10-01-2012
Linux Sort Command
Hey Don I think your right. I used that solution first but I felt it was too trivial initially. Now thinking about it again, I definitely think I read into the question a bit much. Thank you for your help. @bartus11 I will definitely try your script again and or use it for further reference. Thanks a lot.
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Hello! Can anybody explain in laymen terms what the (+) option in the sort command for Linux does? Please.
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Hi to all.
I'm trying to sort this with the Unix command sort.
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user2:12345679:4.5:3.5:8:1:3:2
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cat a
.a
ba
.b
bb
.c
bc
sort a
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.b
ba
bb
bc
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I have an input like
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LEARN ABOUT CENTOS
pmdatrivial
PMDATRIVIAL(1) General Commands Manual PMDATRIVIAL(1)
NAME
pmdatrivial - trivial performance metrics domain agent (PMDA)
SYNOPSIS
$PCP_PMDAS_DIR/trivial/pmdatrivial [-d domain] [-l logfile] [-U username]
DESCRIPTION
pmdatrivial is the simplest possible Performance Metrics Domain Agent (PMDA) which exports a single performance metric, the time in seconds
since the 1st of January, 1970.
The trivial PMDA is shipped as source code and is designed to be an aid for PMDA developers.
A brief description of the pmdatrivial 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 trivial.log is written in the current directory of pmcd(1) when pmdatrivial 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 trivial performance metrics, do the following as root:
# cd $PCP_PMDAS_DIR/trivial
# ./Install
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/trivial
# ./Remove
pmdatrivial 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 pmdatrivial
$PCP_PMDAS_DIR/trivial/help
default help text file for the trivial metrics
$PCP_PMDAS_DIR/trivial/Install
installation script for the pmdatrivial agent
$PCP_PMDAS_DIR/trivial/Remove
undo installation script for the pmdatrivial agent
$PCP_LOG_DIR/pmcd/trivial.log
default log file for error messages and other information from pmdatrivial
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), pmdasample(1), pmdasimple(1), pmdatxmon(1) and PMDA(3).
Performance Co-Pilot PCP PMDATRIVIAL(1)