How to set up cron for backups?

Question

linux

Actually, tell me where to dig.
It is necessary at a certain time (perhaps every few hours) to copy certain files and folders to the /mnt/yandexdisk/ folder.
All files at the destination must be replaced.
This begs two questions:
1. How to make a copy through a bash script?
2. How to run bash with cron?
Or is there another solution, more elegant or more interesting :)
Any help would be welcome.

Answer 1

1. no need to write any scripts, the copy command can be written directly in the cron.
2. crontab -eand insert the time and something like rsync -avzh /from /to. the time can be generated using crontab.guru
and the result should be something like:
0 0 * * * rsync -avzh /from /to- run backup every day at midnight.

Answer 2

Well, a bicycle has been working for me for a long time, probably since 2000. It was written for FreeBSD, but after a little refinement it took off on linux. True, he solves a more complicated problem - to copy the entire specified directory (or database, though he understands only muscle) to point A, and at point A the previous information can either be overwritten or not overwritten.
Actually, it is pointless to run bash by cron - a simple command can be directly written to the crontab, a complex one - to the script file and the name of this file - to the crontab. Where is the crontab? /etc usually has a crontab file, but it's the "root" crontab that I usually avoid editing. In /etc/cron.d you can create files like

SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
*/30 8-17 * * 1-5 root /usr/sbin/my.super.script

The example is a bit non-trivial and means that on weekdays (1-5) from 8 to 17 hours, my.super.script will run every half an hour (*/30)

Answer 3

1. The cp command is our fso.
2. See if you have cron.* directories in /etc. If there is, then look at /etc/crontab - there you will understand how the cron launch is going. And you will surely find examples of scripts that work on cron in these directories.