Specifying commands not supported in the background

CSECT IKJEFTNS lists the commands not supported in the background. The list as distributed is shown in the following example. You can add any commands that you wish to restrict from background jobs.

           ENTRY     NSCPTABL
IKJEFTNS   CSECT
           DC        C'IKJEFTNS'       MODULE NAME
           DC        C'76.033  '       RELEASE LEVEL
NSCPTABL   DS        0D                ALIGNMENT
           DC        AL2(8)            LENGTH OF COMMAND NAME
           DC        C'OPERATOR'       COMMAND NAME
           DC        AL2(4)            LENGTH OF COMMAND NAME
           DC        C'OPER    '       COMMAND NAME
           DC        AL2(8)            LENGTH OF COMMAND NAME
           DC        C'TERMINAL'       COMMAND NAME
           DC        AL2(4)            LENGTH OF COMMAND NAME
           DC        C'TERM    '       COMMAND NAME
           DC        AL2(0)            TEN MORE BLANK ENTRIES
           DC        C'        '       FOR INSTALLATION USE
           DC        X'FFFF'           TABLE TERMINATOR
           END

Command Name List Format: (See the preceding example.) Each entry in the list consists of a 2-byte length field (the length of the command name) and an 8-byte command name field. The name is left-justified and padded with blanks, as required. An unused entry consists of a 2-byte field containing zeroes and an 8-byte field containing blanks. The end of the list is indicated by a 2-byte field containing ones (X'FFFF').

Modifying the Command Name List: CSECT IKJEFTNS contains 10 entries available for installation use. You can add command names and aliases to the list. If 10 entries are insufficient for your use, you can increase the length of the list. Each time you modify the list (add or delete an entry, or change the length of the list), re- assemble CSECT IKJEFTNS and link-edit it into IKJTABLS.

When modifying the list, make sure that TERMINAL, TERM, OPERATOR, and OPER are not deleted.