6 DFU, Storage_Mgmt, High Performance disk/file utility.  : DFU Disk and File Utilities is a high performance utility 5 developed to perform routine maintenance and special  8 purpose operations on disks, files and directories. The 6 functionality offered by DFU is not or only partially 6 available through other DCL commands or VMS utilities.    Available functions :   - DEFRAGMENT one or more files 8  - DELETE files by file-id; delete directory(trees) fast5  - DIRECTORY functions : COMPRESS or DUMP directories ;                        : search directories for files with  :                           multiple versions , alias files .                           or empty directories1                        : create directories with  +                           preallocated size 2  - REPORT disk for file, freespace and disk usage      statistics  &  - SEARCH very fast for specific files$  - SET : change many file attributes  - UNDELETE files +  - VERIFY and REBUILD of the disk structure 
 ! end-of-text 