Windows:
SET MFSYSCAT={path\CATALOG.DAT | URL} 
                           						UNIX:
export MFSYSCAT={path/CATALOG.DAT | URL} 
                           					 Windows:
SET MFSYSCAT=C:\MY\CATALOG\FOLDER\CATALOG.DAT 
                           						UNIX:
export MFSYSCAT=/MY/CATALOG/FOLDER/CATALOG.DAT 
                           						Windows:
SET MFSYSCAT=sql://localhost/JCLTEST/catalog.dat?folder=/JCLDEMO 
                           						UNIX:
export MFSYSCAT=sql://localhost/JCLTEST/catalog.dat?folder=/JCLDEMO