beautypg.com

5 updating the dcm, Tamper lines, Over the internet – Guralp Systems CMG-DCM User Manual

Page 123

background image

Operator's guide

centred;

which, if any, of the channels are currently being calibrated (the

channel appears with a + if this is the case).

Tamper lines

The command tamper provides information about the current state of

the DCM tamper lines. Issued with no arguments, it will output the

status of all tamper lines once every 10 seconds. Including the -w

option causes it to exit after printing the status once only:

[root@dcm-87AD9C933DE1 ~]# tamper -w

Input State Last Closed (Low) Last Open (High)

0 open (never) Mon Jan 5 21:50:37 1970

1 open (never) Mon Jan 5 21:50:37 1970

2 open (never) Mon Jan 5 21:50:37 1970

3 open (never) Mon Jan 5 21:50:37 1970

4 open (never) Mon Jan 5 21:50:37 1970

5 open (never) Mon Jan 5 21:50:37 1970

6 open (never) Mon Jan 5 21:50:37 1970

7 open (never) Mon Jan 5 21:50:37 1970

8 closed (never) (never)

9 closed (never) (never)

10 closed (never) (never)

11 closed (never) (never)

12 closed (never) (never)

13 closed (never) (never)

14 closed (never) (never)

15 closed (never) (never)

The output of the tamper command is included on the Summary page

under

Actions on the DCM Web site.

8.5 Updating the DCM

Over the Internet

The easiest way to ensure that your DCM has all the latest software

packages is to update it over the Internet.

The DCM is provided with a simple command-line script, upgrade,

which checks for new versions of all packages in the distribution on
the Güralp Systems Web site and installs them as necessary. It also

rebuilds the configuration database to work with the new packages,
resets it, and reboots the machine.

Running upgrade will restore the DCM to its factory settings, so

make sure you will still be able to communicate with it before you
issue the command, either

December 2006

123