Type III C lass A Program

EXEC
Purpose:
EXEC executes one or more CMS commands contained
specified file. allowing a sequence of commands
executed by issuing a single command.
Format:
EXEC filename 1
in a
to be
filename specifies the filename of a file containing one or
more CMS command to be executed. The filetype must
be EXEC.
argI, •• '. argN are the arguments to replace the numeric
variables in the file wfilename EXEC ft •
Usage:
EXEC executes the sequence of commands that are specified in
the file ftfilename EXEC w • This file must be in card-image
form, and must consist of one CMS command per card image in
the same format as the command is entered at the terminal.
The filetype for the specified file must be EXEC. EXEC
files can be created by the EDIT or LISTF commands, or by a
user·s program.
Each CMS command in the EXEC file can have from one to
thirty numeric variables. A numeric variable is made up of
an ampersand (&) followed by an integer ranging from one to
thirty. (that is, &1&2 ••• &30). Before the command is
executed" each variable is temporarily replaced by an
argument specified when the EXEC comroand was issued. For
example, each time an &1 appears as a variable in an EXEC
line. t:le first argument specified with the EXEC command
temporarily replaces the &1, the second argument specified
with the EXEC command replaces &2. and so on, to argument N
of the EXEC command.
If the double quotation mark (ft) is used in place of an
argument,. the corresponding variable (&N) is ignored in all
the commands which reference that variable. If the
specified EXEC file contains more variables than arguments
given with the EXEC command, the higher numbered variables
are assumed to be missing, and are ignored when the commands
are executed.
Arguments can be concatenated to the right side of any word
in an EXEC line. For example, the EXEC line LISTF ABC&1
FORTRAN&2 would result in LISTF ABCXYZ FORTRAN, if arg1 is
XYZ and arg2 is unspecified. Use of the double quote (W)
for arg1 would cause the variable to be ignored leaving
EXEC 175