title: what does mac os /Library folder store?
body: <p>I am a new to mac osx. One thing confusing me is what does <code>/Library</code> or <code>/System/Library</code> folders store? As its name meaning, I thought is should be something like <code>/lib</code> or <code>/usr/lib</code> in Linux. However, it does not. Inside it, it looks more similar to application bundles. And all naming is very application-specific, like <code>/Library/iChat</code>. If they are application-specific, then why they are called <code>Library</code>? Usually when named as <code>Library</code>, it is for codes or resources sharing purpose.</p>