[OS X TeX] OS X TeX newbie needs help installing TeX on non-boot volume
amorton at fastmail.fm
Tue Sep 13 18:28:13 EDT 2005
> A hard link does not consume disk space (it's just some bytes in the
> already reserved space of the inode table). A sym-link takes at least
> one disk block, plus the inode entry. The hard link and it's 'origin'
> cannot be distinguished -- they're one file (with two eMail
> addresses). A sym-link and its target are two different files -- or
> one too: the sym-link pointing to a non-existent file.
Actually, it depends on the underlying file system. On a traditional
Unix File System (UFS) this is all true. But HFS+ (the default under
OS X) doesn't have inodes, so there's a tricky workaround at the kernel
level to make hard links work and to mock-up the inode numbers. The
result is that both hard links and symbolic links take up disk space on
HFS+, and hard links might actually take up slightly more.
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