Example 7

Operation: Enter a fully-qualified data set name as an argument in an explicitly executed REXX exec.

Known:

The REXX exec named SWITCH is contained in a REXX library named MASTER.EXEC which is allocated to SYSPROC.

The REXX exec consists of:

PARSE ARG dsn1 dsn2
'RENAME' dsn1 'TEMPSAVE'
'RENAME' dsn2  dsn1
'RENAME TEMPSAVE' dsn2

If you have a user ID of USER33 and you want to switch the names of two data sets MASTER.BACKUP and USER33.GOODCOPY, you can invoke the REXX exec as follows:

Explicit form:

exec 'master.exec(switch)' '''master.backup'' goodcopy' exec

Extended implicit form:

%switch 'master.backup' goodcopy

Note that when you use the implicit form, the specification of quoted strings in the value list is made simpler because the value list itself is not a quoted string.