diff --git a/customscripts/extension_study.sh b/customscripts/extension_study.sh
new file mode 100644
index 0000000..8c168b2
--- /dev/null
+++ b/customscripts/extension_study.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+tmp_file="./exts.tmp"
+exts_study_file="./extension_study.txt"
+
+echo "" > "$tmp_file"
+find files -type f -exec bash -c "echo \"{}\" | awk -F. '{print \$NF}' | tee -a \"$tmp_file\"" \;
+cat "$tmp_file" | sort | uniq > "$exts_study_file"
+rm -f "$tmp_file"
+
+echo "DONE! Saved to $exts_study_file"
\ No newline at end of file