diff options
| author | Mark McNally <mark@mcnally.je> | 2021-06-30 18:42:45 +0100 |
|---|---|---|
| committer | Mark McNally <mark@mcnally.je> | 2021-06-30 18:42:45 +0100 |
| commit | acc74124b5152525078309c2b51ddd7901673239 (patch) | |
| tree | dbf15f8a5cfceb25671df3545fbf8af7b8efc1f6 | |
| parent | 9af5424f70e3f84cd08bdc771304d1c200c38c6c (diff) | |
cron timings explained better, personal ad made less overt
| -rw-r--r-- | cron.html | 62 |
1 files changed, 17 insertions, 45 deletions
@@ -61,25 +61,21 @@ </p> <p> Crontab expressions look like this <code> * * * * * command-to-run </code> + <p> + So for our Monday at 3:30AM job we would do the following: + <p> <pre> - .---------------- minute (0 - 59) - | .------------- hour (0 - 23) - | | .---------- day of month (1 - 31) - | | | .------- month (1 - 12 - | | | | .---- day of week (0 - 6) - | | | | | - * * * * * + .---------------- minute (0 - 59) + | .------------- hour (0 - 23) + | | .---------- day of month (1 - 31) + | | | .------- month (1 - 12 + | | | | .---- day of week (0 - 6) + | | | | | + * * * * * +30 3 * * 1 apt-get -y update && apt-get -y dist-upgrade </pre> <br> - <aside> - <p> Run the command <code> cat /etc/crontab </code> to see something similar to the above </p> - </aside> - <p> - So for our Monday at 3:30AM job we would do the following: - <pre> - <code> 30 3 * * 1 apt-get -y update && apt-get -y dist-upgrade </code> - </pre> <br> <aside class=callout> <p> @@ -90,13 +86,15 @@ <aside> <p> The website <a href="crontab.guru">https://crontab.guru</a> is insanely helpful for figuring out specific cron timings + <p> Run the command <code> cat /etc/crontab </code> to see a basic expalnation on how to write crontab timings </p> </p> </aside> <p> - Lets add another Job, our backup job (for the purposes of this our backup command is just called <code> backup </code> We want to run <code> backup </code> Every evening at 11PM, once we work out the timings for this we can add the to the same file as the above by running <code> crontab -e </code> This would mean our full crontab would look like this: + Lets add another Job, our backup job (for the purposes of this our backup command is just called <code> backup</code>) We want to run <code> backup </code> Every evening at 11PM, once we work out the timings for this we can add the to the same file as the above by running <code> crontab -e </code> This would mean our full crontab would look like this: <pre> - <code> 30 3 * * 1 apt-get -y update && apt-get -y dist-upgrade </code> - <code> 0 23 * * * backup </code> + 30 3 * * 1 apt-get -y update && apt-get -y dist-upgrade + + 0 23 * * * backup </pre> <h3> System wide cron directories </h3> @@ -152,35 +150,9 @@ <h2> Contribution </h2> <p> - This article was written by Mark McNally + - Mark McNally -- <a href="https://mark.mcnally.je">website</a>, <a href="https://www.youtube.com/channel/UCMiInY8BhSUtCarO6uu6i_g">Youtube</a> </p> - <ul> - <li> - I am a (internet) LandChad, my website is <a href="https://mark.mcnally.je">here</a> - </li> - <li> - Contact me about this article or just because <a href="mailto:mark@mcnally.je">here</a> - </li> - <li> - I have a <a href="https://www.youtube.com/channel/UCMiInY8BhSUtCarO6uu6i_g">youtube channel</a> where I may post some LandChad related content as well as other content that you will hopefully find interesting - <li> If you feel like donating: </li> - <ul> - <li> XMR: <code> 42ueuWXJGP48xtahfnujWDMFHJVdMGeFj85jxuwPBygkVw1GEBbHfTsDFBByTSLXpDV4bKcNr7EPCfvSJpyYLY5HPvqUmRB </code> </li> - <li> BTC: <code> 36mXUtU6Kh9pmYvGYPLY7peHU4TR7FBATT </code> </li> - </ul> - </ul> - <p> - Yes I know I need to set up OpenAlias... - </p> - - - - - - - - </main> |