diff --git a/.zshrc.d/fnr.zsh b/.zshrc.d/fnr.zsh
new file mode 100644
index 0000000..09c11dc
--- /dev/null
+++ b/.zshrc.d/fnr.zsh
@@ -0,0 +1,48 @@
+fnr () {
+        FIND="$1"
+        REPLACE="$2"
+        FILTER="$3"
+        if [ -z "${FIND}" ] || [ -z "${REPLACE}" ]
+        then
+                echo "ERR: must include two parameters for find and replace" >&2
+                echo "Usage: fnr <find_string> <replace_string> [filter]" >&2
+                return 1
+        fi
+
+        if command -v rg 2>&1 > /dev/null
+        then
+                if [ -z "${FILTER}" ]
+                then
+                        rg --files --hidden --glob '!.git/' | rg "${FIND}" | sort -r | while read -r file; do
+                                dir=$(dirname "$file")
+                                base=$(basename "$file")
+                                new_base=$(echo "$base" | sed "s/${FIND}/${REPLACE}/g")
+                                [ "$base" != "$new_base" ] && mv -v "$file" "$dir/$new_base"
+                        done
+                else
+                        rg --files --hidden --glob '!.git/' | rg "${FIND}" | rg -i "$FILTER" | sort -r | while read -r file; do
+                                dir=$(dirname "$file")
+                                base=$(basename "$file")
+                                new_base=$(echo "$base" | sed "s/${FIND}/${REPLACE}/g")
+                                [ "$base" != "$new_base" ] && mv -v "$file" "$dir/$new_base"
+                        done
+                fi
+        else
+                if [ -z "${FILTER}" ]
+                then
+                        find . -name '.git' -prune -o -type f -print | grep "${FIND}" | sort -r | while read -r file; do
+                                dir=$(dirname "$file")
+                                base=$(basename "$file")
+                                new_base=$(echo "$base" | sed "s/${FIND}/${REPLACE}/g")
+                                [ "$base" != "$new_base" ] && mv -v "$file" "$dir/$new_base"
+                        done
+                else
+                        find . -name '.git' -prune -o -type f -print | grep "${FIND}" | grep -i "$FILTER" | sort -r | while read -r file; do
+                                dir=$(dirname "$file")
+                                base=$(basename "$file")
+                                new_base=$(echo "$base" | sed "s/${FIND}/${REPLACE}/g")
+                                [ "$base" != "$new_base" ] && mv -v "$file" "$dir/$new_base"
+                        done
+                fi
+        fi
+}