Process Explorer is the tool to use when you really need information about a process and what file or folder that process has open. This tool is a tremendous help in discovering what application has a file or folder locked — especially when you can't seem to eject an external drive.
Jack Wallen is an award-winning writer for TechRepublic and Linux.com. He’s an avid promoter of open source and the voice of The Android Expert. For more news about Jack Wallen, visit his website jackwallen.com.