Real time alert template.


This module executes custom scripts upon arrival of objects or updates. It provides as template for custom modification and is not a replacement for scvoice.

There are four possible trigger mechanisms for calling scripts:

  • Event creation/update,

  • Amplitude creation,

  • Origin creation (with status = preliminary),

  • Pick creation with filter for phase hint.


People started modifying scvoice to send emails or other alert messages. Then, the name scvoice is then just wrong. If you want to customize scvoice, use scalert instead.

Module Configuration


scalert inherits global options.


Default: false

Type: boolean

Treat an event as new event when it is seen the first time.


Type: list:string

List of agency IDs to consider picks and origins. The agency ID is extracted from the pick or the preferred origin of the event and compared with the configured IDs.

unset (=): use agencyID defined in global, default

empty list (=""): all agencies are allowed


Type: list:string

List of authors to consider picks and origins. The author is extracted from the pick or the preferred origin of the event and compared with the configured authors. empty list (=""): all authors are allowed


Type: string

The default message string for the event-script is "earthquake, [HOURS] hours [MINS] minutes ago, [DESC], magnitude [MAG], depth [DEP] kilometers" whereas [DESC] is the string given in the event.description attribute. This string can be overwritten using one of the following options. There are three placeholders that can be used: @region@, @dist@ and @poi@. Example: "@region@, @dist@ kilometers from @poi@ away".


Default: 20

Type: double

Unit: deg

When using the nearest point of interest (city) as part of the message string, specify the maximum distance in degrees from the event. Any point of interest farther away will be ignored.


Default: 50000

Type: double

Minimum population for a city to become a point of interest.


Type: string

The script to be called when a pick arrives. Network-, station code, pick publicID are passed as parameters $1, $2, $3.


Type: string

The script to be called when an amplitude arrives. Network-, station code, amplitude and amplitude public ID are passed as parameters $1, $2, $3, $4.


Type: string

The script to be called when a preliminary origin arrives. Latitude and longitude are passed as parameters $1 and $2.


Type: string

The script to be called when an event has been declared. The message string, a flag (1=new event, 0=update event), the EventID, the arrival count and the magnitude (optional when set) are passed as parameters $1, $2, $3, $4 and $5.


constraints.* Constraints for executing scripts


Default: P,S

Type: list::string

Start the pick script only when the phaseHint of the received pick has one of the value(s).


Type: list::string

Start the pick script only when the stream (NET.STA.LOC.CHA) of the received pick belongs to the list of stream IDs. If empty, all picks are accepted, otherwise only the ones whose stream ID matches one of the entry of this comma separated list. Each entry must follow the NET.STA.LOC.CHA format, but the special characters ? * | ( ) are also accepeted. E.g. "CH.*,GR.STA??.*,*.*.*.HH?,*.*.*.??(Z|1)"


Default: 1

Type: int

Start the pick script only when a minimum number of phases ‘phaseNumber’ is received within ‘phaseInterval’.


Default: 1

Type: int

Unit: s

Start the pick script only when a minimum number of phases ‘phaseNumber’ is received within ‘phaseInterval’.

Command-Line Options

scalert [options]


-h, --help

Show help message.

-V, --version

Show version information.

--config-file arg

Use alternative configuration file. When this option is used the loading of all stages is disabled. Only the given configuration file is parsed and used. To use another name for the configuration create a symbolic link of the application or copy it. Example: scautopick -> scautopick2.

--plugins arg

Load given plugins.

-D, --daemon

Run as daemon. This means the application will fork itself and doesn’t need to be started with &.

--auto-shutdown arg

Enable/disable self-shutdown because a master module shutdown. This only works when messaging is enabled and the master module sends a shutdown message (enabled with --start-stop-msg for the master module).

--shutdown-master-module arg

Set the name of the master-module used for auto-shutdown. This is the application name of the module actually started. If symlinks are used, then it is the name of the symlinked application.

--shutdown-master-username arg

Set the name of the master-username of the messaging used for auto-shutdown. If "shutdown-master-module" is given as well, this parameter is ignored.


Overrides configuration parameter firstNew.


--verbosity arg

Verbosity level [0..4]. 0:quiet, 1:error, 2:warning, 3:info, 4:debug.

-v, --v

Increase verbosity level (may be repeated, eg. -vv).

-q, --quiet

Quiet mode: no logging output.

--component arg

Limit the logging to a certain component. This option can be given more than once.

-s, --syslog

Use syslog logging backend. The output usually goes to /var/lib/messages.

-l, --lockfile arg

Path to lock file.

--console arg

Send log output to stdout.


Execute in debug mode. Equivalent to --verbosity=4 --console=1 .

--log-file arg

Use alternative log file.


-u, --user arg

Overrides configuration parameter connection.username.

-H, --host arg

Overrides configuration parameter connection.server.

-t, --timeout arg

Overrides configuration parameter connection.timeout.

-g, --primary-group arg

Overrides configuration parameter connection.primaryGroup.

-S, --subscribe-group arg

A group to subscribe to. This option can be given more than once.

--content-type arg

Overrides configuration parameter connection.contentType.

--start-stop-msg arg

Set sending of a start and a stop message.



List all supported database drivers.

-d, --database arg

The database connection string, format: service://user:pwd@host/database. "service" is the name of the database driver which can be queried with "--db-driver-list".

--config-module arg

The config module to use.

--inventory-db arg

Load the inventory from the given database or file, format: [service://]location .


Do not use the database at all


--amp-type arg

Specify the amplitude type to listen to.

--amp-script arg

Overrides configuration parameter scripts.amplitude.

--alert-script arg

Overrides configuration parameter scripts.alert.

--event-script arg

Overrides configuration parameter scripts.event.


--max-dist arg

Overrides configuration parameter poi.maxDist.

--min-population arg

Overrides configuration parameter poi.minPopulation.


-E, --eventid arg

Specify event ID that is used for testing. After running the alert scripts scvoice will exit.