diff --git a/trash.sh b/trash.sh
index 2827255..f26192a 100644
--- a/trash.sh
+++ b/trash.sh
@@ -1,49 +1,50 @@
 #!/bin/bash
 # Trash Functions
 
-[ ! -d $HOME/.trash/ ] && mkdir $HOME/.trash/
-FILEPATHS_FILE="$HOME/.trash/.filepaths"
-[ ! -f $FILEPATHS_FILE ] && touch $FILEPATHS_FILE
+[ ! -d "$HOME"/.trash/ ] && mkdir "$HOME"/.trash/
+FILE_PATHS_FILE="$HOME/.trash/.filepaths"
+[ ! -f "$FILE_PATHS_FILE" ] && touch "$FILE_PATHS_FILE"
 
-trash-list() {
-    ls -lrth $HOME/.trash/
+trash_list() {
+    ls -lrth "$HOME"/.trash/
 }
 
-trash-put() {
+trash_put() {
     for i in "$@"; do
         # Store old filepath for later restore
-        echo "$i $(readlink -f $i)" >> $FILEPATHS_FILE
+        echo "$i $(readlink -f $i)" >> "$FILE_PATHS_FILE"
     done
-    mv -uv $* $HOME/.trash/
+    mv -uv "$*" "$HOME"/.trash/
 }
 
-trash-empty() {
-    echo "Delete all $(ls -l $HOME/.trash/* | wc -l) files in trash?"
-    \rm -Ir $HOME/.trash/* && echo > $FILEPATHS_FILE
+trash_empty() {
+    echo "Delete all $(find "$HOME"/.trash/* | wc -l) files in trash?"
+    # shellcheck disable=SC2086
+    \rm -Ir $HOME/.trash/* && echo > "$FILE_PATHS_FILE"
 }
 
-trash-restore() {
+trash_restore() {
     for FILE_TO_RESTORE in "$@"; do
         # Get old filepath for restore
-        OLDPATH=$(grep $FILE_TO_RESTORE $FILEPATHS_FILE | cut -d ' ' -f2)
+        OLD_PATH=$(grep "$FILE_TO_RESTORE" "$FILE_PATHS_FILE" | cut -d ' ' -f2)
 
         # Move file to old filepath
-        mv -v $FILE_TO_RESTORE $OLDPATH
+        mv -v "$FILE_TO_RESTORE" "$OLD_PATH"
 
         # Replace / with \/ from string and remove filepath from file after move was successful
-        sed -i "/${FILE_TO_RESTORE////\\/}/d" $FILEPATHS_FILE
+        sed -i "/${FILE_TO_RESTORE////\\/}/d" "$FILE_PATHS_FILE"
     done
 }
 
-trash-rm() {
+trash_rm() {
     for FILE_TO_REMOVE in "$@"; do
-        if readlink -f $FILE_TO_REMOVE | grep "$HOME/.trash"; then
-            \rm -Ir $HOME/.trash/$FILE_TO_REMOVE && sed -i "/$FILE_TO_REMOVE/d" $FILEPATHS_FILE
+        if readlink -f "$FILE_TO_REMOVE" | grep "$HOME/.trash"; then
+            \rm -Ir "$HOME"/.trash/"$FILE_TO_REMOVE" && sed -i "/$FILE_TO_REMOVE/d" "$FILE_PATHS_FILE"
 		else
             echo "$i is not in Trash." && false
         fi
     done
 }
 
-alias trash='trash-put'
+alias trash='trash_put'
 alias rm='echo "This is not the command you are looking for. Use \rm instead"; false'