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symbolic link
軟連接，本質是Unix概念，不是Python概念，
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link in Unix
A link in UNIX is a pointer to a file.
Like pointers in any programming languages, links in UNIX are pointers pointing to a file or a directory.
Creating links is a kind of shortcuts to access a file.
There are two types of links:
- Soft link or Symbolic links
- Hard Links
These links behave differently when the source of the link is moved or removed.
Symbolic links are not updated(they merely contain a string which is the pathname of its target); hard links always refer to the source, even if moved or removed.
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Python 相關函式
os.readlink(path) : returns a string representing the path to which the symbolic link points.
os.symlink(src, dst) : create symbolic link.
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References
- Soft and Hard links in Unix/Linux
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