diff --git a/docker-bench-security.sh b/docker-bench-security.sh
index 7e69de09..43d58469 100755
--- a/docker-bench-security.sh
+++ b/docker-bench-security.sh
@@ -126,7 +126,7 @@ main () {
     cis
   elif [ -z "$check" ] && [ "$checkexclude" ]; then
     checkexcluded="$(echo ",$checkexclude" | sed -e 's/^/\^/g' -e 's/,/\$|/g' -e 's/$/\$/g')"
-    for c in $(grep 'check_[0-9]_' functions_lib.sh | grep -vE "\'$checkexcluded\'"); do
+    grep 'check_[0-9]_' functions_lib.sh | grep -vE "\'$checkexcluded\'" | while read -r c; do
       "$c"
     done
   else
diff --git a/tests/2_docker_daemon_configuration.sh b/tests/2_docker_daemon_configuration.sh
index 5d79a232..f4cea69e 100644
--- a/tests/2_docker_daemon_configuration.sh
+++ b/tests/2_docker_daemon_configuration.sh
@@ -4,7 +4,7 @@ check_2() {
   logit "\n"
   id_2="2"
   desc_2="Docker daemon configuration"
-  check_2="id_2 - $desc_2"
+  check_2="$id_2 - $desc_2"
   info "$check_2"
   startsectionjson "$id_2" "$desc_2"
 }
diff --git a/tests/3_docker_daemon_configuration_files.sh b/tests/3_docker_daemon_configuration_files.sh
index 6481b0d3..74831a60 100644
--- a/tests/3_docker_daemon_configuration_files.sh
+++ b/tests/3_docker_daemon_configuration_files.sh
@@ -47,7 +47,7 @@ check_3_2() {
   totalChecks=$((totalChecks + 1))
   file="$(get_systemd_service_file docker.service)"
   if [ -f "$file" ]; then
-    if [ "$(stat -c %a $file)" -eq 644 -o "$(stat -c %a $file)" -eq 600 ]; then
+    if [ "$(stat -c %a $file)" -eq 644 ] || [ "$(stat -c %a $file)" -eq 600 ]; then
       pass "$check_3_2"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
@@ -103,7 +103,7 @@ check_3_4() {
   totalChecks=$((totalChecks + 1))
   file="$(get_systemd_service_file docker.socket)"
   if [ -f "$file" ]; then
-    if [ "$(stat -c %a $file)" -eq 644 -o "$(stat -c %a $file)" -eq 600 ]; then
+    if [ "$(stat -c %a $file)" -eq 644 ] || [ "$(stat -c %a $file)" -eq 600 ]; then
       pass "$check_3_4"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
@@ -159,7 +159,7 @@ check_3_6() {
   totalChecks=$((totalChecks + 1))
   directory="/etc/docker"
   if [ -d "$directory" ]; then
-    if [ "$(stat -c %a $directory)" -eq 755 -o "$(stat -c %a $directory)" -eq 700 ]; then
+    if [ "$(stat -c %a $directory)" -eq 755 ] || [ "$(stat -c %a $directory)" -eq 700 ]; then
       pass "$check_3_6"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
@@ -225,7 +225,7 @@ check_3_8() {
     fail=0
     perms=$(find "$directory" -type f -name '*.crt')
     for p in $perms; do
-      if [ "$(stat -c %a $p)" -ne 444 -a "$(stat -c %a $p)" -ne 400 ]; then
+      if [ "$(stat -c %a $p)" -ne 444 ] && [ "$(stat -c %a $p)" -ne 400 ]; then
         fail=1
       fi
     done
@@ -293,7 +293,7 @@ check_3_10() {
     tlscacert=$(get_docker_effective_command_line_args '--tlscacert' | sed -n 's/.*tlscacert=\([^s]\)/\1/p' | sed 's/--/ --/g' | cut -d " " -f 1)
   fi
   if [ -f "$tlscacert" ]; then
-    if [ "$(stat -c %a $tlscacert)" -eq 444 -o "$(stat -c %a $tlscacert)" -eq 400 ]; then
+    if [ "$(stat -c %a $tlscacert)" -eq 444 ] || [ "$(stat -c %a $tlscacert)" -eq 400 ]; then
       pass "$check_3_10"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
@@ -357,7 +357,7 @@ check_3_12() {
     tlscert=$(get_docker_effective_command_line_args '--tlscert' | sed -n 's/.*tlscert=\([^s]\)/\1/p' | sed 's/--/ --/g' | cut -d " " -f 1)
   fi
   if [ -f "$tlscert" ]; then
-    if [ "$(stat -c %a $tlscert)" -eq 444 -o "$(stat -c %a $tlscert)" -eq 400 ]; then
+    if [ "$(stat -c %a $tlscert)" -eq 444 ] || [ "$(stat -c %a $tlscert)" -eq 400 ]; then
       pass "$check_3_12"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
@@ -477,7 +477,7 @@ check_3_16() {
   totalChecks=$((totalChecks + 1))
   file="/var/run/docker.sock"
   if [ -S "$file" ]; then
-    if [ "$(stat -c %a $file)" -eq 660 -o "$(stat -c %a $file)" -eq 600 ]; then
+    if [ "$(stat -c %a $file)" -eq 660 ] || [  "$(stat -c %a $file)" -eq 600 ]; then
       pass "$check_3_16"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
@@ -533,7 +533,7 @@ check_3_18() {
   totalChecks=$((totalChecks + 1))
   file="/etc/docker/daemon.json"
   if [ -f "$file" ]; then
-    if [ "$(stat -c %a $file)" -eq 644 -o "$(stat -c %a $file)" -eq 640 -o "$(stat -c %a $file)" -eq 600 ]; then
+    if [ "$(stat -c %a $file)" -eq 644 ] || [  "$(stat -c %a $file)" -eq 640 ] || [ "$(stat -c %a $file)" -eq 600 ]; then
       pass "$check_3_18"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
@@ -589,7 +589,7 @@ check_3_20() {
   totalChecks=$((totalChecks + 1))
   file="/etc/default/docker"
   if [ -f "$file" ]; then
-    if [ "$(stat -c %a $file)" -eq 644 -o "$(stat -c %a $file)" -eq 600 ]; then
+    if [ "$(stat -c %a $file)" -eq 644 ] || [ "$(stat -c %a $file)" -eq 600 ]; then
       pass "$check_3_20"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
diff --git a/tests/4_container_images.sh b/tests/4_container_images.sh
index cc227dbe..4dbace6c 100644
--- a/tests/4_container_images.sh
+++ b/tests/4_container_images.sh
@@ -36,7 +36,7 @@ check_4_1() {
     for c in $containers; do
       user=$(docker inspect --format 'User={{.Config.User}}' "$c")
 
-      if [ "$user" = "User=" -o "$user" = "User=[]" -o "$user" = "User=<no value>" ]; then
+      if [ "$user" = "User=" ] || [ "$user" = "User=[]" ] || [ "$user" = "User=<no value>" ]; then
         # If it's the first container, fail the test
         if [ $fail -eq 0 ]; then
           warn "$check_4_1"
diff --git a/tests/5_container_runtime.sh b/tests/5_container_runtime.sh
index eaa9ada3..9db54d8b 100644
--- a/tests/5_container_runtime.sh
+++ b/tests/5_container_runtime.sh
@@ -40,7 +40,7 @@ check_5_1() {
   for c in $containers; do
     policy=$(docker inspect --format 'AppArmorProfile={{ .AppArmorProfile }}' "$c")
 
-    if [ "$policy" = "AppArmorProfile=" -o "$policy" = "AppArmorProfile=[]" -o "$policy" = "AppArmorProfile=<no value>" ]; then
+    if [ "$policy" = "AppArmorProfile=" ] || [ "$policy" = "AppArmorProfile=[]" ] || [ "$policy" = "AppArmorProfile=<no value>" ]; then
       # If it's the first container, fail the test
       if [ $fail -eq 0 ]; then
         warn "$check_5_1"
@@ -82,7 +82,7 @@ check_5_2() {
   for c in $containers; do
     policy=$(docker inspect --format 'SecurityOpt={{ .HostConfig.SecurityOpt }}' "$c")
 
-    if [ "$policy" = "SecurityOpt=" -o "$policy" = "SecurityOpt=[]" -o "$policy" = "SecurityOpt=<no value>" ]; then
+    if [ "$policy" = "SecurityOpt=" ] || [ "$policy" = "SecurityOpt=[]" ] || [ "$policy" = "SecurityOpt=<no value>" ]; then
       # If it's the first container, fail the test
       if [ $fail -eq 0 ]; then
         warn "$check_5_2"
@@ -127,7 +127,7 @@ check_5_3() {
       sed 's/CAPADD/CapAdd/' | \
       sed -r "s/AUDIT_WRITE|CHOWN|DAC_OVERRIDE|FOWNER|FSETID|KILL|MKNOD|NET_BIND_SERVICE|NET_RAW|SETFCAP|SETGID|SETPCAP|SETUID|SYS_CHROOT|\s//g")
 
-    if [ "$caps" != 'CapAdd=' -a "$caps" != 'CapAdd=[]' -a "$caps" != 'CapAdd=<no value>' -a "$caps" != 'CapAdd=<nil>' ]; then
+    if [ "$caps" != 'CapAdd=' ] && [ "$caps" != 'CapAdd=[]' ] && [ "$caps" != 'CapAdd=<no value>' ] && [ "$caps" != 'CapAdd=<nil>' ]; then
       # If it's the first container, fail the test
       if [ $fail -eq 0 ]; then
         warn "$check_5_3"
@@ -736,7 +736,7 @@ check_5_17() {
   for c in $containers; do
     devices=$(docker inspect --format 'Devices={{ .HostConfig.Devices }}' "$c")
 
-    if [ "$devices" != "Devices=" -a "$devices" != "Devices=[]" -a "$devices" != "Devices=<no value>" ]; then
+    if [ "$devices" != "Devices=" ] && [ "$devices" != "Devices=[]" ] && [ "$devices" != "Devices=<no value>" ]; then
       # If it's the first container, fail the test
       if [ $fail -eq 0 ]; then
         info "$check_5_17"
@@ -778,7 +778,7 @@ check_5_18() {
   for c in $containers; do
     ulimits=$(docker inspect --format 'Ulimits={{ .HostConfig.Ulimits }}' "$c")
 
-    if [ "$ulimits" = "Ulimits=" -o "$ulimits" = "Ulimits=[]" -o "$ulimits" = "Ulimits=<no value>" ]; then
+    if [ "$ulimits" = "Ulimits=" ] || [ "$ulimits" = "Ulimits=[]" ] || [ "$ulimits" = "Ulimits=<no value>" ]; then
       # If it's the first container, fail the test
       if [ $fail -eq 0 ]; then
         info "$check_5_18"