diff --git a/readme.md b/readme.md
index bb48033..8d53d3c 100644
--- a/readme.md
+++ b/readme.md
@@ -97,8 +97,11 @@ from various contexts of CA, CI and OCI / OS.
 
 ## Tasks
 
+* try git repo url variable first for shunit
+
 ### sh
 
+* implement substeps
 * review repositories handling for systems
   * opensuse
     * codecs repository
@@ -132,6 +135,7 @@ from various contexts of CA, CI and OCI / OS.
   * .sh
     * maximum line length
 * detect ssh private key type
+* implement substeps
 * list sys.path
 * set workflow templates
   * actions
diff --git a/spcd.sh b/spcd.sh
index 035717e..9301941 100644
--- a/spcd.sh
+++ b/spcd.sh
@@ -739,8 +739,9 @@ ${spcd_ipm__target}"
 }
 
 spcd_install_packages() {
+    spcd_step "Install packages"
     # epel
-    spcd_step "Install EPEL"
+    spcd_substep "Install EPEL"
     case "${SPCD_OS_ID}" in
     "${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}")
         spcd_install_package "epel-release"
@@ -754,36 +755,13 @@ spcd_install_packages() {
     *) ;;
     esac
     # bats
-    spcd_step "Install BATS"
+    spcd_substep "Install BATS"
     spcd_install_package "bats"
     # graphviz
-    spcd_step "Install GraphViz"
+    spcd_substep "Install GraphViz"
     spcd_install_package "graphviz"
-    # plantuml
-    spcd_step "Install PlantUML"
-    spcd_install_package "plantuml"
-    # rsync
-    spcd_step "Install Rsync"
-    spcd_install_package "rsync"
-    # shell check
-    spcd_step "Install ShellCheck"
-    case "${SPCD_PM}" in
-    "${SPCD_PM_DNF}" | "${SPCD_PM_ZYPPER}")
-        spcd_install_package "ShellCheck"
-        ;;
-    *) spcd_install_package "shellcheck" ;;
-    esac
-    # shfmt
-    spcd_step "Install ShellFormat"
-    case "${SPCD_OS_ID}" in
-    "${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}") ;;
-    "${SPCD_OS_DEBIAN}")
-        [ "${SPCD_OS_VERSION}" != "bullseye" ] && spcd_install_package "shfmt"
-        ;;
-    *) spcd_install_package "shfmt" ;;
-    esac
-    # ssh
-    spcd_step "Install SSH"
+    # openssh
+    spcd_substep "Install OpenSSH"
     case "${SPCD_PM}" in
     "${SPCD_PM_APK}" | "${SPCD_PM_APT}")
         spcd_install_package "openssh-client"
@@ -794,6 +772,29 @@ spcd_install_packages() {
     "${SPCD_PM_PACMAN}") spcd_install_package "openssh" ;;
     *) ;;
     esac
+    # plantuml
+    spcd_substep "Install PlantUML"
+    spcd_install_package "plantuml"
+    # rsync
+    spcd_substep "Install Rsync"
+    spcd_install_package "rsync"
+    # shell check
+    spcd_substep "Install ShellCheck"
+    case "${SPCD_PM}" in
+    "${SPCD_PM_DNF}" | "${SPCD_PM_ZYPPER}")
+        spcd_install_package "ShellCheck"
+        ;;
+    *) spcd_install_package "shellcheck" ;;
+    esac
+    # shfmt
+    spcd_substep "Install ShellFormat"
+    case "${SPCD_OS_ID}" in
+    "${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}") ;;
+    "${SPCD_OS_DEBIAN}")
+        [ "${SPCD_OS_VERSION}" != "bullseye" ] && spcd_install_package "shfmt"
+        ;;
+    *) spcd_install_package "shfmt" ;;
+    esac
 }
 
 spcd_write_python_module() {
@@ -827,6 +828,13 @@ ${SPCD_PYTHON_ALIAS} / ${spcd_stp__name}"
 
 # functions
 
+spcd_banner() {
+    echo "\
+${SPCD_DOWN}
+${SPCD_VERT} ${*}
+${SPCD___UP}"
+}
+
 spcd_cat() {
     spcd_cat__file="${1}"
     if [ -n "${spcd_cat__file}" ]; then
@@ -944,10 +952,19 @@ spcd_split() {
 
 spcd_step() {
     SPCD_STEP=$((SPCD_STEP + 1))
-    echo "\
-${SPCD_DOWN}
-${SPCD_VERT} ${SPCD_STEP} ${*}
-${SPCD___UP}"
+    SPCD_STEP_TEXT="${*}"
+    unset SPCD_SUBSTEP
+    spcd_banner "${SPCD_STEP}" "${SPCD_VERT}" "${SPCD_STEP_TEXT}"
+}
+
+spcd_substep() {
+    SPCD_SUBSTEP=$((SPCD_SUBSTEP + 1))
+    spcd_banner \
+    "${SPCD_STEP}.${SPCD_SUBSTEP}" \
+    "${SPCD_VERT}" \
+    "${SPCD_STEP_TEXT}" \
+    "${SPCD_VERT}" \
+    "${*}"
 }
 
 spcd_write() {