Single quotes

src/freedombone

   echo '    if [ -d /home/$USERNAME/Maildir ]; then' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '      echo "Creating an email archive for $USERNAME"' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '      if [ ! -d /root/tempbackupemail/$USERNAME ]; then' >> /usr/bin/$BACKUP_SCRIPT_NAME
-  echo "        mkdir -p /root/tempbackupemail/$USERNAME" >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo '        mkdir -p /root/tempbackupemail/$USERNAME' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '      fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '      tar -czvf /root/tempbackupemail/$USERNAME/maildir.tar.gz /home/$USERNAME/Maildir' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '      echo "Backing up emails for $USERNAME"' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '        mkdir -p $USB_MOUNT/backup/mail/$USERNAME' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '      fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '      backup_directory_to_usb /root/tempbackupemail/$USERNAME mail/$USERNAME' >> /usr/bin/$BACKUP_SCRIPT_NAME
+  echo '      rm -rf /root/tempbackupemail/$USERNAME' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '    fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '  fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo 'done' >> /usr/bin/$BACKUP_SCRIPT_NAME
   echo '    if [ -d /home/$USERNAME/Maildir ]; then' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
   echo '      echo "Creating an email archive"' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
   echo '      if [ ! -d /root/backupemail/$USERNAME ]; then' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
-  echo "        mkdir -p /root/backupemail/$USERNAME" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
+  echo '        mkdir -p /root/backupemail/$USERNAME' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
   echo '      fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
   echo '      tar -czvf /root/backupemail/$USERNAME/maildir.tar.gz /home/$USERNAME/Maildir' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
   echo '      echo "Backing up emails for $USERNAME"' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME