find
Find all files from current directory and subdirectories
find . -name '*.doc' -print
Result
report.doc
somedoc.doc
Finding files by date: http://www.cyberciti.biz/faq/howto-finding-files-by-date/
du
Show total disk usage of a directory:
du -sh /tmp/somedir
The tools I use for computer forensics.
Windows
Linux
Casting the array obtained by invoking the toArray() method on a collection yields a ClassCastException.
For example:
String[] strings = listOfStrings.toArray();
will throw the ClassCastException.
The trick is to use the overloaded version of toArray(), which takes an array as parameter. This the javadoc description of the method
toArray(T[] a)
"Returns an array containing all of the elements in this list in the correct order; the runtime type of the returned array is that of the specified array."
The solution is therefore to do this:
String[] sv = (String[])v.toArray(new String[0]);