diff --git a/.local/bin/scripts/clean b/.local/bin/scripts/clean
index 7125eb3..d970c7d 100755
--- a/.local/bin/scripts/clean
+++ b/.local/bin/scripts/clean
@@ -21,7 +21,7 @@ find "$dir" -maxdepth 2 -not -name ".stfolder" -empty -printf "Removing empty %p
 find -L -maxdepth 2 -type l -printf "Removing broken symlink %p\n" -delete
 
 highlight "e :: recursively remove empty folders and files"
-[[ $1 =~ "e" ]] && find -empty -not -name ".stfolder" -empty -printf "Removing empty %p\n" -delete
+[[ $1 =~ "e" ]] && find \( -name ".stfolder" -o -name ".*keep" -o -name ".git" \) -prune -o -empty -printf "Removing empty %p\n" -exec rm -d {} +
 
 for k in "${!_clean_map[@]}"; do
 	folder="${_clean_map[$k]}"
@@ -49,9 +49,10 @@ if [[ $1 =~ "d" ]]; then
 		-type d \( -name 'cache' $(echo $DIRS_GENERATED | sed 's|-x \([^ ]\+\)|-o -name \1|g') \) \
 		-print -exec rm $i -r {} + -prune
 	echo -n "  " && highlight "build directories"
-	find \( -name ".git" -o -path "*/mixxx/build" -o -name "Leaflet" -o -name "www" -o -name "src" \) \
+	find \( -name ".git" -o -path "*/mixxx/build" -o -name "app" -o -name "Leaflet" -o -name "www" -o -name "src" \) \
 		-prune -o -name "build" -type d \
 		-print -exec rm -rI {} + -prune
+	# TODO consider gitignore / use git clean
 fi
 highlight "g :: clean gradle caches"
 if [[ $1 =~ "g" ]]; then
@@ -61,7 +62,7 @@ fi
 
 highlight "c :: clean electron caches"
 [[ $1 =~ "c" ]] && find "$dir$(expr "${XDG_CONFIG_HOME/$HOME}" \| "/.config")" \
-		-type d -name "*Cache" -print -exec rm $i -r {} + -prune
+		-type d -name "*Cache*" -print -exec rm $i -r {} + -prune
 
 if test -f "/var/log/apt/history.log"; then
 	aptclean_cur=$(cat "/var/log/apt/history.log" | wc -l)
diff --git a/.local/bin/scripts/delbig b/.local/bin/scripts/delbig
index ca5abb8..ec59b32 100755
--- a/.local/bin/scripts/delbig
+++ b/.local/bin/scripts/delbig
@@ -1,3 +1,3 @@
 #!/bin/sh
 # Find and remove sizeable files
-find -size +5M -print -exec rm -I {} +
+find -size +${1:-50}M -exec rm -vi {} +
diff --git a/.local/bin/scripts/denest b/.local/bin/scripts/denest
index 165af13..c469f37 100755
--- a/.local/bin/scripts/denest
+++ b/.local/bin/scripts/denest
@@ -1,3 +1,12 @@
-#!/bin/sh
-# Remove one level of folders
-find -mindepth 1 -maxdepth 1 -exec sh -c 'mv -nv {}/* . && rm -dv {}' \;
+#!/bin/sh -e
+# Flatten folder hierarchy
+# Args: depth
+find -mindepth 2 -maxdepth ${depth:-2} -depth -type d "$@" | while read folder; do
+	newname="$(echo "$folder" | sed 's|^./||;s|/|_|g')"
+	mv -v "$folder" "$newname"
+	parent="$(dirname "$folder")"
+	test "$(basename "$folder")" = "$(basename "$parent")" &&
+		rm -d "$parent" &&
+		mv -v "$newname" "$parent"
+done
+find -maxdepth ${depth:-2} -empty -type d -delete
diff --git a/.local/bin/scripts/duploc b/.local/bin/scripts/duploc
index a2f378a..0503069 100755
--- a/.local/bin/scripts/duploc
+++ b/.local/bin/scripts/duploc
@@ -1,11 +1,11 @@
 #!/bin/sh -e
 # Delete files under current or given path which exist elsewhere as listed in the locate database
 # Matches first by name, then by checksum (currently inefficiently via md5)
-case "$1" in ([0-9]) size=$1; shift;; esac
-find "$@" -size +${size:-5}M -type f -exec sh -c "IFS=$'\n'"'
+case $1 in ([0-9]|[0-9][0-9]) threshold=$1; shift;; esac
+find "$@" -size +${threshold:-50}M -type f -exec sh -c "IFS=$'\n'"'
   filepath="{}"
   target="$(basename "$filepath" | synct-unarchive)"
   highlight "$filepath"
   for existing in $(locate -b "$target")
-  do test "$(realpath "$target")" != "$(realpath "$existing")" -a -f "$existing" -a "$(md5sum "$existing" | cut -d\  -f1)" = "$(md5sum "$filepath" | cut -d\  -f1)" && echo "Found duplicate at $existing" && rm -vi "$filepath" && break
+  do test "$(realpath "$target")" != "$(realpath "$existing")" -a -f "$existing" && test "$(md5sum "$existing" | cut -d\  -f1)" = "$(md5sum "$filepath" | cut -d\  -f1)" && echo "Found duplicate at $existing" && rm -vi "$filepath" && break
   done' \;