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Full Discussion: Reading from a File and Using as an Input variable
Top Forums Shell Programming and Scripting Reading from a File and Using as an Input variable Post 302456344 by baraghun on Friday 24th of September 2010 01:41:12 AM
Old 09-24-2010
Reading from a File and Using as an Input variable
I need to know how the the string constant from Input File should be read and provide as input data for the script .

Code:
INPUT FILE

CONST        VARIABLE
myname=/root/dir/syslog/myname1
myname=/root/dir/syslog/myname2
myname=/root/dir/syslog/myname3 

urname=/root/dir/syslog/urname1
urname=/root/dir/syslog/urname2
urname=/root/dir/syslog/urname3

........
.........
;;;;;;;

nthname =/root/dir/syslog/ntname1

I would like to read some constant values from the file and feed that as an input to the script, something like this.

Code:
./myscript urname

From above syntax, Im just using the Constant String from the input text, but script should perform actions on all the instances of variable string mapped to the constant from input text. Can some one provide me the method how to call this . Do i need to write any functions for this?
 

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LEARN ABOUT CENTOS

pmdarsyslog

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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