Shell script for gathering facts from Unix systems.

facts.sh

#!/bin/sh

# Get the total memory in kB
if [ -f /bin/esxcli ]; then
    MEM=$(esxcli hardware memory get | grep Physical | awk '{printf("%d", $3/1000)}')
elif [ -f /proc/meminfo ]; then
    MEM=$( (grep MemTotal /proc/meminfo 2>/dev/null || echo 'x unknown') | awk '{print $2}')
else
    MEM='unknown'
fi

# Get the number of CPUs
if [ -f /proc/cpuinfo ]; then
    CPU=$(cat /proc/cpuinfo | egrep '^processor' | wc -l)
else
    CPU='unknown'
fi

# Determine distro and version
if [ -f /etc/os-release ]; then
    . /etc/os-release
    DISTRO=$ID
    VERSION=$VERSION_ID
elif [ -f /etc/redhat-release ]; then
    TMP_DIST=$(cat /etc/redhat-release | sed -r 's/^(.{6}).*/\1/' | tr 'A-Z' 'a-z')
    VERSION=$(cat /etc/redhat-release | sed -r 's/.*\ ([0-9]).*\ \(.+\)\s*$/\1/')

    if [ "$TMP_DIST" == 'centos' ]; then
        DISTRO=$TMP_DIST
    elif [ "$TMP_DIST" == 'red ha' ]; then
        DISTRO='redhat'
    else
        DISTRO='unknown'
    fi
elif [ -f /etc/debian_version ]; then
    DISTRO='debian'
    VERSION='unknown'
else
    DISTRO=$(uname -s)
    VERSION=$(uname -r)
fi

# Get the default IP
if [ -f /sbin/ip ]; then
    DEFAULT_IFACE=$(/sbin/ip route | grep '^default' | sed -r 's/.*\ dev\ ([a-z0-9]+)\ .*/\1/' | head -n1)
    IP=$(/sbin/ip addr show dev "$DEFAULT_IFACE" | grep 'inet ' | head -n1 | awk '{print $2}' | sed 's,/.*,,')
fi

# Get the hostname
HOST=$(hostname -f | tr 'A-Z' 'a-z' 2>/dev/null || hostname -f)

# Print the results
echo "$HOST,$IP,$DISTRO,$VERSION,$CPU,$MEM"