sys-info.sh

#!/bin/bash
#
# Author: Dawid Mocek
#

if [[ $EUID -ne 0 ]]; then
    echo "Run as root" 1>&2
    exit 1
fi

# Default values
JAVA_VER="N/A"
CENTOS_VER="N/A"
OEL_VER="N/A"
RHEL_VER="N/A"
FIREWALLD="Disabled"
IPTABLES="Disabled"
IS_RPM="FALSE"
PTYHON_VER="N/A"

# Files
CENTOS_VER_FILE="/etc/centos-release"
OEL_VER_FILE="/etc/oracle-release"
RHEL_VER_FILE="/etc/redhat-release"

# Hostname
HOSTNAME=$(hostname)

# Kernel version
KERNEL_VER=$(uname -r)

# SELinux
SELINUX=$(getenforce)

# IPTables
IPTABLES_CMD=$(service iptables status >/dev/null 2>&1)
if [ $? -eq 0 ]; then
    IPTABLES="Enabled"
fi

# (Firewalld - pod centos 7 komenda service ma alias do systemctl)
FIREWALLD_CMD=$(service firewalld status >/dev/null 2>&1)
if [ $? -eq 0 ]; then
    FIREWALLD="Enabled"
fi

# gets oracle linux version
if [ -f "$OEL_VER_FILE" ]; then
    OEL_VER=$(cat $OEL_VER_FILE)
    IS_RPM="TRUE"
fi

# gets red hat linux version
if [ -f "$RHEL_VER_FILE" ]; then
    RHEL_VER=$(cat $RHEL_VER_FILE)
    IS_RPM="TRUE"
fi

# gets centshit version
if [ -f "$CENTOS_VER_FILE" ]; then
    CENTOS_VER=$(cat $CENTOS_VER_FILE)
    IS_RPM="TRUE"
fi

# gets _ORACLE_ java version
JAVA_CMD=$(which java 2>/dev/null)
if [ -x "$JAVA_CMD" ]; then
    JAVA_VER=(`$JAVA_CMD -version  2>&1 | head -n1 | awk '{print $3}' | sed -e 's/\"//g'`)
# if java command is not int PATH check packages
else
    if [ "$IS_RPM" == "TRUE" ]; then
        temp=$(rpm -qa --queryformat "%{SUMMARY} %{VERSION}-%{RELEASE}\n" jdk)

        if [ "x$temp" == "x" ]; then
            JAVA_VER="N/A"
        else
            JAVA_VER="$temp"
        fi

    fi
fi


# gets python version
PYTHON_CMD=$(which python 2>/dev/null)
if [ -x "$PYTHON_CMD" ]; then
    PYTHON_VER=$($PYTHON_CMD --version 2>&1)
fi


DATETIME=$(date +"%Y-%m-%d_%H-%M-%S")
WHEREAMI=$(pwd)
OUTPUT="$WHEREAMI/$HOSTNAME""_""$DATETIME.txt"

# Save to CSV
cat <<EOF > $OUTPUT
"Hostname","$HOSTNAME"
"Kernel","$KERNEL_VER"
"RHEL","$RHEL_VER"
"OEL","$OEL_VER"
"CENTOS","$CENTOS_VER"
"SELINUX","$SELINUX"
"IPTABLES","$IPTABLES"
"FIREWALLD","$FIREWALLD"
"JAVA","$JAVA_VER"
"PYTHON","$PYTHON_VER"
EOF