If you want to check whether
$path is a symbolic link whose target is
/some/where, you can use the
readlink utility. It isn't POSIX, but it's available on many systems (GNU/Linux, BusyBox, *BSD, …).
if [ "$(readlink -- "$path")" = /some/where ]; then …
Note that this is an exact text comparison. If the target of the link is
/some//where, or if it's
where and the value of
/some/link, then the texts won't match.
Many versions of
readlink support the option
-f, which canonicalizes the path by expanding all symbolic links.
Many shells, including dash, ksh, bash and zsh, support the
-ef operator in the
test builtin to test whether two files are the same (hard links to the same file, after following symbolic links). This feature is also widely supported but not POSIX.
if [ "$path" -ef "/some/where" ]; then …