VMS Help DEASSIGN  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Cancels a logical name assignment that was made with one of
    the following commands: ALLOCATE, ASSIGN, DEFINE, or MOUNT.
    The DEASSIGN command also deletes a logical name table that was
    created with the CREATE/NAME_TABLE command.

    Deassigns a logical queue from a printer or terminal queue and
    stops the logical queue (see /QUEUE).

    Format

      DEASSIGN  [logical-name[:]]

1 - Parameter

 logical-name[:]

    Specifies the logical name to be deassigned. Logical names can
    have from 1 to 255 characters. If the logical name contains
    any characters other than alphanumerics, dollar signs ($),
    or underscores (_),  enclose it in quotation marks (" "). The
    logical-name parameter is required unless you use the /ALL
    qualifier.

    If the logical-name parameter ends with a colon (:),  the command
    interpreter ignores the colon. (Note that the ASSIGN and ALLOCATE
    commands remove a trailing colon, if present, from a logical name
    before placing the name in a logical name table.) If the logical
    name contains one or more trailing colons, you must append one
    additional colon to the DEASSIGN logical-name parameter (for
    example, type DEASSIGN FILE:: to deassign the logical name
    FILE:).

    To delete a logical name table, specify the table name as the
    logical-name parameter. You must also use the /TABLE qualifier to
    indicate the logical name directory table where the table name is
    entered.

2 - Qualifiers

 2.1 - /ALL

    Deletes all logical names in the same or an outer (less
    privileged) access mode. If no logical name table is specified,
    the default is the process table, LNM$PROCESS. If you specify the
    /ALL qualifier, you cannot enter a logical-name parameter.

 2.2 - /EXECUTIVE_MODE

    Requires SYSNAM (system logical name) privilege to deassign
    executive-mode logical names.

    Deletes only entries that were created in the specified mode
    or an outer (less privileged) mode. If you do not have SYSNAM
    privilege for executive mode, a supervisor-mode operation is
    assumed.

 2.3 - /GROUP

    Requires GRPNAM (group logical name) or SYSPRV privilege to
    delete entries from the group logical name table.

    Indicates that the specified logical name is in the group
    logical name table. The /GROUP qualifier is synonymous with the
    /TABLE=LNM$GROUP qualifier.

 2.4 - /JOB

    Indicates that the specified logical name is in the jobwide
    logical name table. The /JOB qualifier is synonymous with the
    /TABLE=LNM$JOB qualifier. If you do not explicitly specify a
    logical name table, the default is the /PROCESS qualifier.

    You should not deassign jobwide logical name entries that were
    made by the system at login time, for example, SYS$LOGIN,
    SYS$LOGIN_DEVICE, and SYS$SCRATCH. However, if you assign new
    equivalence names for these logical names (that is, create new
    logical names in outer access modes), you can deassign the names
    you explicitly created.

 2.5 - /PROCESS

       /PROCESS (default)

    Indicates that the specified logical name is in the process
    logical name table. The /PROCESS qualifier is synonymous with
    the /TABLE=LNM$PROCESS qualifier.

    You cannot deassign logical name table entries that were made by
    the command interpreter, for example, SYS$INPUT, SYS$OUTPUT, and
    SYS$ERROR. However, if you assign new equivalence names for these
    logical names (that is, create new logical names in outer access
    modes), you can deassign the names you explicitly created.

 2.6 - /SUPERVISOR_MODE

       /SUPERVISOR_MODE (default)

    Deletes entries in the specified logical name table that were
    created in supervisor mode. If you specify the /SUPERVISOR_MODE
    qualifier, the DEASSIGN command also deassigns user-mode entries
    with the same name.

 2.7 - /SYSTEM

    Indicates that the specified logical name is in the system
    logical name table. The /SYSTEM qualifier is synonymous with
    the /TABLE=LNM$SYSTEM qualifier.

 2.8 - /TABLE

       /TABLE=name

    Specifies the table from which the logical name is to be deleted.
    Defaults to LNM$PROCESS. The table can be the process, group,
    job, or system table, one of the directory tables, or the name
    of a user-created table. (The process, job, group, and system
    logical name tables should be referred to by the logical names
    LNM$PROCESS, LNM$JOB, LNM$GROUP, and LNM$SYSTEM, respectively.)

    The /TABLE qualifier also can be used to delete a logical name
    table. To delete a process-private table, enter the following
    command:

    $ DEASSIGN/TABLE=LNM$PROCESS_DIRECTORY table-name

    To delete a shareable table, enter the following command:

    $ DEASSIGN/TABLE=LNM$SYSTEM_DIRECTORY table-name

    To delete a shareable logical name table, you must have delete
    (D) access to the table or write (W) access to the directory
    table in which the name of the shareable table is cataloged.

    If you do not explicitly specify the /TABLE qualifier, the
    default is the /TABLE=LNM$PROCESS qualifier.

 2.9 - /USER_MODE

    Deletes entries in the process logical name table that were
    created in user mode. If you specify the /USER_MODE qualifier,
    the DEASSIGN command can deassign only user-mode entries. Also,
    user-mode logical names are automatically deleted when invoking
    and exiting a command procedure.

3 - Examples

    1.$ DEASSIGN MEMO

      The DEASSIGN command in this example deassigns the process
      logical name MEMO.

    2.$ DEASSIGN/ALL

      The DEASSIGN command in this example deassigns all process
      logical names that were created in user and supervisor mode.
      This command does not, however, delete the names that were
      placed in the process logical name table in executive mode by
      the command interpreter (for example, SYS$INPUT, SYS$OUTPUT,
      SYS$ERROR, SYS$DISK, and SYS$COMMAND).

    3.$ DEASSIGN/TABLE=LNM$PROCESS_DIRECTORY TAX

      The DEASSIGN command in this example deletes the logical name
      table TAX, and any descendant tables. When you delete a logical
      name table, you must specify either the /TABLE=LNM$PROCESS_
      DIRECTORY or the /TABLE=LNM$SYSTEM_DIRECTORY qualifier, because
      the names of all tables are contained in these directories.

    4.$ ASSIGN USER_DISK:   COPY
      $ SHOW LOGICAL COPY
         "COPY" = "USER_DISK:" (LNM$PROCESS_TABLE)
      $ DEASSIGN COPY

      The ASSIGN command in this example equates the logical name
      COPY with the device USER_DISK and places the names in the
      process logical name table. The DEASSIGN command deletes the
      logical name.

    5.$ DEFINE SWITCH:  TEMP
      $ DEASSIGN SWITCH::

      The DEFINE command in this example places the logical name
      SWITCH: in the process logical name table. The trailing
      colon is retained as part of the logical name. Two colons
      are required on the DEASSIGN command to delete this logical
      name because the DEASSIGN command removes one trailing colon,
      and the other colon is needed to match the characters in the
      logical name.

    6.$ ASSIGN/TABLE=LNM$GROUP DKA1: GROUP_DISK
      $ DEASSIGN/PROCESS/GROUP GROUP_DISK

      The ASSIGN command in this example places the logical name
      GROUP_DISK in the group logical name table. The DEASSIGN
      command specifies conflicting qualifiers; because the /GROUP
      qualifier is last, the name is successfully deassigned.

    7.$ ASSIGN DALLAS::USER_DISK:   DATA
         .
         .
         .
      $ DEASSIGN DATA

      The ASSIGN command in this example associates the logical name
      DATA with the device specification USER_DISK on remote node
      DALLAS. Subsequent references to the logical name DATA result
      in references to the disk on the remote node. The DEASSIGN
      command cancels the logical name assignment.

4 - /QUEUE

    Deassigns a logical queue from a printer or terminal queue and
    stops the logical queue. The DEASSIGN/QUEUE command cannot be
    used with batch queues.

    Requires manage (M) access to the queue.

    Format

      DEASSIGN/QUEUE  logical-queue-name[:]

 4.1 - Parameter

 logical-queue-name[:]

    Specifies the name of the logical queue that you want to deassign
    from a specific printer or terminal queue.

 4.2 - Example

  $ ASSIGN/QUEUE LPA0  ASTER
     .
     .
     .
  $ DEASSIGN/QUEUE  ASTER
  $ ASSIGN/MERGE LPB0  ASTER

      The ASSIGN/QUEUE command in this example associates the logical
      queue ASTER with the print queue LPA0. Later, you deassign the
      logical queue with the DEASSIGN/QUEUE command. The ASSIGN/MERGE
      command reassigns the jobs from ASTER to the print queue LPB0.