Normally we code the REXX in the following wayġ) Execute some system commands by using REXXĢ) Collect the Output of that commands to the Stem* variablesģ) Process the data which we have collected in stem variable according to our logic or execute some other system commands To concate the PDS to SYSEXEC DD use the following commandĬONCAT DD (SYSEXEC) DS (‘(FIRST)’) Or typing EX at DSLIST(Option 3.4) line command area.Or you can first concate your PDS to SYSEXEC DD and type %FIRST in TSO ready prompt.From TSO ready prompt you can type EXEC ‘(FIRST)’ EXEC.Line1: The first line of the any REXX script must contain the word 'REXX'Ĥ) You can execute it by the following waysĪssumes you have the coding in the dataset ‘(FIRST)’ * */ - any statement with in this will be considered as comment. If you already know any programming languages then REXX will be very easy to learn.ġ) Create a sequential dataset with RECFM=FB, LRECL=80 or it can be a member of any PDS with these attributes So REXX will ease the work of administrator, With out REXX it will be very difficult to perform any large or repetitive tasks. This logic can be coded using control constructs like IF.THEN.END,DO.END etc.

If you don’t have any idea about script language, you can assume REXX is used to execute the collection of system commands according to our logic. You can use REXX to simplify the admin tasks like creating bulk no.of users, creating bulk datasets, recalling bulk datasets etc…and also it can be used in Panel programming. REXX is a scripting language like Perl, UNIX shell scripts and developed by IBM.

What is rexx