{"id":10795,"date":"2024-12-11T08:58:28","date_gmt":"2024-12-11T08:58:28","guid":{"rendered":"https:\/\/blog.trustedhosting.in\/?p=10795"},"modified":"2024-12-11T08:58:28","modified_gmt":"2024-12-11T08:58:28","slug":"how-to-setting-up-cron-jobs","status":"publish","type":"post","link":"https:\/\/www.webystrata.com\/blog\/how-to-setting-up-cron-jobs\/","title":{"rendered":"How to Setting up cron jobs"},"content":{"rendered":"

<\/h1>\n

\"How<\/a><\/p>\n

How to Setting up cron jobs<\/h1>\n

cron<\/span><\/code>\u00a0is a time-based job scheduler found in most Linux based operating systems, it is used to execute jobs at regular intervals.<\/p>\n

The easiest way to add cron jobs to your server<\/a> is to use the\u00a0crontab<\/span><\/code>\u00a0utility. The manual page for the tool can tell you all you need to know however you will likely be using\u00a0-u<\/span>\u00a0{username}<\/span><\/code>\u00a0to designate a user and\u00a0-e<\/span><\/code>\u00a0to edit the jobs.<\/p>\n

For example\u00a0crontab<\/span>\u00a0-u<\/span>\u00a0{username}<\/span>\u00a0-e<\/span><\/code>\u00a0opens\u00a0{username}<\/span><\/code>\u2019s\u00a0crontab<\/span><\/code>\u00a0for editing. Using the user\u00a0bob<\/span><\/code>\u00a0as a demonstration, we could use the following command:<\/p>\n

\n
\n
\n
crontab -u bob -e\r\n<\/pre>\n<\/blockquote>\n<\/div>\n<\/div>\n
A typical cron job is comprised of two parts:<\/p>\n
    \n
  • The schedule<\/li>\n
  • The action<\/li>\n<\/ul>\n
    \n
    The Schedule<\/h2>\n
    The schedule denotes the times that the job should be executed, unfortunately this is a little more complicated than just typing \u2018every Tuesday\u2019 but it doesn\u2019t take too long to get used to. The schedule takes five arguments; minute\/hour\/day of month\/month\/day of week, for example:<\/p>\n
    \n
    \n
    \n
    1 0 * * *<\/span>\r\n<\/pre>\n<\/blockquote>\n<\/div>\n<\/div>\n
    tells\u00a0cron<\/span><\/code>\u00a0to run the job at one minute past midnight every day of every month no matter which day of the week it is.<\/p>\n
    \n
    \n
    \n
    1 0 * * 1<\/span>\r\n<\/pre>\n<\/blockquote>\n<\/div>\n<\/div>\n
    Is very similar to our first example however this tells\u00a0cron<\/span><\/code>\u00a0to run the job at one minute past midnight on Monday.<\/p>\n
    \n
    The Action<\/h3>\n
    The second part of the cron job denotes the command to be executed at the given time. Using our examples from above<\/p>\n
    \n
    \n
    \n
    1 0 * * *     \/path\/to\/script.sh<\/span>\r\n<\/pre>\n<\/blockquote>\n<\/div>\n<\/div>\n
    Would run the script at one minute past midnight.<\/p>\n
    There are\u00a0several\u00a0online\u00a0utilities\u00a0that will generate the cron job for you and most control panels will also have a user friendly interface for the system.<\/p>\n<\/section>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
    How to Setting up cron jobs cron\u00a0is a time-based job scheduler found in most Linux based operating systems, it is…<\/p>\n","protected":false},"author":1,"featured_media":10796,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-10795","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/posts\/10795","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/comments?post=10795"}],"version-history":[{"count":3,"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/posts\/10795\/revisions"}],"predecessor-version":[{"id":10799,"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/posts\/10795\/revisions\/10799"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/media\/10796"}],"wp:attachment":[{"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/media?parent=10795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/categories?post=10795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.webystrata.com\/blog\/wp-json\/wp\/v2\/tags?post=10795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}