... How can I remove the useless files? As I found from experiment and by reading "man rm", rm will not touch anything which begins with "." ... Sure it will: rm doesn't care about leading dots. Be carefult though: since it doesn't care, you can get into a lot of trouble. For example, NEVER DO: rm -R .* Unless you want everything in your current directory deleted (:-). The ls command and its ilk don't normally show files starting with a dot, but you can add the -a option to do so. Also, there may be permissions issues making it appear as if rm has problems deleting such a file. Craig