diff --git a/usr/local/share/bastille/bootstrap.sh b/usr/local/share/bastille/bootstrap.sh
index 503a8c83..347a1eff 100644
--- a/usr/local/share/bastille/bootstrap.sh
+++ b/usr/local/share/bastille/bootstrap.sh
@@ -436,10 +436,10 @@ ubuntu_bionic|bionic|ubuntu-bionic)
         warn "linprocfs_load, linsysfs_load, tmpfs_load not enabled in /boot/loader.conf or linux_enable not active. Should I do that for you?  (N|y)"
         read  answer
         case $answer in
-            no|No|n|N|"")
+            [Nn][Oo]|[Nn]|"")
                 error_exit "Exiting."
                 ;;
-            yes|Yes|y|Y)
+            [Yy][Ee][Ss]|[Yy])
                 info "Loading modules"
                 kldload linux linux64 linprocfs linsysfs tmpfs
                 info "Persisting modules"
@@ -456,10 +456,10 @@ ubuntu_bionic|bionic|ubuntu-bionic)
         warn "Debootstrap not found. Should it be installed? (N|y)"
         read  answer
         case $answer in
-            no|No|n|N|"")
+            [Nn][Oo]|[Nn]|"")
                 error_exit "Exiting. You need to install debootstap before boostrapping a Linux jail."
                 ;;
-            yes|Yes|y|Y)
+            [Yy][Ee][Ss]|[Yy])
                 pkg install -y debootstrap
                 debootstrap --foreign --arch=amd64 --no-check-gpg bionic "${bastille_releasesdir}"/Ubuntu_1804
                 ;;
@@ -474,10 +474,10 @@ ubuntu_focal|focal|ubuntu-focal)
         warn "linprocfs_load, linsysfs_load, tmpfs_load not enabled in /boot/loader.conf or linux_enable not active. Should I do that for you?  (N|y)"
         read  answer
         case $answer in
-            no|No|n|N|"")
+            [Nn][Oo]|[Nn]|"")
                 error_exit "Exiting."
                 ;;
-            yes|Yes|y|Y)
+            [Yy][Ee][Ss]|[Yy])
                 info "Loading modules"
                 kldload linux linux64 linprocfs linsysfs tmpfs
                 info "Persisting modules"
@@ -494,10 +494,10 @@ ubuntu_focal|focal|ubuntu-focal)
         warn "Debootstrap not found. Should it be installed? (N|y)"
         read  answer
         case $answer in
-            no|No|n|N|"")
+            [Nn][Oo]|[Nn]|"")
                 error_exit "Exiting. You need to install debootstap before boostrapping a Linux jail."
                 ;;
-            yes|Yes|y|Y)
+            [Yy][Ee][Ss]|[Yy])
                 pkg install -y debootstrap
                 debootstrap --foreign --arch=amd64 --no-check-gpg focal "${bastille_releasesdir}"/Ubuntu_2004
                 ;;
diff --git a/usr/local/share/bastille/config.sh b/usr/local/share/bastille/config.sh
index 12d88280..592ff57b 100644
--- a/usr/local/share/bastille/config.sh
+++ b/usr/local/share/bastille/config.sh
@@ -76,7 +76,7 @@ for _jail in ${JAILS}; do
     MATCH_FOUND=$?
 
     if [ "${ACTION}" = 'get' ]; then
-        if [ $MATCH_FOUND -ne 0 ]; then
+        if [ "${MATCH_FOUND}" -ne 0 ]; then
             warn "not set"
         elif ! echo "${MATCH_LINE}" | grep '=' > /dev/null 2>&1; then
             echo "enabled"
@@ -99,7 +99,7 @@ for _jail in ${JAILS}; do
             LINE="  ${PROPERTY};"
         fi
 
-        if [ $MATCH_FOUND -ne 0 ]; then # No match, so insert the property at the end. -- cwells
+        if [ "${MATCH_FOUND}" -ne 0 ]; then # No match, so insert the property at the end. -- cwells
             echo "$(awk -v line="${LINE}" '$0 == "}" { print line; } 1 { print $0; }' "${FILE}")" > "${FILE}"
         else # Replace the existing value. -- cwells
             sed -i '' -E "s/ *${ESCAPED_PROPERTY}[ =;].*/${LINE}/" "${FILE}"
diff --git a/usr/local/share/bastille/create.sh b/usr/local/share/bastille/create.sh
index 9acf1347..2b796f48 100644
--- a/usr/local/share/bastille/create.sh
+++ b/usr/local/share/bastille/create.sh
@@ -358,8 +358,7 @@ create_jail() {
             FILE_LIST=".cshrc .profile COPYRIGHT dev etc media mnt net proc root tmp var usr/obj usr/tests"
             for files in ${FILE_LIST}; do
                 if [ -f "${bastille_releasesdir}/${RELEASE}/${files}" ] || [ -d "${bastille_releasesdir}/${RELEASE}/${files}" ]; then
-                    cp -a "${bastille_releasesdir}/${RELEASE}/${files}" "${bastille_jail_path}/${files}"
-                    if [ "$?" -ne 0 ]; then
+                    if ! cp -a "${bastille_releasesdir}/${RELEASE}/${files}" "${bastille_jail_path}/${files}"; then
                         ## notify and clean stale files/directories
                         bastille destroy "${NAME}"
                         error_exit "Failed to copy release files. Please retry create!"
diff --git a/usr/local/share/bastille/pkg.sh b/usr/local/share/bastille/pkg.sh
index 989c1906..4df3efc9 100644
--- a/usr/local/share/bastille/pkg.sh
+++ b/usr/local/share/bastille/pkg.sh
@@ -47,7 +47,7 @@ fi
 
 for _jail in ${JAILS}; do
     info "[${_jail}]:"
-    if [ -f /usr/sbin/pkg ]; then
+    if [ -f "/usr/sbin/pkg" ]; then
         jexec -l "${_jail}" /usr/sbin/pkg "$@"
     else
         jexec -l "${_jail}" /usr/sbin/mport "$@"
diff --git a/usr/local/share/bastille/update.sh b/usr/local/share/bastille/update.sh
index 78a7a80e..bd086303 100644
--- a/usr/local/share/bastille/update.sh
+++ b/usr/local/share/bastille/update.sh
@@ -64,7 +64,7 @@ if [ "${TARGET}" = "ALL" ]; then
     error_exit "Batch upgrade is unsupported."
 fi
 
-if [ -f /bin/midnightbsd-version ]; then
+if [ -f "/bin/midnightbsd-version" ]; then
     echo -e "${COLOR_RED}Not yet supported on MidnightBSD.${COLOR_RESET}"
     exit 1
 fi
diff --git a/usr/local/share/bastille/upgrade.sh b/usr/local/share/bastille/upgrade.sh
index eaa2c1a2..646266f9 100644
--- a/usr/local/share/bastille/upgrade.sh
+++ b/usr/local/share/bastille/upgrade.sh
@@ -55,7 +55,7 @@ if [ "${TARGET}" = "ALL" ]; then
     error_exit "Batch upgrade is unsupported."
 fi
 
-if [ -f /bin/midnightbsd-version ]; then
+if [ -f "/bin/midnightbsd-version" ]; then
     echo -e "${COLOR_RED}Not yet supported on MidnightBSD.${COLOR_RESET}"
     exit 1
 fi
diff --git a/usr/local/share/bastille/verify.sh b/usr/local/share/bastille/verify.sh
index 1246cc00..5af8947c 100644
--- a/usr/local/share/bastille/verify.sh
+++ b/usr/local/share/bastille/verify.sh
@@ -36,7 +36,7 @@ bastille_usage() {
 }
 
 verify_release() {
-    if [ -f /bin/midnightbsd-version ]; then
+    if [ -f "/bin/midnightbsd-version" ]; then
         echo -e "${COLOR_RED}Not yet supported on MidnightBSD.${COLOR_RESET}"
         exit 1
     fi
@@ -69,7 +69,7 @@ verify_template() {
                 echo
                 error_exit "Template validation failed."
             ## if INCLUDE; recursive verify
-            elif [ ${_hook} = 'INCLUDE' ]; then
+            elif [ "${_hook}" = 'INCLUDE' ]; then
                 info "[${_hook}]:"
                 cat "${_path}"
                 echo
@@ -92,13 +92,13 @@ verify_template() {
                 done < "${_path}"
 
             ## if tree; tree -a bastille_template/_dir
-            elif [ ${_hook} = 'OVERLAY' ]; then
+            elif [ "${_hook}" = 'OVERLAY' ]; then
                 info "[${_hook}]:"
                 cat "${_path}"
                 echo
                 while read _dir; do
                     info "[${_hook}]:[${_dir}]:"
-                        if [ -x /usr/local/bin/tree ]; then
+                        if [ -x "/usr/local/bin/tree" ]; then
                             /usr/local/bin/tree -a "${_template_path}/${_dir}"
                         else
                            find "${_template_path}/${_dir}" -print | sed -e 's;[^/]*/;|___;g;s;___|; |;g'
@@ -114,7 +114,7 @@ verify_template() {
     done
 
     ## remove bad templates
-    if [ ${_hook_validate} -lt 1 ]; then
+    if [ "${_hook_validate}" -lt 1 ]; then
         error_notify "No valid template hooks found."
         error_notify "Template discarded."
         rm -rf "${bastille_template}"
@@ -122,7 +122,7 @@ verify_template() {
     fi
 
     ## if validated; ready to use
-    if [ ${_hook_validate} -gt 0 ]; then
+    if [ "${_hook_validate}" -gt 0 ]; then
         info "Template ready to use."
     fi
 }