99
Ukuba uqhuba lo myalelo, uza kubona umyalezo obonisa ukuba lo myalelo unendawo yokuphuma engekho zero. Gcina ukhumbula ukuba imiyalelo eqhutywa ngaphandle kwempazamo, iza nekhowudi yenqanaba zero.
Phuma ukuba utshintsho lwenzeka kwimveliso yomyalelo
La -g ukhetho iphuma ekubukeni nanini na kukho utshintsho kwimveliso.
watch -g date
Lo myalelo uza kusebenza imizuzwana emibini kwaye nje ukuba imveliso ihlaziywe, iwotshi iya kuvalwa.
Yazisa xa kunokwenzeka impazamo
La -b ukhetho jonga i-beeps rhoqo xa umyalelo uphuma kunye nekhowudi yemo engeyo-zero. Njengoko sele kukhankanyiwe, ikhowudi yesimo esingeyo-zero ihlala ibonisa impazamo okanye ukwenziwa komyalelo kusilele.
watch -b exit 99
Tolika iikhowudi zombala kunye nolandelelwano lwesitayile
Sinako Yenza ukutolikwa kweekhowudi Umbala we-ANSI kunye nolandelelwano lwesitayile sokubukela usebenzisa i -c ukhetho. Ngokuzenzekelayo, iwotshi ayiyiguquleli imibala kwimveliso yayo.
watch -c echo "$(tput setaf 2) Ejemplo para Ubunlog"
Iziphumo zalo myalelo zibonisa umtya oluhlaza olufakwe 'Umzekelo Ubunlog'. Ukuba sisusa -c ukhetho kwaye siqhubeke nokuyalela kwakhona, siya kubona ukuba umtya awunawo umbala ngeli xesha.
Jonga utshintsho kumxholo wolawulo
Lo mzekelo ulandelayo ubonakalisa ukuba singasisebenzisa njani isixhobo sokubukela jonga iifayile zenkqubo yeefayile zotshintsho lomxholo.
watch -d ls -l
Lo myalelo uya kuprinta uluhlu lolawulo kwaye uqaqambise utshintsho lomxholo.
Jonga ubushushu beCPU usebenzisa iwotshi
Ukuba usebenzisa izixhobo ezishushu, kubalulekile ukubeka esweni iqondo lobushushu. Siza kukwazi Sebenzisa isixhobo sokubukela kunye boluvo ukulawula ubushushu bezixhobo.
watch -n 60 sensors
Lo myalelo baya kujonga ubushushu bezixhobo ngomzuzu.
Bonisa iphepha loncedo kunye nesikhokelo
Musa ukuthandabuza bona uncedo lomyalelo wokubukela ukuba ufuna ulwazi olukhawulezayo malunga nenketho ethile.
watch -h
Siya kuba nakho uku jonga kwiphepha lesandla ngolwazi oluneenkcukacha malunga nenketho ethile.
man watch
Njengoko sele sibonile, umyalelo wokubukela sisixhobo esilula kodwa siluncedo, esithi Inenani elifanelekileyo lamatyala okusetyenziswa, ayingabo bonke abo baboniswe kweli nqaku.