The file is stored in /var/spool/cron/crontabs but should only be edited using the crontab command.
Where are crontab files stored?
Iifayile zecrontab zigcinwe ngaphakathi /var/spool/cron/crontabs . Iifayile ezininzi zecrontab ngaphandle kweengcambu zinikezelwe ngexesha lofakelo lwesoftware yeSunOS (jonga le theyibhile ilandelayo). Ngaphandle kwefayile yecrontab engagqibekanga, abasebenzisi banokwenza iifayile zecrontab ukucwangcisa imicimbi yabo yenkqubo.
Ndizijonga njani iifayile zecrontab kwiLinux?
Uluhlu lweMisebenzi yeCron kwiLinux
Ungazifumana ngaphakathi /var/spool/cron/crontabs. Iitafile ziqulethe imisebenzi yecron yabo bonke abasebenzisi, ngaphandle komsebenzisi weengcambu. Umsebenzisi wengcambu unokusebenzisa i-crontab yenkqubo yonke. Kwiinkqubo ezisekelwe kwi-RedHat, le fayile ifumaneka /etc/cron.
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]
Ndiyijonga njani icrontab?
2.Ukujonga amangeniso eCrontab
- Jonga amangeno eCrontab yangoku oNgenelwe nguMsebenzisi : Ukujonga amangeno akho ecrontab chwetheza icrontab -l kwiakhawunti yakho yeunix.
- Jonga amangeniso eNgcambu yeCrontab : Ngena njengomsebenzisi weengcambu (su – ingcambu) kwaye wenze crontab -l.
- Ukujonga amangeno ecrontab yabanye abasebenzisi beLinux : Ngena kwingcambu kwaye usebenzise -u {igama lomsebenzisi} -l.
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).
Ziziphi iifayile zecrontab?
Ifayile yecrontab yi ifayile yokubhaliweyo elula equlathe uluhlu lwemiyalelo emele ukwenziwa ngamaxesha athile. Ihlelwa kusetyenziswa umyalelo wecrontab. Imiyalelo ekwifayile yecrontab (kunye namaxesha azo okuqhuba) ijongiwe yicron daemon, ezenza ngasemva kwindlela.
Ndazi njani ukuba umsebenzi wecron uphumelele?
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.
Ndiyibona njani yonke i-crontab yabasebenzisi?
Ngaphantsi kwe-Ubuntu okanye i-debian, unokujonga i-crontab nge /var/spool/cron/crontabs/ kwaye ke ifayile yomsebenzisi ngamnye ilapho. Oko kuphela kwe-crontab ethile yomsebenzisi ngokuqinisekileyo. KwiRedhat 6/7 kunye neCentos, i-crontab iphantsi /var/spool/cron/. Oku kuya kubonisa onke amangeno ecrontab kubo bonke abasebenzisi.
How do I edit crontab entry?
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]
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.
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.