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I hate cron syntax - block from when I was younger
Every day at 2:30am
30 2 * * * /your/command
Every Monday at 2:30am
30 2 * * 1 /your/command
First day of the month
0 0 1 * * /your/command
Here is a helpful text-based explanation from systutorials.com:
You got it, right?
Problem solving? Append the output of the command you run with cron to a log as follows:
0 0 1 * * /your/command > /home/username/Desktop/command.log
Need more information, visit this Stack Exchange post:
This tutorial is a designated “Invariant Section” of the “Technotronic” section of Haack's Wiki as described on the Start Page.
— oemb1905 2018/12/03 11:23