Script to determine operation system version

determine-os.sh

#!/bin/bash

# Determine OS platform
UNAME=$(uname | tr "[:upper:]" "[:lower:]")
# If Linux or darwin, try to determine specific distribution
if [ "$UNAME" == "linux" ] ; then
    # If available, use LSB to identify distribution
    if [ -f /etc/lsb-release -o -d /etc/lsb-release.d ]; then
        export DISTRO=$(lsb_release -i | cut -d: -f2 | sed s/'^\t'//)
        # Otherwise, use release info file
    else
        export DISTRO=$(ls -d /etc/[A-Za-z]*[_-][rv]e[lr]* | grep -v "lsb" | cut -d'/' -f3 | cut -d'-' -f1 | cut -d'_' -f1)
    fi
    echo $DISTRO
fi

if [ "$UNAME" == "darwin" ] ; then
    echo $UNAME 
    echo "Na mac be this"
fi

# For everything else (or if above failed), just use generic identifier
[ "$DISTRO" == "" ] && export DISTRO=$UNAME
unset UNAME