Bash – Unix – Identify Distribution (What OS Am I On)

Posted on By David Kittell

Unix Identification is a script that originated with VMWare but I have added some other systems to the script.

No Install Option

/bin/bash -c "$(curl -fsSL https://gitlab.com/Kittell-Projects/Unix/unixidentification/raw/master/UnixIdentification.sh)"

$ /bin/bash -c "$(curl -fsSL https://gitlab.com/Kittell-Projects/Unix/unixidentification/raw/master/UnixIdentification.sh)"
What details would you like to see?
 -a is for all details.
 -d is for full OS name with version.
 -r is for the release version of the OS
 -i is for the name of the distribution

Type your option (a, d, r, or i), followed by [ENTER]:

Install Option

if [ ! -d /opt/ ]
then
  mkdir -p /opt/
fi

sudo wget -P /opt/ wget https://gitlab.com/Kittell-Projects/Unix/unixidentification/raw/master/UnixIdentification.sh

Basic parameters of the script

  • No parameters passed you will be asked to type a,d,r,or i then press enter/return 
    $ bash /opt/UnixIdentification.sh
What details would you like to see?
 -a is for all details.
 -d is for full OS name with version.
 -r is for the release version of the OS
 -i is for the name of the distribution

Type your option (a, d, r, or i), followed by [ENTER]:
  • Parameter a (all details) passed 
    $ bash /opt/UnixIdentification.sh -a
Fedora
33
Fedora release 33 (Thirty Three)
  • Parameter d (detail) passed 
    $ bash /opt/UnixIdentification.sh -d
Fedora release 33 (Thirty Three)
  • Parameter r (release) passed 
    $ bash /opt/UnixIdentification.sh -r
33
  • Parameter i (distribution) passed 
    $ bash /opt/UnixIdentification.sh -i
Fedora

NOTE: This script sometimes does change so please reference the code on GitLab

#!/bin/bash

###############################################################################################
# PROGRAM:        UnixIdentification.sh
# DESCRIPTION:    Identify the UNIX operating system that you are on
#
# INITIAL CREDIT: UnixIdentification is a script that originated with VMWare but I have added
#                 some other systems to the script.
#
# Command line:   bash UnixIdentification.sh
###############################################################################################

# Variables - Begin
DISTRO_ID=""
DISTRO_RELEASE=""
DISTRO_DESC=""
# Variables - End

# Functions - Begin

unknown_os() {
    echo "Unfortunately, your operating system distribution and version are not supported by this script."
}

identify_distribution() {
    # Debian Based
    DISTRO_ID_UBUNTU=Ubuntu
    DISTRO_ID_KYLIN=UbuntuKylin
    DISTRO_ID_ZORIN=Zorin
    DISTRO_ID_RASPBIAN=Raspbian
    
    # Mac
    DISTRO_ID_DARWIN="Mac OSX (Darwin)"
    
    # Red Hat Based
    DISTRO_ID_CENTOS=CentOS
    DISTRO_ID_FEDORA=Fedora
    DISTRO_ID_RHEL_CLIENT=RedHatEnterpriseClient
    DISTRO_ID_RHEL_SERVER=RedHatEnterpriseServer
    DISTRO_ID_RHEL_WORKSTATION=RedHatEnterpriseWorkstation
    
    # Other
    DISTRO_ID_NEOKYLIN=" NeoKylin Linux Desktop"
    DISTRO_ID_SUSE="SUSE LINUX"
    DISTRO_ID_AWS="AWS"
    
    type lsb_release >/dev/null 2>&1
    if [ "$?" = "0" ]; then
        DISTRO_ID="$(lsb_release -is)"
        DISTRO_RELEASE="$(lsb_release -rs)"
        DISTRO_DESC="$(lsb_release -ds)"
        # OS Check - Debian - Begin
        elif [ -f /etc/lsb-release ]; then
        . /etc/lsb-release
        DISTRO_ID=$DISTRIB_ID
        DISTRO_DESC=$DISTRIB_DESCRIPTION
        DISTRO_RELEASE=$DISTRIB_RELEASE
        
        elif [ -f /etc/lsb-release ] && [ -z DISTRO_ID]; then
        DISTRO_ID=$(cat /etc/lsb-release | grep '^DISTRIB_ID' | cut -d '=' -f2)
        DISTRO_DESC=$(cat /etc/lsb-release | grep '^DISTRIB_DESCRIPTION' | cut -d '=' -f2)
        # DISTRO_RELEASE=$(cat /etc/lsb-release | grep '^DISTRO_RELEASE' | cut -d '=' -f2)
        DISTRO_RELEASE=$(cat /etc/lsb-release | grep -E '(^DISTRO_RELEASE|^DISTRIB_CODENAME)' | cut -d '=' -f2)        
        # OS Check - Debian - End
        
        # OS Check - CentOS - Begin
        elif [ -f /etc/centos-release ]; then
        DISTRO_ID=$DISTRO_ID_CENTOS
        DISTRO_DESC="$(cat /etc/centos-release)"
        DISTRO_RELEASE="$(echo $DISTRO_DESC | awk '{ for (i=1; i < NF; i++) { if ($i == "release") { print $(i+1); break }}}')"
        # OS Check - CentOS - End
        
        # OS Check - Fedora - Begin
        elif [ -f /etc/fedora-release ]; then
        DISTRO_ID=$DISTRO_ID_FEDORA
        DISTRO_DESC="$(cat /etc/fedora-release)"
        DISTRO_RELEASE="$(echo $DISTRO_DESC | awk '{ for (i=1; i < NF; i++) { if ($i == "release") { print $(i+1); break }}}')"
        # OS Check - Fedora - End
        #elif [ -f /etc/issue ]; then
        #if [ grep -q Amazon /etc/issue ]; then
        #aws=`grep -q Amazon /etc/issue`
        #if [ "$?" = "0" ]; then
        #DISTRO_ID=$DISTRO_ID_AWS
        #DISTRO_DESC="6"
        #fi
        #fi
        # OS Check - Mac OSX - Begin
        elif [ $(uname -s) = "Darwin" ]; then
        DISTRO_ID=$DISTRO_ID_DARWIN
        
        # Get operating system name and version - Start
        OSvers1=$(sw_vers -productVersion | cut -d. -f1)
        OSvers2=$(sw_vers -productVersion | cut -d. -f2)
        OSvers3=$(sw_vers -productVersion | cut -d. -f3)
        OSvers="$OSvers1.$OSvers2"
        #echo $OSvers
        
        case "$OSvers" in
            "10.8")
                OSName="Mountain Lion"
            ;;
            "10.9")
                OSName="Mavericks"
            ;;
            "10.10")
                OSName="Yosemite"
            ;;
            "10.11")
                OSName="El Capitan"
            ;;
            "10.12")
                OSName="Sierra"
            ;;
            "10.13")
                OSName="High Sierra"
            ;;
            "10.14")
                OSName="Mojave"
            ;;
            "10.15")
                OSName="Catalina"
            ;;
            "11.1")
                OSName="Big Sur"
            ;;
            default)
                OSName="Unknown"
            ;;
        esac
        
        #echo $OSName
        
        # Get operating system name and version - Stop
        OSVers=$OSvers1
        if [ ! -z $OSvers2 ]; then
            OSVers="$OSVers.$OSvers2"
        fi
        if [ ! -z $OSvers3 ]; then
            OSVers="$OSVers.$OSvers3"
        fi
        DISTRO_DESC="Mac OS X - $OSName $OSVers"
        DISTRO_RELEASE="$OSVers"
        # OS Check - Mac OSX - End
        
        # OS Check - Red Hat - Begin
        elif [ -f /etc/redhat-release ]; then
        DISTRO_DESC="$(cat /etc/redhat-release)"
        DISTRO_ID=
        echo $DISTRO_DESC | grep "Client" >/dev/null 2>&1 && DISTRO_ID=$DISTRO_ID_RHEL_CLIENT
        [ -z "$DISTRO_ID" ] && echo $DISTRO_DESC | grep "Server" >/dev/null 2>&1 && DISTRO_ID=$DISTRO_ID_RHEL_SERVER
        [ -z "$DISTRO_ID" ] && echo $DISTRO_DESC | grep "Workstation" >/dev/null 2>&1 && DISTRO_ID=$DISTRO_ID_RHEL_WORKSTATION
        [ -z "$DISTRO_ID" ] && echo $DISTRO_DESC >/dev/null 2>&1 && DISTRO_ID=$DISTRO_ID_RHEL_SERVER
        DISTRO_RELEASE="$(echo $DISTRO_DESC | awk '{ for (i=1; i < NF; i++) { if ($i == "release") { print $(i+1); break }}}')"
        # echo $DISTRO_ID
        # OS Check - Red Hat - End
    else
        unknown_os
        exit
    fi
    
    SUB='Zorin OS 15'
    if [[ "$DISTRO_DESC" =~ .*"$SUB".* ]]; then
        DISTRO_DESC=$(echo "$DISTRO_DESC (Ubuntu 18.04 LTS)")
    fi
    
    #
    # Differentiate between Ubuntu and Ubuntu Kylin.
    #
    
    if [ "$DISTRO_ID" = "$DISTRO_ID_UBUNTU" ]; then
        #
        # Distinguish between Ubuntu and Ubuntu Kylin where possible.   Release
        # files are common place and the following file exists on
        # Ubuntu Kylin 14.04 LTS, but not on Ubuntu Kylin 13.04.   Your mileage
        # may vary...
        if [ -f /etc/ubuntukylin-release ]; then
            DISTRO_ID=$DISTRO_ID_KYLIN
        fi
    fi
    
    if [ "$DISTRO_ID" = "SUSE" ]; then
        #
        # Add the distribution ID "SUSE" to the DISTRO_ID_SUSE
        #
        DISTRO_ID=$DISTRO_ID_SUSE
    fi
    
    #
    # Check supported distributions
    #
    case "$DISTRO_ID" in
        ${DISTRO_ID_CENTOS} | ${DISTRO_ID_FEDORA} | ${DISTRO_ID_RHEL_CLIENT} | ${DISTRO_ID_RHEL_SERVER} | ${DISTRO_ID_RHEL_WORKSTATION} | ${DISTRO_ID_SUSE} | ${DISTRO_ID_NEOKYLIN}) ;;
        
        ${DISTRO_ID_KYLIN} | ${DISTRO_ID_UBUNTU} | ${DISTRO_ID_ZORIN} | ${DISTRO_ID_RASPBIAN})
            #echo $DISTRO_DESC | grep " LTS$" >/dev/null 2>&1
            #if [ "$?" != "0" ]; then
            #echo "$DISTRO_DESC not an LTS release"
            #exit
            #fi
        ;;
        ${DISTRO_ID_DARWIN}) ;;
        
        *)
            echo -e "$DISTRO_ID\n$DISTRO_DESC not supported"
            exit
        ;;
    esac
    
    
    
    case "$1" in
        -a)
            echo "$DISTRO_ID"
            echo "$DISTRO_RELEASE"
            echo "$DISTRO_DESC"
        ;;
        -d)
            echo "$DISTRO_DESC"
        ;;
        -r)
            echo "$DISTRO_RELEASE"
        ;;
        -i)
            echo "$DISTRO_ID"
        ;;
        *)
            echo "What details would you like to see?"
            echo " -a is for all details."
            echo " -d is for full OS name with version."
            echo " -r is for the release version of the OS"
            echo -e " -i is for the name of the distribution\n"
            echo "Type your option (a, d, r, or i), followed by [ENTER]:"
            read uiOption
            
            case "$uiOption" in
                a)
                    echo "$DISTRO_ID"
                    echo "$DISTRO_RELEASE"
                    echo "$DISTRO_DESC"
                ;;
                d)
                    echo "$DISTRO_DESC"
                ;;
                r)
                    echo "$DISTRO_RELEASE"
                ;;
                i)
                    echo "$DISTRO_ID"
                ;;
                *)
                    echo "$DISTRO_ID"
                ;;
            esac
        ;;
    esac
}
# Functions - End

identify_distribution $1
#echo $DISTRO_ID
Originally Posted on June 4, 2020
Last Updated on August 17, 2024
All information on this site is shared with the intention to help. Before any source code or program is ran on a production (non-development) system it is suggested you test it and fully understand what it is doing not just what it appears it is doing. I accept no responsibility for any damage you may do with this code.
CentOS Code Debian Fedora Mac OS X Shell Mac OSX Raspberry Pi Raspbian (Raspberry Pi OS) Red Hat Ubuntu UNIX UNIX Shell Scripts Zorin OS

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