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Full Discussion: Monitoring a file - Basic Bash Question
Top Forums Shell Programming and Scripting Monitoring a file - Basic Bash Question Post 302414704 by Nolan- on Tuesday 20th of April 2010 08:17:42 PM
Old 04-20-2010
Java Monitoring a file - Basic Bash Question
*This is not homework I am new to UNIX and want to try this Monitoring a file demo*
*If this is the wrong forum please move it - im new to the forums*

$1 = the file to be monitored
$2 = the time for the file to sleep

If the file gets changed (using -nt) it will send my username mail saying its changed it. The problem im having is it goes into an endless loop, im just learning the while loop so im guessing its that. Also I dont understand the whole mail code - how do I input subject and stuff.

Code:
#!/bin/bash
if [ $# -eq 0 ] ; then
    echo "enter <file> <time>"
exit 1
fi

if [ ! -e $1 ] ; then
    echo " please enter an existing file"
exit 2
fi

if [ "$2" = "" ] ; then
    echo " no argument 2"
exit 3
fi

if [ $2 -lt 10 ] ; then 
    echo " please enter a number higher than 10"
exit 4
fi

while [ $2 -ge 10 ] ; do
if [ $1 -nt ] ; then
    sleep $2
    mail $LOGNAME
else
    echo "file unchanged"
fi
done
exit 0




 

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LEARN ABOUT HPUX

kcmond

kcmond(1M)																kcmond(1M)

NAME

       kcmond - EMS Kernel Tunable Monitor daemon

SYNOPSIS


		kcmond

DESCRIPTION

       The  kcmond  daemon  monitors  the consumption of kernel resources. It is an Event Monitoring Services (EMS - see ems(5)) monitor. The data
       collected by kcusage can be displayed by kcusage(1M).

       kcmond includes a resource dictionary file (/etc/opt/resmon/dictionary/kcmond_01.dict) which is used by EMS to identify resources for moni-
       toring.

       Users can control the monitoring of each kernel tunable by setting a percentage value for the consumption of that resource. For example, if
       the user sets a value of 75 for nproc, the Kernel Tunable Monitor will report an event when the number of  processes  reaches  75%  of  the
       nproc setting.

       The  kcalarm(1M) command is used to add, modify and delete kernel tunable alarms. The kcusage(1M) command is used to view data collected by
       kcmond. The kcweb(1M) command provides a Web-based, graphical user interface to control alarms and view usage data, including graphs of the
       usage data.

       kcmond is a light weight daemon that will exit after being idle for ten minutes.

SUPPORTED PARAMETERS

       For a complete list of the kernel tunables that can be monitored with this daemon, see the kcusage(1M) manpage.

DEPENDENCIES

       kcmond must be run by the registrar process of the Event Monitoring Service (EMS) and is not designed to be run from the command line.

AUTHORS

       was developed by Hewlett-Packard.

FILES

       Executable.

       The  resource dictionary for kcmond, describes the location (e.g. /system/kernel_tunables/nproc) of kernel tunables in the resource hierar-
       chy and references kcmond as the resource monitor.

       Log file for the entire Resource Monitor Framework, including kcmond. Any errors are logged here.

SEE ALSO

       kcalarm(1M), ems(5), kcusage(1M)

																	kcmond(1M)
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