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2 system log – Guralp Systems CMG-DCM build <10,000 User Manual

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Operator's Guide

From the command line interface, you can view the same information

by running libstatus­query:

eam999 ~ # libstatus-query
================================================================
2008-05-01T13:57:52Z: Good : System uptime
----------------------------------------------------------------
System has been up for approximately 4 days.

================================================================
2008-05-01T13:59:16Z: Unknown : GCF in: Port A
----------------------------------------------------------------
No blocks seen.

================================================================
2008-05-01T13:59:17Z: Good : GCF in: Port F
----------------------------------------------------------------
Last 5 minutes:
* 1532 blocks (5.1 per second).
* 0 naks (0.0 naks per second).

================================================================
2008-05-01T13:59:14Z: Good : NTP
----------------------------------------------------------------
NTP has locked the system clock.
Clock source is UDP/NTP.

================================================================
2008-05-01T13:44:11Z: Good : Removable disk 0000-0401
----------------------------------------------------------------
Filesystem type: vfat.
Size: 37.2GiB.
Free: 24.9GiB (66.9%).
Earliest entry: 2008091-gcfraw.

13.1.2 System Log

The most important source of diagnostic and debugging information is

the system log facility (“syslog”). This logs all messages from programs
and from the Linux kernel. At present, this can only be viewed from

the command line.

To view the system logs, you can use the tail, less, grep or vi 
commands to inspect the file

/var/log/messages

- older files are

available as

/var/log/messages.1

,

/var/log/messages.2

etc.

Use the following syntax to view the files:

tail /var/log/messages

Views the last few entries.

tail -f /var/log/messages

As above but, after printing the last ten lines of the file,

November 2010

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