system_information.sh
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#!/bin/dash
##
# This creates function that will gather some system informations
# and propagate them as environment variables.
#
. ./utils.sh
##
# start guessing the system type via uname and export it.
#
get_host_info() {
OS="$(${UNAME} -o)"
KERNEL="$(${UNAME} -s)"
VERSION="$(${UNAME} -r)"
PLATFORM="$(${UNAME} -m)"
HOSTNAME="$(${UNAME} -n)"
CLASSES="$(${ECHO} -e "${OS}\n${KERNEL}\n${VERSION}\n${PLATFORM}\n${HOSTNAME}" |\
${SORT} -u | ${TR} "\n" " ")"
export OS KERNEL VERSION PLATFORM HOSTNAME CLASSES
}
##
# if we are on a linux try to figure out wich distribution we are
# running.
# First look what kind of realease file we have:
#
# 00 01 - Novell SuSE ---> /etc/SuSE-release
# 00 02 - Red Hat ---> /etc/redhat-release, /etc/redhat_version
# 00 04 - Fedora ---> /etc/fedora-release
# 00 08 - Slackware ---> /etc/slackware-release, /etc/slackware-version
# 00 10 - Debian ---> /etc/debian_release, /etc/debian_version
# 00 20 - Mandrake ---> /etc/mandrake-release
# 00 40 - Yellow dog ---> /etc/yellowdog-release
# 00 80 - Sun JDS ---> /etc/sun-release
# 01 00 - Solaris/Sparc ---> /etc/release
# 02 00 - Gentoo ---> /etc/gentoo-release
#
# Here I follow a pessimistic way because I prefere to have no
# identification at all over a wrong one...so I check for all these files.
# If I can't find any or find multiple of them I assume this system
# as unidentified. Anyway when I found one I still check the content...
# Here I need some help as I don't know the valid content of these files.
# For now I assume that at least the name of the distribution is in
# the file.
#
get_dist_info() {
[ -z "${KERNEL}" ] && get_host_info
if [ "Linux" = "${KERNEL}" ]
then
local SUSE=1
local REDHAT=2
local FEDORA=4
local SLACKWARE=8
local DEBIAN=16
local MANDRAKE=32
local YELLOWDOG=64
local SUNJDS=128
local GENTOO=256
local SOLARIS=512
local LAST=${SOLARIS}
local CHK=$((SUSE|REDHAT|FEDORA|SLACKWARE|DEBIAN|MANDRAKE|\
YELLOWDOG|SUNJDS|GENTOO|SOLARIS))
eval local FILES_${SUSE}=\'/etc/SuSE-release\'
eval local FILES_${REDHAT}=\'/etc/redhat-release /etc/redhat_version\'
eval local FILES_${FEDORA}=\'/etc/fedora-release\'
eval local FILES_${SLACKWARE}=\'/etc/slackware-release /etc/slackware-version\'
eval local FILES_${DEBIAN}=\'/etc/debian_release /etc/debian_version\'
eval local FILES_${MANDRAKE}=\'/etc/mandrake-release\'
eval local FILES_${YELLOWDOG}=\'/etc/yellowdog-release\'
eval local FILES_${SUNJDS}=\'/etc/sun-release\'
eval local FILES_${GENTOO}=\'/etc/gentoo-release\'
eval local FILES_${SOLARIS}=\'/etc/release\'
local CUR=1
while [ ${CUR} -le ${LAST} ]
do
local DIR
eval local FILES=\"\${FILES_${CUR}}\"
for DIR in ${FILES}
do
[ -f ${DIR} ] || CHK=$((CHK&~CUR))
done
CUR=$((CUR*2))
done
DIST="Unknown"
[ ${CHK} -eq ${SUSE} ] && DIST="Suse"
[ ${CHK} -eq ${REDHAT} ] && DIST="Redhat"
[ ${CHK} -eq ${FEDORA} ] && DIST="Fedora"
[ ${CHK} -eq ${SLACKWARE} ] && DIST="Slakware"
[ ${CHK} -eq ${DEBIAN} ] && DIST="Debian"
[ ${CHK} -eq ${MANDRAKE} ] && DIST="Mandrake"
[ ${CHK} -eq ${YELLOWDOG} ] && DIST="Yellowdog"
[ ${CHK} -eq ${SUNJDS} ] && DIST="Sun"
[ ${CHK} -eq ${GENTOO} ] && DIST="Gentoo"
[ ${CHK} -eq ${SOLARIS} ] && DIST="Solaris"
if [ 'Unknown' != "${DIST}" ]
then
eval ${GREP} -iq ${DIST} \${FILES_${CHK}} || DIST="Unknown"
fi
CLASSES="${CLASSES}${DIST} "
else
DIST="${OS}"
fi
export DIST CLASSES
}
##
# autorun this if sourced.
#
[ -z "${DIST}" ] && get_dist_info
case "${OS}" in
GNU/*)
include_once gnu_information.sh;;
esac
# vim: set ts=4 sw=4: