Ndiyihlela njani ifayile yecrontab kwiLinux?
Uyenza njani okanye uyihlele njani iFayile yecrontab
- Yenza ifayile entsha yecrontab, okanye uhlele ifayile esele ikhona. # crontab -e [ igama lomsebenzisi] ...
- Yongeza imigca yomyalelo kwifayile yecrontab. Landela i-syntax echazwe kwi-Syntax ye-crontab yamaNgeno eFayile. …
- Qinisekisa utshintsho lwefayile yakho yecrontab. # crontab -l [ igama lomsebenzisi]
Uwuhlela njani umsebenzi wecron?
Qaphela: Ukuhlela ifayile yecrontab usebenzisa Nano umhleli, ungangenisa ngokuzikhethela i EDITOR=nano crontab -e umyalelo. I-Vi inemowudi yokufaka kunye nemo yomyalelo. Ungavula imowudi yokufaka usebenzisa iqhosha i. Oonobumba abangenisiweyo baya kufakwa ngoko nangoko kumbhalo kule mowudi.
Zigcinwa phi iifayile zecrontab?
Iifayile zeCrontab zihlala ngaphakathi /var/spool/cron/crontabs/ phantsi kwegama lomsebenzisi lomntu okanye i-ID yomsebenzisi. Ekubeni iimeko zinokuvela apho i-crontab ekhoyo apha ingasaqhagamshelwanga kwiakhawunti yakho yokungena, kuyacetyiswa ukuba ugcine ikopi kulawulo lwakho lwasekhaya, yithi /home/usid/.
Ndingahlela etc crontab?
Le yinkqubo yetafile yecron (ifayile yecrontab), akukho mbono yokubizela umsebenzisi apha njenge ngumsebenzisi ophezulu kuphela ongakwazi ukuhlela le fayile, yenza le fayile idinga imihlaba eyi-7, kunye nentsimi yegama lomsebenzisi elongezelelweyo kwisithuba/isithuba esahlulwe kumhlaba wesi-6. Oku kuyinyani kuzo zonke iifayile zecron kwi /etc/cron.
Iphi ifayile yecrontab kwiLinux?
Ifayile yecrontab iya kufakwa /var/spool/cron/crontabs . Qinisekisa ifayile yecrontab ngokusebenzisa i-crontab -l umyalelo.
Yintoni ukusetyenziswa kwecrontab kwiLinux?
I-crontab luludwe lwemiyalelo ofuna ukuyenza kwishedyuli eqhelekileyo, kunye negama lomyalelo osetyenzisiweyo ukulawula olo luhlu. I-Crontab imele "itafile yecron," kuba isebenzisa umcwangcisi wemisebenzi cron ukwenza imisebenzi; cron ngokwayo ithiywe ngegama elithi “chronos,” igama lesiGrike elithetha ixesha.
Ndiyitshintsha njani i-sudo crontab?
I-crontab -e ihlela i-crontab yomsebenzisi wangoku, ngoko ke nayiphi na imiyalelo equlethwe ngaphakathi izakwenziwa njengomsebenzisi oyicrontab oyihlelayo. I-sudo crontab -e izakuhlela abasebenzisi beengcambu kwicrontab, kwaye ke imiyalelo engaphakathi iya kuqhutywa njengengcambu. Ukongeza kwi-cduffin, sebenzisa umthetho weemvume ezisezantsi xa uqhuba icronjob yakho.
Ndiwuvula njani umsebenzi wecron?
Ukuvula iCrontab
Sebenzisa icrontab -e umyalelo ukuvula ifayile yecrontab yeakhawunti yakho yomsebenzisi. Imiyalelo kule fayile isebenza ngeemvume zeakhawunti yakho yomsebenzisi. Ukuba ufuna umyalelo wokuqhuba ngeemvume zesistim, sebenzisa i sudo crontab -e umyalelo ukuvula ifayile yecrontab yeakhawunti yengcambu.
Ndazi njani ukuba umsebenzi wecron uyasebenza?
Eyona ndlela ilula yokuqinisekisa ukuba icron izamile ukuqhuba umsebenzi kukwenza ngokulula khangela ifayile yelog efanelekileyo; iifayile zelog zingohluka ukusuka kwindlela ukuya kwisixokelelwano. Ukumisela ukuba yeyiphi ifayile yelog equlethe iilog zecron sinokujonga nje ukwenzeka kwegama elithi cron kwiifayile zelog ngaphakathi /var/log.
Ndiyenza njani ikopi yefayile yecrontab?
Unokwenza ukhuphelo olupheleleyo lwe/var/spool/cron directory. Iqulethe zonke iicrontabs zabo bonke abasebenzisi. Ungabaleka ngamaxesha athile crontab -l > my_crontab. ikopi yokugcina icrontab kwifayile.
Ndilugcina njani ukuhlelwa kwecrontab?
Uyihlela kwaye uyigcine njani ifayile yecrontab kwiLinux?
- cofa u-esc.
- cofa i (ukwenzela "ukufaka") ukuqalisa ukuhlela ifayile.
- coma umyalelo wecron kwifayile.
- cofa u-esc kwakhona ukuphuma kwindlela yokuhlela.
- uhlobo :wq ukugcina (w – bhala) kwaye uphume (q – quit) ifayile.
Ngaba icrontab iqhutywa njengengcambu?
2 Iimpendulo. Bona zonke zibaleka njengengcambu . Ukuba ufuna ngenye indlela, sebenzisa i-su kwiskripthi okanye ungeze i-crontab yokungena kwi-crontab yomsebenzisi ( man crontab ) okanye i-crontab yenkqubo-ebanzi (endawo yayo andinakukuxelela kwi-CentOS).