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Full Discussion: export variable not working after su
Top Forums Shell Programming and Scripting export variable not working after su Post 302690965 by sasiharitha on Thursday 23rd of August 2012 04:33:56 PM
Old 08-23-2012
I am using Redhat Linux 2.6.32-220.4.1.el6.x86_64 and is logged in as root


The final idea is to login as root and su to some other id and run installation scripts. Those installation script need to access some variables and hence trying to set those.

As I mentioned, its not only failing in setting variables but also thing like below are also not working

Code:
for filestring in `cat $SRCDIR/install.control | grep -v "^#"`
do
echo "FILESTRING=${filestring}"
done

Can you please advise any other technique to accomplish this?
Last edited by methyl; 08-23-2012 at 06:34 PM.. Reason: correct spelling and typos for readability ... and code tags
 

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LEARN ABOUT CENTOS

pmdalmsensors

PMDALMSENSORS(1)					      General Commands Manual						  PMDALMSENSORS(1)

NAME

       pmdalmsensors - Linux hardware monitoring performance metrics domain agent (PMDA)

SYNOPSIS

       $PCP_PMDAS_DIR/lmsensors/pmdalmsensors [-d domain] [-l logfile] [-U username]

DESCRIPTION

       pmdalmsensors  is  a  Performance Metrics Domain Agent (PMDA) which extracts performance metrics describing the state of hardware using the
       lm-sensors on compatible motherboards.

       The lmsensors PMDA exports metrics that measure fan speeds, core temperatures and voltage levels.

       A brief description of the pmdalmsensors command line options follows:

       -d   It is absolutely crucial that the performance metrics domain number specified here is unique and consistent.  That is,  domain  should
	    be different for every PMDA on the one host, and the same domain number should be used for the same PMDA on all hosts.

       -l   Location  of  the log file.  By default, a log file named lmsensors.log is written in the current directory of pmcd(1) when pmdalmsen-
	    sors is started, i.e.  $PCP_LOG_DIR/pmcd .	If the log file cannot be created or is not writable, output is written  to  the  standard
	    error instead.

       -U   User  account  under  which  to run the agent.  The default is the unprivileged "pcp" account in current versions of PCP, but in older
	    versions the superuser account ("root") was used by default.

INSTALLATION

       If you want access to the names, help text and values for the lmsensors performance metrics, do the following as root:

	    # cd $PCP_PMDAS_DIR/lmsensors
	    # ./Install

       If you want to undo the installation, do the following as root:

	    # cd $PCP_PMDAS_DIR/lmsensors
	    # ./Remove

       pmdalmsensors 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.

FILES

       $PCP_PMCDCONF_PATH
		 command line options used to launch pmdalmsensors
       $PCP_PMDAS_DIR/lmsensors/help
		 default help text file for the lmsensors metrics
       $PCP_PMDAS_DIR/lmsensors/Install
		 installation script for the pmdalmsensors agent
       $PCP_PMDAS_DIR/lmsensors/Remove
		 undo installation script for the pmdalmsensors agent
       $PCP_LOG_DIR/pmcd/lmsensors.log
		 default log file for error messages and other information from pmdalmsensors

PCP ENVIRONMENT

       Environment  variables  with  the prefix PCP_ are used to parameterize the file and directory names used by PCP.  On each installation, the
       file /etc/pcp.conf contains the local values for these variables.  The $PCP_CONF variable may be used to specify an alternative	configura-
       tion file, as described in pcp.conf(5).

SEE ALSO

       PCPIntro(1), pmcd(1), pcp.conf(5) and pcp.env(5).

Performance Co-Pilot							PCP							  PMDALMSENSORS(1)
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