Need to edit the key as follows by using comment line (SASHome/SASFoundation/9.4/sassetup):
[_SID_]
Version=9.4
Revision=9.4
Platform_long=Linux for X64
Platform_short=lax
Order=9BLBXN
License_prod=SAS
Setnumid=70100905
SID_schema=2
ph_agreement=PROMPT
SID_header=SAS 9.4
[_Info_]
[_FileData_]
$_Filename=setinit.sas
$_Path=.\
$_Date=
$_Time=
$_Stream=-------------------- BEGIN --------------------
PUT KEY INFORMATION HERE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
$_Stream=--------------------- END ---------------------
$_Filename=tletter.txt
$_Path=.\
$_Date=
$_Time=
$_Stream=-------------------- BEGIN --------------------
Linux for X64
All Standard SAS/ACCESS Engines 14AUG2017
Base SAS 14AUG2017
Education Analytical Suite 14AUG2017
SAS Bridge for Esri 14AUG2017
SAS Enterprise Guide 14AUG2017
SAS Integration Technologies 14AUG2017
SAS/ACCESS Interface to Aster 14AUG2017
SAS/ACCESS Interface to DB2 14AUG2017
SAS/ACCESS Interface to Greenplum 14AUG2017
SAS/ACCESS Interface to HAWQ 14AUG2017
SAS/ACCESS Interface to Hadoop 14AUG2017
SAS/ACCESS Interface to Impala 14AUG2017
SAS/ACCESS Interface to Informix 14AUG2017
SAS/ACCESS Interface to Microsoft SQL Server 14AUG2017
SAS/ACCESS Interface to MySQL 14AUG2017
SAS/ACCESS Interface to Netezza 14AUG2017
SAS/ACCESS Interface to ODBC 14AUG2017
SAS/ACCESS Interface to Oracle 14AUG2017
SAS/ACCESS Interface to PC Files 14AUG2017
SAS/ACCESS Interface to PostgreSQL 14AUG2017
SAS/ACCESS Interface to SAP HANA 14AUG2017
SAS/ACCESS Interface to Sybase 14AUG2017
SAS/ACCESS Interface to Sybase IQ 14AUG2017
SAS/ACCESS Interface to Teradata 14AUG2017
SAS/ACCESS Interface to Vertica 14AUG2017
SAS/AF 14AUG2017
SAS/ASSIST 14AUG2017
SAS/CONNECT 14AUG2017
SAS/EIS 14AUG2017
SAS/ETS 14AUG2017
SAS/FSP 14AUG2017
SAS/GRAPH 14AUG2017
SAS/IML 14AUG2017
SAS/OR 14AUG2017
SAS/QC 14AUG2017
SAS/SHARE 14AUG2017
SAS/STAT 14AUG2017
$_Stream=--------------------- END ---------------------
[_EOF_]