A cikin labarin na gaba zamuyi la'akari da wasu hanyoyi don amfani da umarnin agogo. Ana amfani da wannan umarnin don aiwatar da duk wani umarni na son kai a lokaci-lokaci, yana nuna sakamakon umarnin da aka ce a cikin taga ta ƙarshe. Wannan na iya zama mai amfani yayin da muke tafiyar da umarni akai-akai kuma kallon canjin fitowar umarni a kan lokaci.
Amfani agogo wani bangare ne na kayan tallafi (ko procps-ng) wanda aka riga aka girka akan kusan duk rarraba Gnu / Linux.
Misalai masu amfani na umarnin agogo a cikin Ubuntu
Yi amfani da mai amfani duba aiki ne mai sauƙi da sauƙi. Bi sassauƙa mai sauƙi kuma babu zaɓi mai rikitarwa.
watch [opciones] comando
Don ƙare madauki ko maimaita, zaka iya amfani Ctrl + C don dakatar da aikin agogon, ko kuma kawai rufe taga taga inda take aiki.
Amfani da asali na umarnin Watch
Lokacin amfani dashi ba tare da jayayya ba, wannan mai amfani zai aiwatar da umarnin da aka ayyana kowane dakika biyu:
watch date
Wannan umarnin zai buga sakamakon da aka samar ta kwanan wata. Hagu na sama na allon zai nuna umarnin da ake aiwatarwa da lokacin tazarar aiki.
Speayyade tazarar sabuntawa
Zamu iya tantance lokacin tazara don sabunta umarnin agogo cikin sauki ta amfani da -n zaɓi. Dole ne a saita sabon tazarar lokaci a cikin sakan.
watch -n 5 date
Yanzu umarnin kwanan wata zai sabunta kowane dakika biyar.
Haskaka da bambance-bambance tsakanin kowane sabuntawa
Watch ya sauƙaƙa don bambance-bambance tsakanin tsohuwar da sabuntawar fitarwa. Zamu iya haskaka waɗannan bambance-bambance ta amfani da -d zaɓi.
watch -n 5 -d date
Wannan umarnin zai fara kwanan wata kowane dakika biyar kuma zai haskaka canje-canje ga fitarwa akan allon tashar.
Cire take da take
Umurnin agogo yana nuna bayanai akan allo kamar sunan umarnin da ake aiwatarwa, tazara, da kuma lokacin yanzu. Komai yana saman allo. Idan muna so mu guji shi, za mu iya amfani da -t zaɓi don musaki wannan bayanin.
watch -t date
Kamar yadda nake fada, wannan umarnin kawai zai nuna fitowar da umarnin yayi kwanan wata.
Fita Duba idan akwai kuskure
Hakanan zamu iya tantance aikin sa ido don fita duk lokacin da wani kuskure ya fito daga umarnin da ake aiwatarwa. Dole ne kawai muyi amfani da -e zaɓi.
watch -e exit 99
Idan kayi amfani da wannan umarnin, zaka gani saƙo wanda ke nuna cewa umarnin yana da matsayin ficewa ba sifili. Ka tuna cewa umarnin da aka zartar ba tare da wani kuskure ba, sun fito tare da lambar halin sifili.
Fita idan canje-canje sun faru a cikin fitowar umarnin
La -g zaɓi fita daga kallo duk lokacin da aka sami canji a fitowar umarnin.
watch -g date
Wannan umarnin zai yi aiki na dakika biyu kuma da zarar an sabunta fitowar, agogon zai rufe.
Sanarwa idan akwai kuskure
La -b zaɓi de agogo duk lokacin da umarni ya fita tare da lambar halin ba sifili. Kamar yadda aka riga aka ambata, lambar matsayi mara sifiri galibi tana nuna kuskure ko cewa zartarwar umarnin ya gaza.
watch -b exit 99
Fassara lambobin launi da tsarin salo
Zamu iya kunna fassarar lambobin ANSI launi da tsarin salo don kallo ta amfani da -c zaɓi. Ta hanyar tsoho, agogo baya fassara launuka a cikin fitarwarsa.
watch -c echo "$(tput setaf 2) Ejemplo para Ubunlog"
Fitowar wannan umarnin yana nuna koren rikodin igiya 'Misali don Ubunlog'. Idan muka cire zaɓin -c kuma muka sake yin amfani da umarnin, zamu ga cewa kirtani ba ya ƙunsar kowane launi a wannan lokacin.
Saka idanu canje-canje zuwa abun ciki na kundin adireshi
Misali na gaba yana kwatanta yadda zamu iya amfani da amfanin agogo zuwa saka idanu kan kundayen tsarin fayil don canje-canjen abun ciki.
watch -d ls -l
Wannan umarnin zai buga jerin adireshi kuma ya haskaka canje-canjen abubuwan.
Saka idanu yanayin zafin CPU ta amfani da agogo
Idan kana amfani da kayan aikin da zasu zafafa, yana da mahimmanci ka lura da yanayin zafin. Za mu iya yi amfani da kayan aikin agogo tare na'urori masu auna sigina don sarrafa zafin jiki na kayan aiki.
watch -n 60 sensors
Wannan umarnin zai bincika zafin jiki na kayan aiki a minti daya.
Nuna shafi na taimako da littafi
Kada ku yi shakka nemi taimakon umarnin agogo idan kuna son saurin bayani don takamaiman zaɓi.
watch -h
Hakanan zamu iya tuntuɓi littafin jagora don cikakken bayani game da takamaiman zaɓi.
man watch
Kamar yadda muka gani, umarnin agogo kayan aiki ne mai sauki amma mai amfani, wanda Yana da kyawawan lambobin amfani, waɗanda ba duk waɗanda aka nuna a wannan labarin ba.