Debian commands on Ubuntu system

I found a nice video tutorial aimed at Debian 6.x users. I have Ubuntu 14.04  My question is... Can I just blindly use on modern Ubuntu system what they showed on older Debian system? Or should I be careful here? What's the risk, if any? Especially regarding LAMP install and commands (and also Apache configuration). Apache 2.2 back then (right?) and now it's 2.4... What do you think?
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It usually works. But I can't say it safe because there are a lot of different guides out there, and even Ubuntu-guides doesn't work on all Ubuntu systems due to errors in the guides and small differences between Ubuntusystems.

I'd test out the Debian commands in a virtual Ubuntu first. And as always, make sure you have a recent backup of your systems!
papakotaAuthor Commented:
Thanks for your reply!

I don't do VM and backups are just that... I don't feel like wasting time re-installing my OS (and the rest of the stuff that comes with it) even if I've got 10 backups. That's first...
I'm not asking you to give me a guarantee in regards to some video course. Again, let's not move away from my original question. Let me somewhat disagree with you about "a lot of different guides" because there's such a thing as a reputation. I'm talking here about one of the oldest and as far as I know very decent company that produces Linux video tutorials. This one here:
Ubuntu 14 is roughly Debian 7

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Can you explain why my answer is incomplete?
papakotaAuthor Commented:
Frankly, I don't think anyone here deserves points to begin with. If I were you, I'd be happy with what I've got.
You guys express your opinions, but I need facts and explanations. W7 is about the same as W95... Would such an answer suffice if someone asked me to tell him the difference between Windows 7 and 95?
You just want to save $$$ and get your points. That's not the reason why this site exists...
Windows 7 is more like NT than windows 98 looks reasonable?
papakotaAuthor Commented:
Nope, if someone here had asked me about the difference between W7 and W95 in the context of console commands (that's it all about, isn't it?), I would have explained that you can safely execute ALL of them and even if some command won't work, not to worry -- it won't break anything. Something like that...
It is more or less the same. sysvinit -> upstart is not a big pain as most scripts are systemV anyway
apache 2.2->2.4 -> MPM module is loadable, not precpmpiled

You know it is minor things, but most complex things will not work right away waiting for magic one-line change to happen.
Anyway what you do is Debian 6->7, so thats unavoidable learning by doing...
papakotaAuthor Commented:
Okay, okay... thanks! Though I didn't quite understand what you had written here, but no worries.
Hard to understand why you punish me when life is not fair.
papakotaAuthor Commented:
I spoil you, not punish... Well, next time don't answer me if you feel discriminated against.
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