I am trying to connect to the example database using
isc_attach_database on linux using Firebird 1.5 (libfbclient.so)
using the database name,
'/opt/firebird/examples/employee.fdb' or
'localhost:/opt/firebird/examples/employee.fdb'

and get the following error:

unable to complete network request to "C"
- failed to locate host machine
- the specified name in host file or domain name services was not
found

I am obviously using the wrong connection string. I cannot found
documentation regarding the correct connection string for Linux.

Any help would be much appreciated.

Thanks in advance.