Usage
The SUS mandates for ln two options: -f will force removal of existing files to allow the link to be created; and -s will create symbolic links. Therefore, ln with no options creates a hard link, ln -f forces a hard link, ln -s creates a symbolic link, and ln -fs forces a symbolic link. In order to link to a folder (vs. a file), use the -n option so that the symbolic link is not dereferenced:
ln -sfn existing/folder new/folder/aliasOther Unix and Unix-like operating systems may add extra options. GNU ln adds options such as -b to back up files before creating links, -v to print out the name of each file before links are created, and others. BSD ln adds -h, preventing ln from descending into targets whose symlinks point to directories
ln file_name link_namewould have the effect of creating a hard link called link_name that points to the same data as the existing file file_name.
Read more about this topic: Ln (Unix)
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