| SAS Companion for the CMS Environment |
Unlike configuration files, which contain SAS system options, an autoexec
file contains SAS statements. For example, an autoexec file could
contain the following lines:
options nodate linesize=75;
libname mylib 'b';
In this example, the OPTIONS statement sets some SAS
system options, and the LIBNAME statement assigns a libref.
Note:
Some SAS system options can be specified only when you invoke SAS. These system
options cannot be specified in an OPTIONS statement; therefore, they cannot
be specified in an autoexec file. Summary Table of SAS System Options tells where each SAS system option
can be specified. ![[cautend]](../common/images/cautend.gif)
Another difference between configuration files and autoexec
files is that configuration files are processed before SAS is initialized,
whereas autoexec files are processed after SAS is initialized. Therefore,
setting the NODATE and LINESIZE= options in a configuration file affects the
appearance of the SAS log header, whereas setting NODATE and LINESIZE= in
an autoexec file does not. An OPTIONS statement in an autoexec file is equivalent
to submitting an OPTIONS statement as the first statement of your SAS session.
To create an autoexec file, follow these steps:
-
Use any text editor to write SAS
statements into
a CMS file. If you use SAS as the filetype, then you won't need to specify
the filetype in the AUTOEXEC= system option. (See Specifying an Autoexec File
.)
-
Type in the SAS statements that you want to include.
-
Save the new autoexec
file.
To tell SAS which autoexec file to use, use the AUTOEXEC= system
option in the SAS command. For example, the following SAS command invokes
SAS and tells it to use the autoexec file named MYEXEC SAS:
sas (autoexec=myexec
The SAS filetype is assumed. If your autoexec file
has a different filetype, then you must specify the filetype, and you must
enclose the file specification in quotation marks. For example, the following
SAS command specifies the autoexec file named AUTO1 AUTOFILE.
sas (autoexec='auto1 autofile'
If you don't include a filemode in your file specification,
then SAS searches your minidisks or SFS directories in standard CMS search
order to locate the autoexec file.
Note:
Alternatively, you may include the filemode or
an explicit SFS directory as a value in the AUTOEXEC= option. If you specify
a filemode, you must also specify a filetype.
SAS statements that are submitted from an autoexec file usually
are not displayed in the SAS log. However, if you specify the ECHOAUTO system
option when you invoke SAS, then SAS writes (or "echoes") the autoexec statements
to the SAS log as they are executed. For example, suppose your autoexec filename
is MYEXEC FILE and that it contains the following SAS statements:
libname mylib 'b';
filename newdata 'myprog data c';
If you use the following command to invoke SAS, then
the contents of MYEXEC FILE will be written to the SAS log.
sas (autoexec='myexec file' echoauto
For more information about the ECHOAUTO system option,
see
SAS Language Reference: Dictionary.
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
