In Unix/Linux, run the Find command to search for an empty directory: find/path-depth-type d-empty www.2cto.com: find/path-depth-type f-empty find the file by name: find/path-name name_of_file find the file by extension: find/path-name "*. given_extension ": find/path-name '*. txt '-perm 644 searches for a file based on the permission attributes of the file: find/path-perm-permision_bits www.2cto.com without knowing the extension. Only the file name is used to find the file: find/path-name 'giveen _ name. * 'find the file that has been modified within 24 hours: find/path -Mtime n here n, 0 represents 24 hours, 1 represents 48 hours, 2 represents 72 hours. The same is true for n below. Find the files that have been retrieved from the memory in the last 24 hours: find-atime n www.2cto.com search for the files deleted by the Owner: find/path-user root: find/path-name mytestfile | xargs rmiCC Develop Center