Error on Installing oracle 10g patch in linux

After installing oracle 10g in Linux machine, I have install the patch Oracle-10.2.0.4.0.  The following error raised and could not continue.

This is the command I entered:
./runInstaller –silent –responseFile /home/oracle/10g-patch10205.rsp

Error Given: 

SEVERE:OUI-10029:You have specified a non-empty directory to install this product. It is recommended to specify either an empty or a non-existent directory. You may, however, choose to ignore this message if the directory contains Operating System generated files or subdirectories like lost+found.

You have to add the “force” command with the “./runInstaller “ command.

./runInstaller –silent –responseFile –force /home/oracle/10g-patch10205.rsp

Installation runs without any interruptions.