Seislog for Linux Seismic Data Acquisition System

 
Simplest way to start SEISLOG automatically at boot time. 
Edit the /etc/rc.d/boot.local file. You must be superuser to do this. 
(For Linux Ubuntu the file is: /etc/rc.local) 
Add the complete start command for your configuration, for example: 
/home/seismo/SLG/PRO/srt 
–d DIG_XXX –c CHA_XXX –t /home/seismo & 
The ampersand ‘
&
’ at the end is important. The ampersand puts SEISLOG in 
the background and continues the boot procedure. 
The description below works for SuSE Linux, but should be the same or 
similar for other distributions. 
 

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18 
8 SEISLOG SERVER AND SOCKETS 
SEISLOG is designed to work without a graphics user interface. However, 
some monitoring functions are available through a server program that can 
communicate with other programs through sockets. This communication can 
take place on the machine where SEISLOG is installed or through the 
Internet. This of course, assumes that both the SEISLOG machine and the 
user machine are both connected to the Internet. 
The server program is part of the distribution. SEISLOG can work without the 
server, but the user will then not have access to the monitoring functions. 
Most of the server functions are multi-client, i.e. the functions can be started 
by several clients at the same time. 
By default, the server is started when SEISLOG is started.
The SEISLOG server responds to different requests from clients. The most 
important server function is to transmit packets of data in a well defined format 
to other programs or clients. The SEISLOG server emulates the LISS server 
(USGS) and transmits data packets in MiniSeed format to clients that request 
data. This format is recognized by Earthworm and SeisComp, and data from 
SEISLOG can therefore be input to these systems. It is important to know that 
the protocol is one way and re-transmission is not possible. However, on 
stable Internet connections, the data loss is minimal. The clients may also run 
on the same system as the server, which means very stable communication. 
Data from the server may also be requested for plotting by the utility 
LISSPLOT that is described in section 9. LISSPLOT can connect locally or 
remotely to any station in the GSN network or to any SEISLOG Linux system.