Are There MiKTeX-Like Systems for Unix?

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I've become rather fond of MiKTeX's package management system. The last time I actually had to manually find a package on CTAN has been a long time ago, because of MiKTeX. Just wondering if anyone knows of a similar system for Unix systems?

 

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I've just taken a look at TeXLive. It seems to be what I'm looking for. I'm on the road quite a bit I don't have access to an internet connection often, therefore, I need every package and piece of documentation whenever possible. MiKTeX contains this, but I'm curious to know if any TeXLive users exist here and if TeXLive contains what I need.