Check if nxsconfig mysql database exists on TANGO HOST

The nxsconfig database is created on each TANGO HOST. It is required by NXSConfigServer. In oder to check if required mysql db exists on the unix console of tango host type

haspp09% mysql -e "show databases;"
+--------------------+
| Database           |
+--------------------+
| information_schema |
| nxsconfig          |
| tango              |
+--------------------+

which displays available mysql databases. The NeXus Component database name usually starts with nxsconfig, e.g. nxsconfig, nxsconfig_2.

It contains components, datasources and properties tables, i.e.:

haspp09% mysql -e "use nxsconfig; show tables;"
+---------------------+
| Tables_in_nxsconfig |
+---------------------+
| components          |
| datasources         |
| properties          |
+---------------------+