Museum

Home

Lab Overview

Retrotechnology Articles

⇒ Online Manual

Media Vault

Software Library

Restoration Projects

Artifacts Sought

EVE RECOVER_BUFFER — VMS 5.5

 RECOVER BUFFER

 Recovers a text buffer after a system failure, by using the buffer-change
 journal file for the buffer.

 The recovery restores only your text---it does NOT restore settings, key
 definitions, or the contents of system buffers (such as the Insert Here
 buffer) before the system failure.

 Steps:

 1.  If a system failure interrupts your editing session, invoke EVE again,
     using the DCL command EDIT/TPU.  You need not use the /RECOVER
     qualifier.

 2.  Use RECOVER BUFFER and specify the name of the buffer or file you want
     to recover, or the name of the journal file for the buffer.  For
     example, to recover the Main buffer, use the following command:

        Command: RECOVER BUFFER main

 3.  If the journal file for that buffer is available, EVE shows the
     following information and asks if you want to recover that buffer:

        *  Name of the buffer
        *  Original input file (if any) )for the buffer
        *  Output file (if any) for the buffer
        *  Source file (if any) for recovery
        *  Starting date and time of the editing session
        *  Journal file creation date and time

     If you want to recover the buffer, simply press RETURN.  (The recovery
     is usually quite fast.) Otherwise, type No, and press RETURN.

 4.  Repeat Step 2, if necessary, to recover another text buffer.

 Usage notes:

 o  You can recover buffers from different editing sessions.  For a list of
    all the journal files available, specify the asterisk wildcard (*):

       Command: RECOVER BUFFER *

    EVE then lists the available journal files so you can choose the one
    you want.  See help on Choices Buffer.

 o  The journal file name derives from the name of the buffer or file you
    were editing and the file type .TPU$JOURNAL.  For example, if you edit
    a file named MEMO.TXT, the journal file for that buffer is
    MEMO_TXT.TPU$JOURNAL.

 o  To recover all your buffers---that is, each buffer for which there is a
    journal file---use RECOVER BUFFER ALL.

 o  If you specify a buffer that already exists---typically, the Main
    buffer---EVE first deletes the buffer (prompting you to confirm the
    deletion, if necessary) before doing the recovery.

 o  If there is more than one version of a buffer-change journal file---for
    example, there may be two or more MAIN.TPU$JOURNAL files from different
    editing sessions---RECOVER BUFFER uses the highest version number
    available.

 o  The recovery does not re-create deleted files.  If you deleted or
    renamed the source file associated with a buffer-change journal file,
    the recovery fails.  The source file is either the file initially read
    into the buffer (if any), or the last version of the file written from
    the buffer before the system failure.

 +------------------------------  NOTE  -------------------------------+
 | Although journaling and recovery are quite reliable, the safest way |
 | to protect your work against a system failure is to write out your  |
 | edits frequently -- particularly during all-day editing sessions.   |
 +---------------------------------------------------------------------+

 Related topics:

    Journal Files     RECOVER BUFFER ALL     SET JOURNALING

Typewritten Software • bear@typewritten.org • Edmonds, WA 98026