What linux cli command can I use to search for a file with Erica in the filename on all shares or disks?

Quickie:

# find /mnt/user -name '*Erica*'

will walk all the user shares

# for f in /mnt/disk[0-9]* /mnt/cache; do find $f -name '*Erica*'; done

will walk all the disks including the cache

And finally,

# find /mnt -name '*Erica*'

will walk all disks shares, mounted unassigned devices and what not