Fix cp -n

[michacassola]

Running the wizard script for installation gives me the following output a few times:

cp: warning: behavior of -n is non-portable and may change in future; use --update=none instead

So I updated the commands and comments regarding that.

[github-actions]

@michacassola: There are no 'kind' label on this PR. You need a 'kind' label to generate the release automatically.

• /kind feature
• /kind enhancement
• /kind refactoring
• /kind fix
• /kind chore
• /kind dependencies

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[github-actions]

@michacassola: There are no area labels on this PR. You can add as many areas as you see fit.

• /area agent
• /area local-api
• /area cscli
• /area appsec
• /area security
• /area configuration

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[michacassola]

/kind fix
/area configuration

[LaurenceJJones]

@mmetc should we use rsync instead of cp or since it outside of the container we should stick to cp?

[mmetc]

@mmetc should we use rsync instead of cp or since it outside of the container we should stick to cp?

-1, you can't have a dependency on rsync just to install something

[blotus]

Hello,

I don't think we can merge as is: depending on the OS, cp will accept different arguments.
For example, with a recent-ish cp running on ubuntu 24.04, the man page does mention that -n is deprecated and --update=node should be used.

But on Ubuntu 22.04 (which is still supported), the man page does not mention this and when attempting to use cp --update=node, cp returns an error: cp: option '--update' doesn't allow an argument