diff --git a/util/GHA-delete-GNU-workflow-logs.sh b/util/GHA-delete-GNU-workflow-logs.sh
index f7406b831..ebeb7cfe8 100755
--- a/util/GHA-delete-GNU-workflow-logs.sh
+++ b/util/GHA-delete-GNU-workflow-logs.sh
@@ -2,10 +2,10 @@
 
 # spell-checker:ignore (utils) gitsome jq ; (gh) repos
 
-ME="${0}"
-ME_dir="$(dirname -- "${ME}")"
-ME_parent_dir="$(dirname -- "${ME_dir}")"
-ME_parent_dir_abs="$(realpath -mP -- "${ME_parent_dir}")"
+# ME="${0}"
+# ME_dir="$(dirname -- "${ME}")"
+# ME_parent_dir="$(dirname -- "${ME_dir}")"
+# ME_parent_dir_abs="$(realpath -mP -- "${ME_parent_dir}")"
 
 # ref: <https://stackoverflow.com/questions/57927115/anyone-know-a-way-to-delete-a-workflow-from-github-actions>
 
@@ -33,12 +33,17 @@ if [ -z "${GH}" ] || [ -z "${JQ}" ]; then
     exit 1
 fi
 
-dry_run=true
+case "${dry_run}" in
+    '0' | 'f' | 'false' | 'no' | 'never' | 'none') unset dry_run ;;
+    *) dry_run="true" ;;
+esac
 
-USER_NAME=uutils
-REPO_NAME=coreutils
-WORK_NAME=GNU
+USER_NAME="${USER_NAME:-uutils}"
+REPO_NAME="${REPO_NAME:-coreutils}"
+WORK_NAME="${WORK_NAME:-GNU}"
 
 # * `--paginate` retrieves all pages
 # gh api --paginate "repos/${USER_NAME}/${REPO_NAME}/actions/runs" | jq -r ".workflow_runs[] | select(.name == \"${WORK_NAME}\") | (.id)" | xargs -n1 sh -c "for arg do { echo gh api repos/${USER_NAME}/${REPO_NAME}/actions/runs/\${arg} -X DELETE ; if [ -z "$dry_run" ]; then gh api repos/${USER_NAME}/${REPO_NAME}/actions/runs/\${arg} -X DELETE ; fi ; } ; done ;" _
-gh api "repos/${USER_NAME}/${REPO_NAME}/actions/runs" | jq -r ".workflow_runs[] | select(.name == \"${WORK_NAME}\") | (.id)" | xargs -n1 sh -c "for arg do { echo gh api repos/${USER_NAME}/${REPO_NAME}/actions/runs/\${arg} -X DELETE ; if [ -z "$dry_run" ]; then gh api repos/${USER_NAME}/${REPO_NAME}/actions/runs/\${arg} -X DELETE ; fi ; } ; done ;" _
+gh api "repos/${USER_NAME}/${REPO_NAME}/actions/runs" |
+    jq -r ".workflow_runs[] | select(.name == \"${WORK_NAME}\") | (.id)" |
+    xargs -n1 sh -c "for arg do { echo gh api repos/${USER_NAME}/${REPO_NAME}/actions/runs/\${arg} -X DELETE ; if [ -z \"${dry_run}\" ]; then gh api repos/${USER_NAME}/${REPO_NAME}/actions/runs/\${arg} -X DELETE ; fi ; } ; done ;" _
diff --git a/util/build-code_coverage.sh b/util/build-code_coverage.sh
index 083248d96..4082bc13d 100755
--- a/util/build-code_coverage.sh
+++ b/util/build-code_coverage.sh
@@ -8,7 +8,8 @@
 
 FEATURES_OPTION="--features feat_os_unix"
 
-ME_dir="$(dirname -- "$(readlink -fm -- "$0")")"
+ME="${0}"
+ME_dir="$(dirname -- "$(readlink -fm -- "${ME}")")"
 REPO_main_dir="$(dirname -- "${ME_dir}")"
 
 cd "${REPO_main_dir}" &&
diff --git a/util/show-code_coverage.sh b/util/show-code_coverage.sh
index 4be056ccc..3f51462c9 100755
--- a/util/show-code_coverage.sh
+++ b/util/show-code_coverage.sh
@@ -2,7 +2,8 @@
 
 # spell-checker:ignore (vars) OSID binfmt
 
-ME_dir="$(dirname -- "$(readlink -fm -- "$0")")"
+ME="${0}"
+ME_dir="$(dirname -- "$(readlink -fm -- "${ME}")")"
 REPO_main_dir="$(dirname -- "${ME_dir}")"
 
 export COVERAGE_REPORT_DIR="${REPO_main_dir}/target/debug/coverage-nix"