diff --git a/bin/ignite.sh b/bin/ignite.sh
index 8ef040cdb711b..0ba839f9f389e 100755
--- a/bin/ignite.sh
+++ b/bin/ignite.sh
@@ -1,4 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash
+set -o nounset
+set -o errexit
+set -o pipefail
+set -o errtrace
+set -o functrace
+
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
@@ -23,7 +29,7 @@
 #
 # Import common functions.
 #
-if [ "${IGNITE_HOME}" = "" ];
+if [ "${IGNITE_HOME:-}" = "" ];
     then IGNITE_HOME_TMP="$(dirname "$(cd "$(dirname "$0")"; "pwd")")";
     else IGNITE_HOME_TMP=${IGNITE_HOME};
 fi
@@ -45,7 +51,7 @@ checkJava
 #
 setIgniteHome
 
-if [ "${DEFAULT_CONFIG}" == "" ]; then
+if [ "${DEFAULT_CONFIG:-}" == "" ]; then
     DEFAULT_CONFIG=config/default-config.xml
 fi
 
@@ -80,7 +86,7 @@ fi
 # Mac OS specific support to display correct name in the dock.
 osname=`uname`
 
-if [ "${DOCK_OPTS}" == "" ]; then
+if [ "${DOCK_OPTS:-}" == "" ]; then
     DOCK_OPTS="-Xdock:name=Ignite Node"
 fi
 
@@ -134,7 +140,7 @@ fi
 #
 # Set main class to start service (grid node by default).
 #
-if [ "${MAIN_CLASS}" = "" ]; then
+if [ "${MAIN_CLASS:-}" = "" ]; then
     MAIN_CLASS=org.apache.ignite.startup.cmdline.CommandLineStartup
 fi
 
@@ -147,7 +153,7 @@ fi
 #
 # Final JVM_OPTS for Java 9+ compatibility
 #
-javaMajorVersion "${JAVA_HOME}/bin/java"
+javaMajorVersion "${JAVA}"
 
 if [ $version -eq 8 ] ; then
     JVM_OPTS="\
diff --git a/bin/include/functions.sh b/bin/include/functions.sh
index 7bdcefd8cf4dd..4edf0e60df7b2 100755
--- a/bin/include/functions.sh
+++ b/bin/include/functions.sh
@@ -1,4 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash
+set -o nounset
+set -o errexit
+set -o pipefail
+set -o errtrace
+set -o functrace
+
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
@@ -96,7 +102,7 @@ setIgniteHome() {
     #
     # Set IGNITE_HOME, if needed.
     #
-    if [ "${IGNITE_HOME}" = "" ]; then
+    if [ "${IGNITE_HOME:-}" = "" ]; then
         export IGNITE_HOME=${IGNITE_HOME_TMP}
     fi
 
diff --git a/bin/include/parseargs.sh b/bin/include/parseargs.sh
index 1efb48edd0793..759994d8cb1ab 100755
--- a/bin/include/parseargs.sh
+++ b/bin/include/parseargs.sh
@@ -1,4 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash
+set -o nounset
+set -o errexit
+set -o pipefail
+set -o errtrace
+set -o functrace
+
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
@@ -55,9 +61,9 @@ done
 #
 # Set 'file.encoding' to UTF-8 default if not specified otherwise
 #
-case "${JVM_OPTS}" in
+case "${JVM_OPTS:-}" in
     *-Dfile.encoding=*)
         ;;
     *)
-        JVM_OPTS="${JVM_OPTS} -Dfile.encoding=UTF-8";;
+        JVM_OPTS="${JVM_OPTS:-} -Dfile.encoding=UTF-8";;
 esac
diff --git a/bin/include/setenv.sh b/bin/include/setenv.sh
index 4b82cf9c9ba3f..7290ccd8e73e0 100755
--- a/bin/include/setenv.sh
+++ b/bin/include/setenv.sh
@@ -1,4 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash
+set -o nounset
+set -o errexit
+set -o pipefail
+set -o errtrace
+set -o functrace
+
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
@@ -27,7 +33,7 @@
 #
 # Check IGNITE_HOME.
 #
-if [ "${IGNITE_HOME}" = "" ]; then
+if [ "${IGNITE_HOME:-}" = "" ]; then
     echo $0", ERROR: Ignite installation folder is not found."
     echo "Please create IGNITE_HOME variable pointing to location of"
     echo "Ignite installation folder."
@@ -62,12 +68,12 @@ IFS=$(echo -en "\n\b")
 for file in ${IGNITE_HOME}/libs/*
 do
     if [ -d ${file} ] && [ "${file}" != "${IGNITE_HOME}"/libs/optional ]; then
-        IGNITE_LIBS=${IGNITE_LIBS}${SEP}${file}/*
+        IGNITE_LIBS=${IGNITE_LIBS:-}${SEP}${file}/*
     fi
 done
 
 IFS=$SAVEIFS
 
-if [ "${USER_LIBS}" != "" ]; then
-    IGNITE_LIBS=${USER_LIBS}${SEP}${IGNITE_LIBS}
+if [ "${USER_LIBS:-}" != "" ]; then
+    IGNITE_LIBS=${USER_LIBS:-}${SEP}${IGNITE_LIBS}
 fi