diff --git a/hadoop-ozone/dev-support/checks/acceptance.sh b/hadoop-ozone/dev-support/checks/acceptance.sh
index 258c4e22e4f..4a50e089eee 100755
--- a/hadoop-ozone/dev-support/checks/acceptance.sh
+++ b/hadoop-ozone/dev-support/checks/acceptance.sh
@@ -14,7 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
+
 export HADOOP_VERSION=3
-OZONE_VERSION=$(cat $DIR/../../pom.xml  | grep "<ozone.version>" | sed 's/<[^>]*>//g'|  sed 's/^[ \t]*//')
-"$DIR/../../dist/target/ozone-$OZONE_VERSION/compose/test-all.sh"
+OZONE_VERSION=$(grep "<ozone.version>" "$DIR/../../pom.xml" | sed 's/<[^>]*>//g'|  sed 's/^[ \t]*//')
+cd "$DIR/../../dist/target/ozone-$OZONE_VERSION/compose" || exit 1
+./test-all.sh
 exit $?
diff --git a/hadoop-ozone/dev-support/checks/author.sh b/hadoop-ozone/dev-support/checks/author.sh
index 56d15a58ea8..49a8fba283c 100755
--- a/hadoop-ozone/dev-support/checks/author.sh
+++ b/hadoop-ozone/dev-support/checks/author.sh
@@ -13,9 +13,12 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
+
 grep -r --include="*.java" "@author" .
-if [ $? -gt 0 ]; then
+if grep -r --include="*.java" "@author" .; then
   exit 0
 else
-  exit -1
+  exit 1
 fi
diff --git a/hadoop-ozone/dev-support/checks/build.sh b/hadoop-ozone/dev-support/checks/build.sh
index 71bf778ab6d..11973301b27 100755
--- a/hadoop-ozone/dev-support/checks/build.sh
+++ b/hadoop-ozone/dev-support/checks/build.sh
@@ -13,6 +13,9 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
+
 export MAVEN_OPTS="-Xmx4096m"
 mvn -B -f pom.ozone.xml -Dmaven.javadoc.skip=true -DskipTests clean install
 exit $?
diff --git a/hadoop-ozone/dev-support/checks/checkstyle.sh b/hadoop-ozone/dev-support/checks/checkstyle.sh
index 323cbc88683..19d6a89792a 100755
--- a/hadoop-ozone/dev-support/checks/checkstyle.sh
+++ b/hadoop-ozone/dev-support/checks/checkstyle.sh
@@ -13,14 +13,17 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
+
 mvn -B -fn checkstyle:check -f pom.ozone.xml
 
 #Print out the exact violations with parsing XML results with sed
-find -name checkstyle-errors.xml | xargs sed  '$!N; /<file.*\n<\/file/d;P;D' | sed '/<\/.*/d;/<checkstyle.*/d;s/<error.*line="\([[:digit:]]*\)".*message="\([^"]\+\).*/ \1: \2/;s/<file name="\([^"]*\)".*/\1/;/<\?xml.*>/d'
+find "." -name checkstyle-errors.xml -print0  | xargs sed  '$!N; /<file.*\n<\/file/d;P;D' | sed '/<\/.*/d;/<checkstyle.*/d;s/<error.*line="\([[:digit:]]*\)".*message="\([^"]\+\).*/ \1: \2/;s/<file name="\([^"]*\)".*/\1/;/<\?xml.*>/d'
 
 violations=$(grep -r error --include checkstyle-errors.xml .| wc -l)
 if [[ $violations -gt 0 ]]; then
     echo "There are $violations checkstyle violations"
-    exit -1
+    exit 1
 fi
 exit 0
diff --git a/hadoop-ozone/dev-support/checks/findbugs.sh b/hadoop-ozone/dev-support/checks/findbugs.sh
index c8bd40b40fd..5dcb650e640 100755
--- a/hadoop-ozone/dev-support/checks/findbugs.sh
+++ b/hadoop-ozone/dev-support/checks/findbugs.sh
@@ -13,6 +13,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
 
 FINDBUGS_ALL_FILE=./target/findbugs-all.txt
 
@@ -22,13 +24,13 @@ touch "$FINDBUGS_ALL_FILE"
 
 mvn -B compile -fn findbugs:check -Dfindbugs.failOnError=false  -f pom.ozone.xml
 
-find hadoop-ozone -name findbugsXml.xml | xargs -n1 convertXmlToText | tee -a "${FINDBUGS_ALL_FILE}"
-find hadoop-hdds -name findbugsXml.xml | xargs -n1 convertXmlToText | tee -a "${FINDBUGS_ALL_FILE}"
+find hadoop-ozone -name findbugsXml.xml -print0 | xargs -n1 convertXmlToText | tee -a "${FINDBUGS_ALL_FILE}"
+find hadoop-hdds -name findbugsXml.xml -print0  | xargs -n1 convertXmlToText | tee -a "${FINDBUGS_ALL_FILE}"
 
-bugs=$(cat "$FINDBUGS_ALL_FILE" | wc -l)
+bugs=$(wc -l < "$FINDBUGS_ALL_FILE")
 
 if [[ ${bugs} -gt 0 ]]; then
-   exit -1
+   exit 1
 else
    exit 0
 fi
diff --git a/hadoop-ozone/dev-support/checks/integration.sh b/hadoop-ozone/dev-support/checks/integration.sh
index 8270d4f00d4..9dac627cff2 100755
--- a/hadoop-ozone/dev-support/checks/integration.sh
+++ b/hadoop-ozone/dev-support/checks/integration.sh
@@ -13,13 +13,16 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
+
 export MAVEN_OPTS="-Xmx4096m"
 mvn -B install -f pom.ozone.xml -DskipTests
 mvn -B -fn test -f pom.ozone.xml -pl :hadoop-ozone-integration-test,:hadoop-ozone-filesystem
-module_failed_tests=$(find "." -name 'TEST*.xml'\
+module_failed_tests=$(find "." -name 'TEST*.xml' -print0 \
     | xargs "grep" -l -E "<failure|<error"\
     | awk -F/ '{sub("'"TEST-JUNIT_TEST_OUTPUT_DIR"'",""); sub(".xml",""); print $NF}')
 if [[ -n "${module_failed_tests}" ]] ; then
-    exit -1
+    exit 1
 fi
 exit 0
diff --git a/hadoop-ozone/dev-support/checks/isolation.sh b/hadoop-ozone/dev-support/checks/isolation.sh
index c8f2c628b0d..12802350d29 100755
--- a/hadoop-ozone/dev-support/checks/isolation.sh
+++ b/hadoop-ozone/dev-support/checks/isolation.sh
@@ -13,12 +13,15 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-hadooplines=$(git diff --name-only HEAD~1..HEAD | grep -v hadoop-ozone | grep -v hadoop-hdds | wc -l )
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
+
+hadooplines=$(git diff --name-only HEAD~1..HEAD | grep -v hadoop-ozone | grep -c -v hadoop-hdds  )
 if [ "$hadooplines" == "0" ]; then
   echo "Only ozone/hdds subprojects are changed"
   exit 0
 else
   echo "Main hadoop projects are changed in an ozone patch."
   echo "Please do it in a HADOOP/HDFS patch and test it with hadoop precommit tests"
-  exit -1
+  exit 1
 fi
diff --git a/hadoop-ozone/dev-support/checks/rat.sh b/hadoop-ozone/dev-support/checks/rat.sh
index 9e16e126b7d..43b4639a34f 100755
--- a/hadoop-ozone/dev-support/checks/rat.sh
+++ b/hadoop-ozone/dev-support/checks/rat.sh
@@ -13,15 +13,17 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR/../../.." || exit 1
 
 mkdir -p target
 rm target/rat-aggregated.txt
-cd hadoop-hdds
+cd hadoop-hdds || exit 1
 mvn -B -fn org.apache.rat:apache-rat-plugin:0.13:check
-cd ../hadoop-ozone
+cd ../hadoop-ozone || exit 1
 mvn -B -fn org.apache.rat:apache-rat-plugin:0.13:check
 grep -r --include=rat.txt "!????" | tee ./target/rat-aggregated.txt
 if [ "$(cat target/rat-aggregated.txt)" ]; then
-   exit -1
+   exit 1
 fi
 
diff --git a/hadoop-ozone/dev-support/checks/unit.sh b/hadoop-ozone/dev-support/checks/unit.sh
index fe129104432..e9e09dd287f 100755
--- a/hadoop-ozone/dev-support/checks/unit.sh
+++ b/hadoop-ozone/dev-support/checks/unit.sh
@@ -15,10 +15,10 @@
 # limitations under the License.
 export MAVEN_OPTS="-Xmx4096m"
 mvn -fn test -f pom.ozone.xml -pl \!:hadoop-ozone-integration-test,\!:hadoop-ozone-filesystem
-module_failed_tests=$(find "." -name 'TEST*.xml'\
+module_failed_tests=$(find "." -name 'TEST*.xml' -print0 \
     | xargs "grep" -l -E "<failure|<error"\
     | awk -F/ '{sub("'"TEST-JUNIT_TEST_OUTPUT_DIR"'",""); sub(".xml",""); print $NF}')
 if [[ -n "${module_failed_tests}" ]] ; then
-    exit -1
+    exit 1
 fi
 exit 0