Linux Crontab yana aiwatar da umarnin aikin rubutun akai-akai & saita amfani da fayil ɗin sanyi

LinuxTsarin cron da aka gina a ciki zai iya taimaka mana saduwa da buƙatun aiwatar da ayyukan da aka tsara.Ta hanyar amfani da rubutun cron da harsashi, babu matsala a kai a kai aiwatar da ƙaƙƙarfan umarnin ɗawainiya.

Menene Cron?

Abin da muke yawan amfani da shi shinecrontabumarni, wanda gajere ne don tebur cron.

Yana da fayil ɗin sanyi don cron, wanda kuma ana iya kiransa jerin ayyuka.

Za mu iya nemo fayilolin sanyi masu dacewa a cikin manyan manyan fayiloli masu zuwa.

• Littafin / var / spool / cron / directory yana adana ayyukan crontab ga kowane mai amfani ciki har da tushen, kuma kowane ɗawainiya ana ba da sunan mahalicci.
• /etc/crontab Wannan fayil ɗin yana da alhakin tsara ayyuka daban-daban na gudanarwa da kulawa.
• /etc/cron.d/ Ana amfani da wannan jagorar don adana duk fayilolin crontab ko rubutun da za a aiwatar.
• Hakanan zamu iya sanya rubutun a /etc/cron.hourly, /etc/cron.daily, /etc/cron.weekly, /etc/cron.monthly directories, bar shi aiwatar kowane awa/rana/mako, wata.

Yaya ake amfani da Crontab?

Umurnin da aka saba amfani da su sune kamar haka:

crontab [-u username]　　　　//省略用户名表示操作当前用户的crontab
    -e      (编辑工作表)
    -l      (列出工作表里的命令)
    -r      (删除工作表)

muna amfanicrontab -eShigar da gyare-gyaren takardar aiki na mai amfani na yanzu, wanda shine gama gari na vim.Kowane layi umarni ne.

Gyara Takardun Aiki▼

crontab -e

Lissafin takardun aiki ▼

crontab -l

Share takardar aiki ▼

crontab -r 

Umarnin crontab ya ƙunshi lokaci + aiki, kuma lokacinsa shineminti, awa, rana, wata, makoBiyar, mai aiki yana da

• * duk lambobi a cikin kewayon
• / lambobi nawa
• - daga X zuwa Z
• ,lambobi

Crontab Yana Aiwatar da Misalin Umurnin Ayyukan Aiki

Misali 1: Kashe umarnina kowane minti 1

* * * * * myCommand

Misali 2: Kisa a minti na 3 da 15 na kowace awa

3,15 * * * * myCommand

实例3：在上午8点到11点的第3和第15分钟执行

3,15 8-11 * * * myCommand

实例4：每隔两天的上午8点到11点的第3和第15分钟执行

3,15 8-11 */2  *  * myCommand

实例5：每周一上午8点到11点的第3和第15分钟执行

3,15 8-11 * * 1 myCommand

Misali 6: Sake kunna smb a 21:30 kowane dare

30 21 * * * /etc/init.d/smb restart

实例7：每月1、10、22日的4 : 45重启smb

45 4 1,10,22 * * /etc/init.d/smb restart

Misali 8: Sake kunna smb a 1:10 kowace Asabar da Lahadi

10 1 * * 6,0 /etc/init.d/smb restart

Misali 9: Sake kunna smb kowane minti 18 tsakanin 00:23 zuwa 00:30 kowace rana.

0,30 18-23 * * * /etc/init.d/smb restart

Misali 10: Sake kunna smb kowace Asabar da karfe 11:00 na dare

0 23 * * 6 /etc/init.d/smb restart

Misali 11: Sake kunna smb kowane awa

* */1 * * * /etc/init.d/smb restart

Misali 12: Sake kunna smb kowane awa tsakanin 11pm da 7am

* 23-7/1 * * * /etc/init.d/smb restart

Yadda ake share takamaiman aikin Crontab?

SSH shigar da umarnin crontab mai zuwa ▼

crontab -e

• Tsammanin ayyuka da yawa, share ƙayyadaddun aikin da aka tsara a cikin vim (matsar da siginar zuwa layin daidaitawa don sharewa, danna maɓallin sharewa don sharewa)

latsa :wq ajiye ku fita

Bincika don ganin ko an share aikin Crontab?

crontab -l

• An gano cewa aikin crontab da aka tsara wanda aka share bai wanzu ba, wanda ke nufin cewa gogewar ya yi nasara.

Cibiyar Kula da CWPYadda ake saita Ayyukan da aka tsara na Crontab

• A cikin aikin da aka tsara, ƙara umarnin aiki tare don aiki tare ta atomatik fayilolin ajiya na kwamitin kula da CWP zuwa GDrive.

Idan amfani da CWP Control Panel, shiga cikin CWP Control Panelna Server Setting → Crontab for root ▼

A cikin "Ƙara Cikakkun Ayyukan Cron na Custom", shigar da cikakken umarnin cron na al'ada ▼

00 7 * * * rclone sync /backup2 gdrive:cwp-backup2
55 7 * * * rclone sync /newbackup gdrive:cwp-newbackup

• (Aiki tare ta atomatik directory na gida kowace safiya da karfe 7:00 na safe /backup2zuwa faifan cibiyar sadarwa tare da sunan sanyi gdrivebackup2Kundin abun ciki)
• (Aiki tare ta atomatik directory na gida kowace safiya da karfe 7:55 na safe /newbackup  zuwa faifan cibiyar sadarwa tare da sunan sanyi gdrivecwp-newbackupKundin abun ciki)
• ƘariWordPressDon fayilolin gidan yanar gizon, ana ba da shawarar kada a yi ajiyar kuɗi da yawa, saboda gwajin ya gano cewa idan sunayen fayilolin iri ɗaya ne, amma abubuwan da ke cikin fayilolin sun bambanta, ba za a daidaita su ba.

Sakamakon farawa da aka tsararcloneBayan an gama aiki tare ta atomatik, tsarin rclone na iya ci gaba da gudana a bango, wanda zai mamaye kusan kashi 20% na albarkatun CPU kuma ya haifar da ɓarnawar albarkatun uwar garke.

Sabili da haka, yana da mahimmanci don ƙara cikakkiyar umarnin ɗawainiya da aka tsara don tilasta tsarin rclone don rufe ▼

00 09 * * * killall rclone

• (Rufe tsarin rclone da ƙarfi ta atomatik da ƙarfe 7:00 kowace safiya)

Idan kwamitin kula da CWP ba zai iya gyara ayyukan da aka tsara na Crontab ba, zaku iya amfani da FTP软件文件 /var/spool/cron/ Shirya ayyukan lokaci na Crontab kai tsaye.

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Tun da mafi kyawun hanyar inganta hanyar sadarwa shine SEO, yawancin masu sayar da cibiyar sadarwa tare da ƙwarewar SEO masu arziki za su zabi siyan VPS (Virtual Private Server) don gina gidan yanar gizon.Tunda ana amfani da VPS, ya zama dole a yi wa VPS wariyar ajiya. Za a iya haɗa madadin VPS zuwa GD tare da madadin rclone ...