Chapter 11: SAS Filename Extensions and File Headers

Using Filename Extensions to Identify Which SAS Engine and Operating Environment were Used to Create a SAS File

For SAS 6 and later, these operating environments use filename extensions to reflect the SAS engine and the SAS member that is created:

• OpenVMS

• z/OS (SAS 8 and later UNIX System Services Directory)

• UNIX

• Windows

Table 11.1 on page 61 lists SAS filename extensions for members by operating environment and SAS version.

Table 11.1: SAS Filename Extension by Operating Environment Type and SAS Version

Member	SAS Filename Extensions
	SAS 6			SAS 8 and Later
	UNIX	OpenVMS	Windows	UNIX, OpenVMS, z/OS [1] , and Windows
.SAS	.sas	.SAS	.sas	.sas
PROGRAM (DATA step)	.ssp nn	.SASEB$PROGRAM	.ss2	sas7bpgm
DATA	.ssd nn	.SASEB$DATA	.sd2	.sas7bdat
INDEX	.snx nn	.SASEB$INDEX	.si2	.sas7bndx
CATALOG	.sct nn	.SASEB$CATALOG	.sc2	.sas7bcat
MDDB	.ssm nn	.SASEB$MDDB	.sm2	.sas7bmdb
PROC SQL view	.snv nn	SASEB$VIEW	.sv2	.sas7bvew
ITEMSTORE	n/a	n/a	n/a	.sas7bitm
[1] refers to SAS 8 and later z/OS UNIX System Services Directory.

nn is an extension that is used to differentiate among UNIX machine architectures.

To find out the values for nn under UNIX operating environments, see Table 9.2 on page 56.