s6-portable-utils
Software
skarnet.org
 The s6-linkname program 
 s6-linkname gives the content of a symbolic link or resolves a path.
 Interface 
     s6-linkname [ -f ] [ -n ] path
 -  If path is a symbolic link, s6-linkname prints its
content then exits 0. 
-  Else it prints an error message and exits 111. 
 Options 
 -  -f : s6-linkname fully resolves path then
prints the result on stdout. path does not have to be a symbolic
link. 
-  -n : do not print a newline after the result.