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#!/bin/bash
#------------------------------------------------------------------------------
# ========= |
# \\ / O peration | Version: 4.1
# \\ / A nd | Web: http://www.foam-extend.org
# \\/ M anipulation | For copyright notice see file Copyright
#------------------------------------------------------------------------------
# License
# foam-extend is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# foam-extend is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
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#
# Script
# foamGetSystemInfo
#
# Description
# return system information about running host/system
#
# Author:
# Martin Beaudoin, Hydro-Quebec, (2013)
#
#------------------------------------------------------------------------------
usage()
{
while [ "$#" -ge 1 ]; do echo "$1"; shift; done
cat<<USAGE
usage: ${0##*/} [OPTION]
options:
-nbrCores return the number of cores present
-osInfo [default] return operating system information
* return system information about the running host/system.
USAGE
exit 1
}
# Basic operating system information
getOperatingSystemInfo()
{
echo `uname -a`
}
# Number of cores
getNbrCores()
{
# Minimal number of cores. Can be as low as 1 on virtual machines
nbrCores=1
# First choice above all: using lstopo from the hwloc package
if command -v lstopo >/dev/null; then
nbrCores=`lstopo --of console | grep -c Core`
else
# Using some architecture specific heuristics
case `uname -s` in
Linux)
# Warning: this will be wrong if Hyperthreading is enable
nbrCores=`grep -c processor /proc/cpuinfo`
;;
Darwin)
nbrCores=`sysctl -n hw.physicalcpu`
;;
esac
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fi
echo $nbrCores
}
# If no options present, return basic information on operating system
if [ "$#" -eq 0 ]
then
getOperatingSystemInfo
exit
fi
# parse options
while [ "$#" -gt 0 ]
do
case "$1" in
-h | -help)
usage
;;
-osInfo)
getOperatingSystemInfo
shift
;;
-nbrCores)
getNbrCores
shift
;;
*)
usage "unknown option/argument: '$*'"
;;
esac
done
#------------------------------------------------------------------------------