Impela, asicwilise kukho.
Ezweni lobuchwepheshe eliguquguqukayo, isidingo sokuhlela kahle imisebenzi sibaluleke kakhulu, njengoba kusivumela ukuthi sizenzele futhi silawule imisebenzi ephindaphindayo. Ngokujabulisayo, amasistimu wokusebenza wohlobo lwe-UNIX ahlinzeka ngosizo olubizwa nge-crontab, okwenza lokhu kwenzeke. I-crontab isihleli somsebenzi esisekelwe esikhathini esivumela abasebenzisi ukuthi benze imibhalo ngokuzenzakalelayo isebenze ngezikhathi ezithile noma izinsuku. Kodwa-ke, ngezinye izikhathi, lezi zikripthi azisebenzi ngendlela elindelekile futhi sidinga ukuhlola ukuthi isebenza njengoba kulindelekile.
Ukuhlola imisebenzi ye-crontab ziyadingeka ngaphambi kokuzithumela endaweni yokukhiqiza ukuze kuqinisekiswe ukuthi zisebenza njengoba bekulindelekile. Ihlonza amaphutha nokungalungisi kahle, ngaleyo ndlela iqinisekisa ukusebenza kahle.
Ukulungisa iphutha lomsebenzi we-Crontab
Isinyathelo sokuqala sokuhlola umsebenzi we-crontab ngokubhala iskripthi esilula esingasetshenziswa ukuqinisekisa uma uhlelo lwe-cron lusebenza kahle.
Ukwakha iskripthi esilula, ungasebenzisa
I-IDENTIFICATION DIvision.
I-ID YOHLELO. HELLOCRONJOB.
UKUHLUKANA KWENKQUBO.
BONISA "Umsebenzi we-Cron usetshenziswe ngempumelelo!".
MISA UKUGIJIMA.
Lolu hlelo lwe-Cobol luzobonisa umlayezo othi "Umsebenzi we-Cron wenziwe ngempumelelo!" phezu kokubulawa ngempumelelo.
Ukusetha Umsebenzi we-Crontab
Isinyathelo esilandelayo ukuhlela iskripthi ukuthi sisebenze ne-crontab. Ukuze uhlele ifayela le-crontab, ungasebenzisa umyalo "crontab -e". Uma usungaphakathi kwefayela, setha iskripthi sakho ukuthi sisebenze njalo ngeminithi usebenzisa * * * * * njengamapharamitha. Nansi indlela ongakwenza ngayo:
* * * * * BONISA i-cobol HELLOCRONJOB
Ukuqapha Umsebenzi we-Crontab
Ngemuva kokusetha umsebenzi we-crontab, yiqaphe usebenzisa insiza ye-syslog ukuze uqinisekise ukuthi isebenze ngempumelelo. Ukuze wenze lokhu, sebenzisa umyalo "grep CRON /var/log/syslog". Uma umsebenzi wenziwe ngempumelelo, uzobonisa umlayezo othi “Umsebenzi we-Cron wenziwe ngempumelelo!”.
Nakuba i-crontab iyindlela ephumelelayo yokwenza imisebenzi ngokuzenzakalelayo kumasistimu asekelwe e-Unix, kubalulekile ukuqinisekisa ukuthi imibhalo isebenza ngendlela efanele ngaphambi kokuyithumela. Ukuhlola okulungile kungonga isikhathi esibalulekile nezinsiza ngokuhamba kwesikhathi.
Ngokungeziwe ekuqondeni nasekuphatheni ubunkimbinkimbi bohlelo lwe-Cobol, kubaluleke kakhulu ukuthi futhi uqonde ukuthi i-SEO inikela kanjani empumelelweni yokubonakala kwakho ku-inthanethi. Imfashini, njengobuchwepheshe, nayo iyinkambu eguqukayo enezinguquko ezivamile zezitayela namathrendi.
Ukuqonda Okuthrendayo Kwemfashini Ngomlando:
Amathrendi emfashini abonisa izinguquko zomphakathi ngezikhathi ezihlukene. Isibonelo, isitayela "se-flapper" seminyaka yawo-1920 sasimele ukuzimela okukhulayo kwabesifazane, kuyilapho amasudi ahlotshisiwe eminyaka yama-80s afanekisela ukubusa okukhulayo kwabesifazane emhlabeni wezinkampani.
Okuthrendayo Kwemfashini Kwamanje:
Amathrendi amanje ancike ekuzinzeni nasekuhlukeni komuntu ngamunye. Umkhuba "wokugqoka amandla" unikeza abantu amandla okuveza ubuntu babo. Umuntu angase axube ibhulukwe lakudala nebhulukwe lesimanje, abonise inhlanganisela yesikhathi esidlule nesamanje.
Ngethemba ukuthi lolu lwazi luyakusiza ekufuneni kwakho ukuqonda i-Cobol, i-SEO, nemfashini. Ukufunda okujabulisayo!
