HP 3000 Manuals

REDO [ DBChange Plus User's Guide ] MPE/iX 5.0 Documentation


DBChange Plus User's Guide

REDO 

Allows a user to correct or modify the last DBChange command entered.

Syntax 

     R[EDO]

Description 

Use this command to display the last DBChange command entered.  Use the
associated subcommands to correct or change the displayed command.  The
REDO command applies only to the last command entered and is available
only in interactive mode.  A warning is issued if REDO is used in batch
mode.

Subcommands 

D                   deletes the character above the cursor.  If D is
                    repeated, each character above each D is deleted.
                    The D and I subcommands can be used in conjunction,
                    to delete characters and then insert new characters.

H                   lists all the valid editing subcommands.

I                   inserts one or more characters immediately preceding
                    the character above the cursor.  The D and I
                    subcommands can be used in conjunction, to delete
                    characters and then insert new characters.

L                   lists the current command as it is currently edited.

R                   replaces the characters above the cursor with new
                    characters.  If one character is entered, the
                    character above the cursor is replaced; if two
                    characters are entered, two characters (the character
                    above the cursor and the character to the right) are
                    replaced; and so on for additional characters.  R is
                    the default subcommand and is only required when the
                    first character to be replaced is a D, H, I, L, R, U,
                    or X.

U                   restores the line being corrected to its original
                    form.

X                   executes the edited version of a command (same as a
                    carriage return).

Example 

     >print shcema                 <---- Incorrect command is entered 
     Invalid command  (DBC 508).
     >redo                         <---- Request to REDO command 
       print shcema                <---- Command is displayed for corrections 
            rch                    <---- Error is deleted and replaced by correction 
       print schema                <---- Corrected command is displayed 

In this example, the PRINT SCHEMA command is corrected using the R
subcommand.



MPE/iX 5.0 Documentation