kpsereadlink - print contents of symbolic link
kpsereadlink file
If file is a symbolic link, print its contents (what it links to), and
exit successfully. Exit with a failure otherwise.
On systems that do not support symbolic links, kpsereadlink will always
fail.
kpsereadlink accepts the following additional options:
--help Print help message and exit.
--version
Print version information and exit.
readlink(2)