ns_symlink - Create a symbolic link
This command creates a symbolic link named filename2 that points to the file or directory specified by filename1. If the link fails, a Tcl error is generated, unless -nocomplain is specified. This is a legacy command from when Tcl did not have this functionality. It is now recommended you use Tcl's file link command instead.
ns_symlink $file1 $file2
is equivalent to:
file link -symbolic $file1 $file2