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Full Discussion: Script for ping on Background Process
Top Forums Shell Programming and Scripting Script for ping on Background Process Post 302203986 by teigipo on Tuesday 10th of June 2008 10:08:54 AM
Old 06-10-2008
Script for ping on Background Process
Hi All,
I'm doing one script on Juniper router where you have one FreeBSD Shell:
Is pinging from time to time one ethernet port of othere router and in case of fail is blocking one port entering in CLI and doing some command:
If I run this script all is working perfectly, but if I run in Backgroung using "&" is blocked on ping (ping -c1 $RemoteIPAddress) . Could you help me to solve this problem?

Many thanks
giancarlo


Code:
#!/bin/sh

# Name of Script that will be show in log file ##############################################################
ScriptName='CheckLinkScript_Ze2-NS2'
# Remote Interface IP Address ##############################################################
RemoteIPAddress="10.15.100.222"
# Local Port connected to Remote IP Address ##############################################################
LocalPort="fe-2/0/1.23"
# Variable used for show time on log file ##############################################################
RIGHT_NOW=$(date +"%x %r %Z")
# Time between ping to Remote IP Address ##############################################################
SleepingTime='3'
# When interface is down after RentryTime will be sut up and Attemp of ping will be performed ##############
RetryTime='1000'


subping ()
{
echo ---$RIGHT_NOW---$ScriptName---- PERFORMING LINK CHECK RemoteIP $RemoteIPAddress LocalPort $LocalPort -- >> /var/log/messages
ping -c1 $RemoteIPAddress
if [ $? -ne 0 ]

# when is down #################################################################################################### ##
then

echo ---$RIGHT_NOW---$ScriptName---- Remote IP address $RemoteIPAddress unreachable -- > /var/log/messages
echo ---$RIGHT_NOW---$ScriptName---- Shutting down port &LocalPort -- > /var/log/messages
cli <<END_SCRIPT
edit
set interfaces $LocalPort disable

# shut interface ####################################################################################################


commit
top
exit
exit
echo ---$RIGHT_NOW---$ScriptName---- Port &LocalPort Admin DOWN -- > /var/log/messages
END_SCRIPT

sleep $RetryTime

# after sleep try to put up interface and try again to ping ##########################################################

echo ---$RIGHT_NOW---$ScriptName---- Attempt to recover link on port &LocalPort -- > /var/log/messages
cli <<END_SCRIPT
edit
dele interfaces $LocalPort disable
commit
top
exit
exit
END_SCRIPT



# when is up #################################################################################################### #####
else
echo ---$RIGHT_NOW---$ScriptName---- LINK CHECK Performed RemoteIP $RemoteIPAddress : OK -- > /var/log/messages
fi
}


while [ true ]
do
subping

sleep $SleepingTime



done

 

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LEARN ABOUT CENTOS

doveadm-log

DOVEADM-LOG(1)							      Dovecot							    DOVEADM-LOG(1)

NAME

       doveadm-log - Locate, test or reopen Dovecot's log files

SYNOPSIS

       doveadm [-Dv] log errors [-s min_timestamp]
       doveadm [-Dv] log find [directory]
       doveadm [-Dv] log reopen
       doveadm [-Dv] log test

DESCRIPTION

       The  doveadm  log commands are used to locate and reopen the log files of dovecot(1).  It's also possible to test the configured targets of
       the *log_path settings.

OPTIONS

       Global doveadm(1) options:

       -D     Enables verbosity and debug messages.

       -v     Enables verbosity, including progress counter.

COMMANDS

   log errors
       doveadm log errors [-s min_timestamp]

       The log errors command is used to show the last	- up to 1,000 - errors and warnings.  If no output is generated, no errors  have  occurred
       since the last start.

       -s min_timestamp
	      An  integer  value, representing seconds since the epoch - also known as Unix timestamp.	When a min_timestamp was given, doveadm(1)
	      will only show errors occurred since that point in time.

   log find
       doveadm log find [directory]

       The log find command is used to show the location of the log files, to which dovecot(1) sends its log messages.	 If  dovecot(1)  logs  its
       messages  through  syslogd(8)  and doveadm(1) could not find any log files, you can specify the directory where your syslogd writes its log
       files.

   log reopen
       doveadm log reopen

       This command causes doveadm to reopen all log files, configured in the log_path, info_log_path and debug_log_path settings.  These settings
       are configured in /etc/dovecot/conf.d/10-logging.conf.
       This is for example useful after manually rotating the log files.

   log test
       doveadm log test

       This command causes doveadm to write the message "This is Dovecot's priority log (timestamp)" to the configured log files.  The used prior-
       ities are: debug, info, warning, error and fatal.

EXAMPLE

       This example shows how to locate the log files used by dovecot(1).

       doveadm log find
       Looking for log files from /var/log
       Debug: /var/log/dovecot.debug
       Info: /var/log/mail.log
       Warning: /var/log/mail.log
       Error: /var/log/mail.log
       Fatal: /var/log/mail.log

REPORTING BUGS

       Report bugs, including doveconf -n output, to the Dovecot Mailing List <dovecot@dovecot.org>.  Information about reporting bugs	is  avail-
       able at: http://dovecot.org/bugreport.html

SEE ALSO

       doveadm(1)

Dovecot v2.2							    2013-11-24							    DOVEADM-LOG(1)
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