Find OpenWrt current version quickly

[merriam]

Is there a way to check in a script to see if I need to update Openwrt? I would like to run a script weekly to see if there is a newer version available.

For Clamav I find the current version like this.

dig +short current.cvd.clamav.net txt | awk -F'[":]' '{print $2}'

I compare that to the results from this command to see if I need an update.

clamscan -V | awk -F'[ /]' '{print $2}'

On openwrt the file /etc/os-release tells me what I am running. Is there a standard URL to check to most recent stable release? All the URLs on the home page to get the current release contain the value of the current release, which I am trying to find out. I really hate having to parse html to find out something.

[vgaetera]

You can subscribe with Email/RSS or fetch and parse JSON: https://openwrt.org/contact#important_changes_and_announcements

[tomn]

Perhaps get the list of tags from github?

curl https://api.github.com/repos/openwrt/openwrt/tags | jq -r '.[] | .name'

It feels like there should be a better way...

[merriam]

Could the openwrt project publish a DNS TXT record, like clamav does, with the current release(s) in it. I guess their are now two "stable" releases and sometimes there is a development release. You could put multiple releases in the TXT record in some established order and I could pick one. Or you could publish multiple TXT records for stable, development, snapshot or whatever. DNS is super flexible.

[bobafetthotmail]

My automated build scripts use this shell code to parse the download webpage at https://downloads.openwrt.org and get the latest release version.

wget -qO- https://downloads.openwrt.org | grep releases | awk -F'/' '{print $2}' | tr '\n' ' ' | awk '{print $1}'

At the moment it is returning
19.07.7

because that is the current stable release

[merriam]

Thanks. That works nicely. I should have been able to figure that out, but I didn't.