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re: symbolic links/aliases
Authored by: russoedu on Apr 26, '10 03:08:52AM
Aliases and Symbolic Links differs in lots of things. SymLinks just points to the original file location, so, if you move the original, it will not find it! Aliases points in a "magic" way that allways find the original, even if you move it or rename it. I had a big discussion about this with A. S. Tanembaun!!! And even him could tell how Mac Alias work, it's really a big magic to always point to the right place. That's why Alias files are bigger that SymLinks. Hardlinks, on the other way, points to the "node" (you have to understand how HFS+ works to understand this deeply) of the original file, so it IS the original file. That's why when you check it's size, it will look like the original. But the magic is that it does not take more file space than the original! You can test this in a big video file: do a HardLink and check how much of your disk was taken. Probably only 4kb (of HFS+ minimum file size). I made a video about Aliases to show to Tanembaun how it works: YouTube video link

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