diff --git a/automataCI/services/archive/ar.ps1 b/automataCI/services/archive/ar.ps1
index d0f3ad8b..24ab39c0 100644
--- a/automataCI/services/archive/ar.ps1
+++ b/automataCI/services/archive/ar.ps1
@@ -9,15 +9,16 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
-. "${env:PROJECT_PATH_ROOT}\${env:PROJECT_PATH_AUTOMATA}\services\io\os.ps1"
+. "${env:LIBS_AUTOMATACI}\services\io\os.ps1"
+. "${env:LIBS_AUTOMATACI}\services\io\fs.ps1"
 
 
 
 
 function AR-Is-Available {
 	# execute
-	$__process = Get-Command "ar" -ErrorAction SilentlyContinue
-	if (-not ($__process)) {
+	$___process = OS-Is-Command-Available "ar"
+	if ($___process -ne 0) {
 		return 1
 	}
 
@@ -31,26 +32,30 @@ function AR-Is-Available {
 
 function AR-Create {
 	param (
-		[string]$__name,
-		[string]$__list
+		[string]$___name,
+		[string]$___list
 	)
 
 
 	# validate input
-	if ([string]::IsNullOrEmpty($__name) -or [string]::IsNullOrEmpty($__list)) {
+	if (($(STRINGS-Is-Empty "${___name}") -eq 0) -or
+		($(STRINGS-Is-Empty "${___list}") -eq 0)) {
 		return 1
 	}
 
-	$__process = AR-Is-Available
-	if ($__process -ne 0) {
+	$___process = AR-Is-Available
+	if ($___process -ne 0) {
 		return 1
 	}
 
 
 	# execute
-	$__process = OS-Exec "ar" "r ${__name} ${__list}"
+	$___process = OS-Exec "ar" "r ${___name} ${___list}"
+	if ($___process -ne 0) {
+		return 1
+	}
 
 
 	# report status
-	return $__process
+	return 0
 }
diff --git a/automataCI/services/archive/ar.sh b/automataCI/services/archive/ar.sh
index fe5a7abb..de1995ea 100644
--- a/automataCI/services/archive/ar.sh
+++ b/automataCI/services/archive/ar.sh
@@ -10,12 +10,20 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations under
 # the License.
-AR::is_available() {
+. "${LIBS_AUTOMATACI}/services/io/os.sh"
+. "${LIBS_AUTOMATACI}/services/io/strings.sh"
+
+
+
+
+AR_Is_Available() {
         # execute
-        if [ -z "$(type -t ar)" ]; then
+        OS::is_command_available "ar"
+        if [ $? -ne 0 ]; then
                 return 1
         fi
 
+
         # report status
         return 0
 }
@@ -23,25 +31,30 @@ AR::is_available() {
 
 
 
-AR::create() {
-        # __name="$1"
-        # __list="$2"
+AR_Create() {
+        #___name="$1"
+        #___list="$2"
 
 
         # validate input
-        if [ -z "$1" ] || [ -z "$2" ]; then
+        if [ $(STRINGS_Is_Available "$1") -eq 0 ] ||
+                [ $(STRINGS_Is_Available "$2") -eq 0 ]; then
+                return 1
+        fi
+
+        AR_Is_Available
+        if [ $? -ne 0 ]; then
                 return 1
         fi
 
 
         # execute
         ar r "$1" $2
+        if [ $? -ne 0 ]; then
+                return 1
+        fi
 
 
         # report status
-        if [ $? -eq 0 ]; then
-                return 0
-        fi
-
-        return 1
+        return 0
 }
diff --git a/automataCI/services/compilers/deb.sh b/automataCI/services/compilers/deb.sh
index c6518655..37ca38df 100644
--- a/automataCI/services/compilers/deb.sh
+++ b/automataCI/services/compilers/deb.sh
@@ -86,7 +86,7 @@ DEB_Create_Archive() {
 
         # archive into deb
         ___file="package.deb"
-        AR::create "$___file" "debian-binary control.tar.xz data.tar.xz"
+        AR_Create "$___file" "debian-binary control.tar.xz data.tar.xz"
         if [ $? -ne 0 ]; then
                 cd "$___current_path" && unset ___current_path
                 return 1
@@ -472,7 +472,7 @@ DEB_Is_Available() {
                 return 1
         fi
 
-        AR::is_available
+        AR_Is_Available
         if [ $? -ne 0 ]; then
                 return 1
         fi