In the Terminal
ls -l /Users/me/tmp
will show if they are symbolic links.
For example
lrwxr-xr-x 1 me staff 33 Jan 5 17:58 this-is-a-symlink -> /Users/me/tmp/tmp.fred.dir
The leading 'l' in lrwxr-xr-x means symbolic link. And the -> points from the symbolic link name to the actual file location
In the Finder a symbolic link will have the same icon as an Alias, which is a small arrow in the lower left corner of the file icon.
You can also use
find /path/to/starting/direcory -type l
to find all the symbolic links. -type l (el) is for symbolic links.
The find command traverses all subdirectories under the starting point, so if you point this at your home directory, it will look at every sub-folder, and sub-sub-folder, etc... starting in your home folder for symbolic links.