osi

#!/bin/sh
# vim: ts=4
#
# Copyright (c) 2010-2013 Benjamin Schweizer.
#
# Abstract
# ~~~~~~~~
# Detects OS name+version/arch
#
# Authors
# ~~~~~~~
# Benjamin Schweizer, http://benjamin-schweizer.de/contact
#
# Changes
# ~~~~~~~
# 2013-07-21, benjamin: added linux-lxc
# 2013-02-27, benjamin: reordered linux version
# 2012-07-02, benjamin: added virtualpc+xen detection
# 2011-07-11, benjamin: default model
# 2011-02-17, benjamin: vm cleanups
# 2011-02-16, benjamin: improved sunos support
# 2010-06-01, benjamin: added sunos support
# 2010-04-07, benjamin: changed vm detection, added openfiler support
# 2010-03-11, benjamin: debian testing fix
# 2010-03-10, benjamin: added freebsd hypervisor detection
# 2010-03-09, benjamin: added linux hypervisor detection
# 2010-03-02, benjamin: ubuntu fix
# 2010-02-25, benjamin: rewrite
# 2010-02-17, benjamin: initial release
#
# Todo
# ~~~~
# - testing on various os types
#

NAME=`uname -s`
VERSION="Unknown"
ARCH=`uname -m`
MODEL=""
NUMCORES=0
MEMORY=0    # gigs

case "$NAME" in
    Darwin)
        NAME=`sw_vers -productName`
        VERSION=`sw_vers -productVersion`
        test "$ARCH" = "Power Macintosh" && ARCH="ppc"
        ;;
    Linux)
        while true; do # ifs in goto style;)
        test "$ARCH" = 'unknown' && ARCH=`uname -m`
        test -f /etc/debian_version && {
            NAME="Debian"
            VERSION=`cat /etc/debian_version`
            break
        }
        test -f /etc/redhat-release && {
            NAME=`head -1 /etc/redhat-release | sed -e "s/[ (]*[0-9].*//g" | sed -e "s/ release//g"`
            VERSION=`head -1 /etc/redhat-release | sed -e "s/(.*)//g" | sed -e "s/[^0-9.]//g"`
            break
        }
        test -f /etc/distro-release && {
            NAME=`head -1 /etc/distro-release | sed -e "s/[ (]*[0-9].*//g"`
            VERSION=`head -1 /etc/distro-release | sed -e "s/(.*)//g" | sed -e "s/[^0-9.]//g"`
            break
        }
        test -f /etc/SuSE-release && {
            NAME=`head -1 /etc/SuSE-release | sed -e "s/[ (]*[0-9].*//g"`
            VERSION=`cat /etc/SuSE-release | grep -E "^VERSION|^PATCHLEVEL" | sed -e "s/[^0-9.]//g" | xargs printf "%d.%d"`
            break
        }
        which lsb_release > /dev/null 2>&1 && {
            NAME=`lsb_release -d | cut -f2 | sed -e "s/[ (]*[0-9].*//g"`
            VERSION=`lsb_release -r | cut -f2`
            break
        } 
        break
        done

        NAME=`echo "$NAME" | sed -e "s/SUSE Linux Enterprise Server.*/SLES/g"`
        NAME=`echo "$NAME" | sed -e "s/Red Hat Enterprise Linux.*/RHEL/g"`
        NAME=`echo "$NAME" | sed -e "s/CentOS.*/CentOS/g"`
        NAME=`echo "$NAME" | sed -e "s/Debian.*/Debian/g"`
        MODEL=" (unknown)"
        grep "hypervisor" /proc/cpuinfo > /dev/null && MODEL=" (virtual)"
        test -d /proc/xen && MODEL=" (Xen)"
        grep "QEMU Virtual CPU" /proc/cpuinfo > /dev/null && MODEL=" (QEmu)"
        cat /proc/1/environ 2>&1 | grep "container=lxc" > /dev/null && MODEL=" (lxc)"
        which dmidecode > /dev/null 2>&1 && {
            MODEL=""
            dmidecode -t system 2> /dev/null | grep VMware > /dev/null && MODEL=" (VMWare)"
            dmidecode -t system 2> /dev/null | grep "Microsoft Corporation" > /dev/null && MODEL=" (VirtualPC)"
            dmidecode -t system 2> /dev/null | grep Parallels > /dev/null && MODEL=" (Parallels)"
            dmidecode -t bios 2> /dev/null | grep QEMU > /dev/null && MODEL=" (QEmu)"
        }
        NUMCORES=`grep processor /proc/cpuinfo | wc -l`
        MEMORY=$(( (`grep MemTotal /proc/meminfo | sed -e "s/[^0-9]*//g"` + 512*1024) / 1024 / 1024))
        ;;
    FreeBSD)
        NAME="FreeBSD"
        VERSION=`uname -r | sed -e "s/-RELEASE-p/./g"`
        NUMCORES=`sysctl hw.ncpu | cut -c 10-`
        MEMORY=$(( (`sysctl hw.physmem | sed -e "s/[^0-9]*//g"` + 512*1024*1024) / 1024/1024/1024))
        sysctl hw.model | grep "QEMU" > /dev/null && MODEL=" (QEmu)"
        ;;
    SunOS)
        NAME="SunOS"
        VERSION=`uname -r`
        test `zonename` = "global" || MODEL=" (zone)"
        ;;
esac


echo "$NAME $VERSION/$ARCH$MODEL/$NUMCORES cpu cores/$MEMORY GB memory"

# eof.