32v 1m ln
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LN(1) UNIX Programmer's Manual LN(1)
ln - make a link
ln name1 [ name2 ]
A link is a directory entry referring to a file; the same file (together with its size, all its protection informa- tion, etc.) may have several links to it. There is no way to distinguish a link to a file from its original directory entry; any changes in the file are effective independently of the name by which the file is known.
_L_n creates a link to an existing file _n_a_m_e_1. If _n_a_m_e_2 is given, the link has that name; otherwise it is placed in the current directory and its name is the last component of _n_a_m_e_1.
It is forbidden to link to a directory or to link across file systems.