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Full Discussion: Tailing and counting lines
Top Forums Shell Programming and Scripting Tailing and counting lines Post 302853677 by bartus11 on Sunday 15th of September 2013 04:33:11 PM
Old 09-15-2013
Here is what I came up with:
In one terminal window run this:
Code:
tail -f /var/log/syslog > /tmp/syslog.tmp

In another run this:
Code:
while true; do clear; grep -c FATAL /tmp/syslog.tmp; sleep 1; done

This User Gave Thanks to bartus11 For This Post:
 

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PMDARSYSLOG(1)						       Performance Co-Pilot						    PMDARSYSLOG(1)

NAME
pmdarsyslog - rsyslog (reliable and extended syslog) PMDA DESCRIPTION
pmdarsyslog is a Performance Metrics Domain Agent (PMDA) which exports metric values from the rsyslogd(8) server. Further details about rsyslog can be found at http://www.rsyslog.com/. INSTALLATION
If you want access to the names and values for the rsyslog performance metrics, do the following as root: # cd $PCP_PMDAS_DIR/rsyslog # ./Install If you want to undo the installation, do the following as root: # cd $PCP_PMDAS_DIR/rsyslog # ./Remove pmdarsyslog is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is installed or removed. In order to use this agent, rsyslog stats gathering must be enabled. This is done by adding the lines: $ModLoad impstats $PStatsInterval 5 # log every 5 seconds syslog.info |/var/log/pcp/rsyslog/stats to your rsyslog.conf(5) configuration file after installing the PMDA. Take care to ensure the syslog.info messages do not get logged in any other file, as this could unexpectedly fill your filesystem. Syntax useful for this is syslog.!=info for explicitly excluding these. FILES
/var/log/pcp/rsyslog/stats named pipe containing statistics exported from rsyslog, usually created by the PMDA Install script. $PCP_PMDAS_DIR/rsyslog/Install installation script for the pmdarsyslog agent $PCP_PMDAS_DIR/rsyslog/Remove undo installation script for the pmdarsyslog agent $PCP_LOG_DIR/pmcd/rsyslog.log default log file for error messages from pmdarsyslog SEE ALSO
pmcd(1), rsyslog.conf(5), rsyslogd(8). 3.8.10 Performance Co-Pilot PMDARSYSLOG(1)
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