Ini ndinomhanyisa sei cron basa muLinux?
Kuvhura Crontab
Chekutanga, vhura hwindo rekupedzisira kubva kuLinux desktop yako yekushandisa menyu. Unogona kudzvanya iyo Dash icon, nyora Terminal uye wodzvanya Enter kuti uvhure imwe kana uri kushandisa Ubuntu. Shandisa iyo crontab -e kuraira kuvhura yako mushandisi account's crontab faira. Mirairo iri mufaira iyi inomhanya nemvumo dzeakaundi yako yemushandisi.
Chii chinonzi cron daemon?
Cron ari daemon yaishandiswa kuronga chero rudzi rwebasa raungafungidzira. Izvo zvinobatsira kutumira maemail pane sisitimu kana hurongwa hwehuwandu, ita yenguva dzose sisitimu kugadzirisa, kugadzira backups, kana kuita chero basa raunogona kufunga nezvaro. Kune mapurogiramu akafanana pane mamwe maOperating Systems.
Ini ndinofanira kutangazve cron?
Kwete iwe haufanirwe kutangazve cron , inozoona shanduko kumafaira ako ecrontab (kungave /etc/crontab kana faira revashandisi crontab).
Ko cron inomhanya sedaemon process?
Cron idhimoni, chirongwa chenguva refu iyo inongoda kutangwa kamwe chete, uye inogara ichimhanya kumashure. Cron anomuka maminetsi ese, anoongorora rondedzero yayo yezvinhu zvekuita kuti aone kana chero mabasa akarongwa anoda kuitwa, uye kana zvakadaro anoaita. Kana zvisina kudaro, inodzokera kunorara kwemamwe masekondi makumi mashanu nemapfumbamwe.
Ndinoziva sei kana basa recron riri kushanda?
Kutarisa kuti uone kana cron daemon iri kushanda, tsvaga maitiro ekumhanya nemirairo yeps. Iyo cron daemon's command icharatidza mune zvakabuda se crond. Iyo yekupinda mune iyi yakabuda ye grep crond inogona kufuratirwa asi imwe yekupinda ye crond inogona kuoneka ichimhanya semidzi. Izvi zvinoratidza kuti cron daemon iri kushanda.
Ndinoziva sei kana cron basa riri kushanda muLinux?
Nzira # 1: Nekutarisa Mamiriro eCron Service
Kumhanyisa iyo "systemctl" kuraira pamwe neiyo mamiriro mureza ichatarisa mamiriro ebasa reCron sezvakaratidzwa mumufananidzo uri pasi apa. Kana iyo mamiriro ari "Active (Kumhanya)" zvino ichasimbiswa kuti crontab iri kushanda zvakanaka, kana zvisina kudaro.
Ndinoshandisa sei cron daemon?
Mushandisi murairo wekushanda ne cron sevhisi ndeye crontab (cron table). Iyo crontab faira iri nyore mavara faira inoraira cron daemon kuita basa pane imwe nguva kana nguva. Chero mushandisi anogona kuronga cron mabasa kana mabasa pane system. Basa racho rinomhanya pasi pemushandisi account kwayakagadzirwa.
Ndinomisa sei cron daemon emails?
Dzima maemail e-cron uchishandisa ">/dev/null 2>&1”
- > = redirect.
- 2>&1 = inodzosera stderr (yakajairwa zvikanganiso) uye stdout (yakajairwa kubuda).
- -s = inoendesa kumberi kune system log.
- -m off = inodzima maemail ecron.
- Kuverenga kwakabatana: Gonesa Otomatiki Zvidzoreso - Fedora/Red Hat/CentOS + Bonus Tip.
Chii chinonzi cron nguva?
Iyo software utility cron inozivikanwawo se cron basa iri nguva-yakavakirwa basa kuronga muUnix-kufanana nemakombiyuta anoshanda masisitimu. Vashandisi vanomisikidza nekuchengetedza nharaunda dzesoftware vanoshandisa cron kuronga mabasa (mirairo kana magwaro ehombodo) kuti imhanye nguva nenguva panguva dzakatarwa, misi, kana nguva.
Ndinotanga sei basa recron?
Mirairo yeRHEL/Fedora/CentOS/Scientific Linux mushandisi
- Tanga cron service. Kutanga sevhisi yecron, shandisa: /etc/init.d/crond start. …
- Misa cron service. Kumisa sevhisi yecron, shandisa: /etc/init.d/crond stop. …
- Tangazve cron service. Kuti utangezve sevhisi yecron, shandisa: /etc/init.d/crond restart.
Ndinomhanya sei crontab?
nzira
- Gadzira iyo ASCII mavara cron faira, senge batchJob1. txt.
- Rongedza iyo cron faira uchishandisa chinyorwa edhita kuti uise murairo kuronga sevhisi. …
- Kuti uite basa re cron, isa mutemo crontab batchJob1. …
- Kuti uone mabasa akarongwa, isa murairo crontab -1 . …
- Kuti ubvise mabasa akarongwa, nyora crontab -r .
Ini ndinodzima sei basa recron?
Maitiro ekubvisa crontab Faira
- Bvisa crontab file. $ crontab -r [ username ] apo zita rekushandisa rinotsanangura zita remushandisi account yaunoda kubvisa crontab faira. …
- Tarisa kuti faira recrontab rabviswa. # ls /var/spool/cron/crontabs.