Examples

   1.$ ASSIGN $DISK1:[CREMERS.MEMOS] MEMOSD

     The ASSIGN command in this example equates the partial file
     specification $DISK1:[CREMERS.MEMOS] to the logical name
     MEMOSD.

   2.$ ASSIGN/USER_MODE $DISK1:[FODDY.MEMOS]WATER.TXT TM1

     The ASSIGN command in this example equates the logical name TM1
     to a file specification. After the next image runs, the logical
     name is deassigned automatically.

   3.$ ASSIGN XXX1:[HEROLD]  ED
     $ PRINT  ED:TEST.DAT
     Job 274 entered on queue SYS$PRINT

     The ASSIGN command in this example associates the logical
     name ED with the directory name [HEROLD] on the disk XXX1.
     Subsequent references to the logical name ED result in the
     correspondence between the logical name ED and the disk and
     directory specified. The PRINT command queues a copy of the
     file XXX1:[HEROLD]TEST.DAT to the system printer.

   4.$ ASSIGN YYY2:  TEMP:
     $ SHOW LOGICAL TEMP
        "TEMP" = "YYY2:" (LNM$PROCESS_TABLE)
     $ DEASSIGN TEMP

     The ASSIGN command in this example equates the logical name
     TEMP to the device YYY2. TEMP is created in supervisor mode
     and placed in the process logical name table. The SHOW LOGICAL
     command verifies that the logical name assignment was made.
     Note that the logical name TEMP was terminated with a colon in
     the ASSIGN command, but that the command interpreter deleted
     the colon before placing the name in the logical name table.
     Thus, you can specify TEMP without a colon in the subsequent
     DEASSIGN command. You should omit the colon in the SHOW LOGICAL
     command (for example, SHOW LOGICAL TEMP).

   5.$ MOUNT TTT1: MASTER TAPE
     $ ASSIGN TAPE:NAMES.DAT PAYROLL
     $ RUN PAYROLL
        .
        .
        .

     The MOUNT command in this example establishes the logical name
     TAPE for the device TTT1, which has the volume labeled MASTER
     mounted on it. The ASSIGN command equates the logical name
     PAYROLL with the file named NAMES.DAT on the logical device
     TAPE. Thus, an OPEN request in a program referring to the
     logical name PAYROLL results in the correspondence between
     the logical name PAYROLL and the file NAMES.DAT on the tape
     whose volume label is MASTER.

   6.$ CREATE/NAME_TABLE TABLE1
     $ ASSIGN/TABLE=LNM$PROCESS_DIRECTORY TABLE1,-
     _$ LNM$PROCESS,LNM$JOB,LNM$GROUP,LNM$SYSTEM LNM$FILE_DEV
     $ ASSIGN/TABLE=TABLE1 -
     _$ /TRANSLATION_ATTRIBUTES=CONCEALED  DKA1:  WORK_DISK

     The CREATE/NAME_TABLE command in this example creates the
     process private logical name table TABLE1.

     The first ASSIGN command ensures that TABLE1 is searched
     first in any logical name translation of a file specification
     or device name (because TABLE1 is the first item in the
     equivalence string for the logical name LNM$FILE_DEV, which
     determines the default search sequence of logical name tables
     whenever a device or file specification is translated).

     The second ASSIGN command assigns the logical name WORK_DISK
     to the physical device DKA1, and places the name in TABLE1.
     The logical name has the concealed attribute. Therefore, the
     logical name WORK_DISK will be displayed in system messages.

   7.$ ASSIGN/TABLE=LNM$PROCESS/TABLE=LNM$GROUP  DKA0:  SYSFILES
     $ SHOW LOGICAL  SYSFILES
       "SYSFILES" = "DKA0:" (LNM$GROUP_000240)

     The ASSIGN command in this example contains conflicting
     qualifiers. When you specify conflicting qualifiers, the ASSIGN
     command uses the last qualifier specified. The response from
     the SHOW LOGICAL command indicates that the name was placed in
     the group logical name table.

   8.$ ASSIGN/TABLE=LNM$GROUP 'F$TRNLNM("SYS$COMMAND")' TERMINAL
     %DCL-I-SUPERSEDE, previous value of TERMINAL has been superseded

     The ASSIGN command in this example uses the lexical function
     F$TRNLNM to translate the logical name SYS$COMMAND and use the
     result as the equivalence name for the logical name TERMINAL.
     The message from the ASSIGN command indicates that an entry for
     the logical name TERMINAL already existed in the group logical
     name table, and that the new entry has replaced the previous
     one.

     If this command is used in a LOGIN.COM file, the entry for
     TERMINAL will be redefined at the beginning of each terminal
     session. The current process and any subprocesses it creates
     can execute images that use the logical name TERMINAL to write
     messages to the current terminal device.

   9.$ ASSIGN DALLAS::DMA1:  DATA

     The ASSIGN command in this example associates the logical
     name DATA with the device specification DMA1 on remote node
     DALLAS. Subsequent references to the logical name DATA result
     in references to the disk on the remote node.

   10$ CREATE AVERAGE.COM
     $ ASSIGN/USER_MODE SYS$COMMAND:  SYS$INPUT
     $ EDIT/EDT AVERAGE.FOR
     $ FORTRAN AVERAGE
     $ LINK AVERAGE
     $ RUN AVERAGE
     87
     80
     90
     9999
     $ EXIT
<Ctrl/Z>

     $ @AVERAGE.COM

     The CREATE command in this example creates the command
     procedure AVERAGE.COM. Then the command procedure is executed.

     The command procedure uses the ASSIGN command with the /USER_
     MODE qualifier to change temporarily the value of SYS$INPUT.
     When the EDT editor is invoked, it accepts input from the
     terminal. This allows you to create or modify the program
     AVERAGE.FOR interactively.

     When you exit from EDT, SYS$INPUT is reassigned to its original
     value (the input stream provided by the command procedure).
     Thus, when the program AVERAGE.FOR is ready to accept input, it
     looks for that input in the command procedure.