




Command:   de - disk editor
Syntax:    de [-w] block_device
           de -r file
Flags:     -r  Recover a file that has been removed
           -w  Enable writing, so device can be modified
Examples:  de -r /usr/ast/prog.c    #   Undo   the   effects   of:    rm
                                      /usr/ast/prog.c
           de -w /dev/fd0           # Edit /dev/fd0 for writing

     De is a program for system administrators that allows disks  to  be
inspected block by block.  A variety of display options and commands are
available, as described in Chap. 9.  For a summary,  start  the  program
and  type h for help.  The program can also restore files that have just
been removed by rm, provided  that  the  i-node  and  blocks  are  still
intact.   Another  feature is searching disks for ASCII strings, to help
locate things after a crash.  Finally,  individual  disk  words  can  be
changed, for example, the sizes of block special files.









































                                                                        

