View a list of symbolic links on system?

Try the following command:

dir /AL /S C:\

• /A displays all files with a specific attribute, and L specifies reparse points (symlinks and directory junctions)
• /S makes the command recursive
• replace C:\ with the drive letter you want to scan, or with a path if you don't want to scan an entire drive

In PowerShell

Get-ChildItem -Path C:\ -Force -Recurse -ErrorAction 'silentlycontinue' | 
  Where { $_.Attributes -match "ReparsePoint"}

• -Force includes hidden and system files
• -Recurse gets all child items
• -ErrorAction 'silentlycontinue' suppresses Access to the path XYZ is denied errors
• Where { $_.Attributes -match "ReparsePoint"} checks folders and files if it's a junction

Explanation of Mode and Attributes†:

PS > GCI | SELECT Mode,Attribuets -Unique

Mode                    Attributes
----                    ----------
d----                    Directory
d---s            System, Directory
d---- Directory, NotContentIndexed
d----        Directory, Compressed
la---                      Archive
-a---                      Archive
lar--            ReadOnly, Archive
-a---          Archive, Compressed

There's also a handy program for that called NTFSLinksView.

Edit: there's also SageLinks, this one checks the validity too.