diff --git a/cicd/sync_github_actions_workflows_to_adjacent_repos.sh b/cicd/sync_github_actions_workflows_to_adjacent_repos.sh
index 4280e5e1..0b7792bc 100755
--- a/cicd/sync_github_actions_workflows_to_adjacent_repos.sh
+++ b/cicd/sync_github_actions_workflows_to_adjacent_repos.sh
@@ -17,12 +17,27 @@ set -euo pipefail
 [ -n "${DEBUG:-}" ] && set -x
 srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-cd "$srcdir"
+# shellcheck disable=SC1090,SC1091
+. "$srcdir/lib/utils.sh"
 
-if [ $# -eq 0 ];then
-    echo "usage: <file1> <file2> ..."
-    exit 1
-fi
+# shellcheck disable=SC2034,SC2154
+usage_description="
+Syncs GitHub Actions CI/CD workflows in this repo to all adjacent repo checkouts listed in ../setup/repos.txt
+
+Quick way of updating GitHub Actions CI/CD workflows between repos
+
+and then using ../git/github_foreach_repo.sh to commit them
+"
+
+# used by usage() in lib/utils.sh
+# shellcheck disable=SC2034
+usage_args="[<workflow_yaml_1> <workflow_yaml_2> ...]"
+
+help_usage "$@"
+
+cd "$srcdir/../.github/workflows"
+
+tmpfile="$(mktemp)"
 
 sync_file(){
     local filename="$1"
@@ -32,26 +47,43 @@ sync_file(){
         dir="$repo"
     fi
     dir="$(tr '[:upper:]' '[:lower:]' <<< "$dir")"
-    if ! [ -d "../../$dir" ]; then
-        echo "WARNING: repo dir $dir not found, skipping..."
+    if ! [ -d "$srcdir/../../$dir" ]; then
+        timestamp "WARNING: repo dir $srcdir/../../$dir not found, skipping..."
         return 0
     fi
-    target="../../$dir/.github/$filename"
+    target="$srcdir/../../$dir/.github/workflows/$filename"
     targetdir="${target%/*}"
     mkdir -p -v "$targetdir"
-    if [ -f "$filename" ]; then
-        echo "syncing $filename -> $target"
-        perl -p -e "s/(DevOps-)?Bash-tools/$repo/i" "$filename" > "$target"
+    if [ -f "$target" ]; then
+        perl -p -e "s/(DevOps-)?Bash-tools/$repo/i" "$filename" > "$tmpfile"
+        tmpfile_checksum="$(cksum "$tmpfile" | awk '{print $1}')"
+        target_checksum="$(cksum "$target" | awk '{print $1}')"
+        if [ "$tmpfile_checksum" = "$target_checksum" ]; then
+            log "Skipping GitHub Actions CI/CD Config Sync for file due to same checksum: $filename"
+            return 0
+        fi
+        if ! QUIET=1 "$srcdir/../bin/diff_line_threshold.sh" "$filename" "$target"; then
+            timestamp "Skipping GitHub Actions CI/CD Config Sync for file due to large diff: $filename"
+            return 0
+        fi
+        timestamp "Syncing $filename -> $target"
+        mv "$tmpfile" "$target"
     else
-        echo "file not found: $filename. Skipping..."
+        log "File not found: $target. Skipping..."
     fi
 }
 
-sed 's/#.*//; s/:/ /' ../setup/repos.txt |
+sed 's/#.*//; s/:/ /' "$srcdir/../setup/repos.txt" |
 grep -v -e bash-tools \
         -e '^[[:space:]]*$' |
 while read -r repo dir; do
-    for filename in "$@"; do
-        sync_file "$filename" "$repo" "$dir"
-    done
+    if [ $# -gt 1 ]; then
+        for filename in "$@"; do
+            sync_file "$filename" "$repo" "$dir"
+        done
+    else
+        for filename in *.yaml; do
+            sync_file "$filename" "$repo" "$dir"
+        done
+    fi
 done