How to change symlinks atomically - Tom Moertel’s Blog

Many people don’t realize that changing the target of a symbolic link (symlink) is not an atomic operation. “Changing” a symlink really means deleting it and creating a new link with the same file name. For example, if I have a symlink current that points to a directory old, and I want to change it to point to a directory new, I might use the following command: $ ln -snf new current Strace shows w

[fcicq]

ln -s new current_tmp && mv -Tf current_tmp current

[hiboma]

symlink(2), rename(2)

[udzura]

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