{"id":79,"date":"2021-03-02T21:32:54","date_gmt":"2021-03-02T21:32:54","guid":{"rendered":"https:\/\/www.jibsheet.net\/linux\/?p=79"},"modified":"2021-03-02T21:32:54","modified_gmt":"2021-03-02T21:32:54","slug":"crontab-tips-and-reference","status":"publish","type":"post","link":"https:\/\/www.jibsheet.net\/linux\/index.php\/2021\/03\/02\/crontab-tips-and-reference\/","title":{"rendered":"Crontab – tips and reference"},"content":{"rendered":"

Crontab tips<\/h3>\n

edit – “contrab -e”<\/p>\n

to list “crontab -l”<\/p>\n

Link to Manpage online –\u00a0https:\/\/man7.org\/linux\/man-pages\/man5\/crontab.5.html<\/a><\/p>\n

 <\/p>\n

\r\n\/\/ shamelessly stolen from stackoverflow\r\n\r\ncrontab does not understand \"intervals\", it only understands \"schedule\"\r\n\r\nvalid hours: 0-23 -- valid minutes: 0-59\r\n\r\nexample #1\r\n\r\n30 * * * * your_command\r\n\r\nthis means \"run when the minute of each hour is 30\" (would run at: 1:30, 2:30, 3:30, etc)\r\n\r\nexample #2\r\n\r\n*\/30 * * * * your_command\r\n\r\nthis means \"run when the minute of each hour is evenly divisible by 30\" (would run at: 1:30, 2:00, 2:30, 3:00, etc)\r\n\r\nexample #3\r\n\r\n0,30 * * * * your_command\r\n\r\nthis means \"run when the minute of each hour is 0 or 30\" (would run at: 1:30, 2:00, 2:30, 3:00, etc)\r\n\r\nit's another way to accomplish the same results as example #2\r\n\r\nexample #4\r\n\r\n19 * * * * your_command\r\n\r\nthis means \"run when the minute of each hour is 19\" (would run at: 1:19, 2:19, 3:19, etc)\r\n\r\nexample #5\r\n\r\n*\/19 * * * * your_command\r\n\r\nthis means \"run when the minute of each hour is evenly divisible by 19\" (would run at: 1:19, 1:38, 1:57, 2:19, 2:38, 2:57 etc)<\/pre>\n","protected":false},"excerpt":{"rendered":"
Crontab tips edit – “contrab -e” to list “crontab -l” Link to Manpage online –\u00a0https:\/\/man7.org\/linux\/man-pages\/man5\/crontab.5.html   \/\/ shamelessly stolen from stackoverflow crontab does not understand “intervals”, it only understands “schedule” valid hours: 0-23 — valid minutes: 0-59 example #1 30 * * * * your_command this means “run when the minute of each hour is 30” (would run at: 1:30, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"yoast_head":"\nCrontab - tips and reference - Jon Allen's Linux Stuff<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jibsheet.net\/linux\/index.php\/2021\/03\/02\/crontab-tips-and-reference\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Crontab - 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