EXEC                                                        CMS Nucleus command

Use the EXEC command to execute a specified EXEC file containing CMS commands,
EXEC or REXX instructions.  The format of the EXEC command
is:
+----------+------------------------------------------------------------------+
| [EXec]   | fn [args...]                                                     |
+----------+------------------------------------------------------------------+
where:

[EXec]   indicates that the EXEC command may be omitted if you are executing
         the EXEC procedure from the CMS command environment and have not
         issued the command SET IMPEX OFF.

fn       is the filename of a file containing CMS commands, EXEC or REXX
         instructions to be executed.  The filetype of the file must be EXEC.
         The file can have either fixed- or variable-length records with a
         logical record length not exceeding 130 characters.  A text editor or
         a user program can create EXEC files.  EXEC files created by the CMS
         editor creates have, by default, variable-length, 80-character
         records.

args     are any arguments you wish to pass to the EXEC.  The CMS EXEC
         processor assigns arguments to special variables &1 through &30 in the
         order in which they appear in the argument list.  The REXX interpreter
         makes the the arguments available to the program through the ARG and
         PARSE ARG instructions.  The number of bytes of data you can pass in
         the argument list is limited to 130.

If the first line of the EXEC file begins with a REXX comment ("/*"), then the
REXX interpreter is invoked to execute the program.  Otherwise the EXEC
interpreter is invoked.

To get help on writing procedures in the REXX language, enter HELP REXX.


The following topics provide details about writing procedures in the EXEC
language:

ASSIGN    The assignment statement.
ARGS      The &ARGS control statement.
BEGEMSG   The &BEGEMSG control statement.
BEGPUNCH  The &BEGPUNCH control statement.
BEGSTACK  The &BEGSTACK control statement.
BEGTYPE   The &BEGTYPE control statement.
CONCAT    The &CONCAT built-in function.
CONTINUE  The &CONTINUE control statement.
CONTROL   The &CONTROL control statement.
DATATYPE  The &DATATYPE built-in function.
EMSG      The &EMSG control statement.
END       The &END control statement.
ERROR     The &ERROR control statement.
EXIT      The &EXIT control statement.
GOTO      The &GOTO control statement.
HEX       The &HEX control statement.
IF        The &IF control statement.
LENGTH    The &LENGTH built-in function.
LITERAL   The &LITERAL built-in function.
LOOP      The &LOOP control statement.
PUNCH     The &PUNCH control statement.
READ      The &READ control statement.
SKIP      The &SKIP control statement.
SPACE     The &SPACE control statement.
STACK     The &STACK control statement.
SUBSTR    The &SUBSTR built-in function.
TIME      The &TIME control statement.
TYPE      The &TYPE control statement.
VARS      Special variables &n, &*, &$, &0, &DISKx, &DISK*, &DISK?, &DOS,
          &EXEC, &GLOBAL, &GLOBALn, &INDEX, &LINENUM, &READFLAG, &RETCODE,
          &TYPEFLAG.

For help on any EXEC topic, enter HELP EXEC topic.