20. Building TSO Commands

A BREXX function can be converted to work as a TSO command by creating a clist and call the BREXX script. To perform the new clist, it must be stored in one of the pre-allocated clists libraries which are active in your TSO session; alternatively, you can use SYS2.CMDPROC. Once this is done, you can call it from TSO directly.

20.1. LA List all allocated Libraries

The clist calls the BREXX LISTALC script with a BREXX CALL statement. A minus sign immediately following the REXX command tells BREXX to interpret a BREXX statement. The statement(s) must be coded in one line. To place more than one BREXX statement in a line, separate them by using a semicolon ‘;’.

REXX -
CALL LISTALC('PRINT')

20.2. WHOAMI Display current User Id

This one-liner outputs the userid() function by a say statement.

REXX -
SAY USERID()

20.3. TODAY

Display today’s Date

REXX -
SAY DATE(); SAY TIME()

20.4. USERS

List active Users. The clist calls the BREXX WHO script directly, therefore no minus sign is necessary:

REXX WHO

20.5. REPL

Interactive REXX Processor.

The clist calls the BREXX REPL which opens the interactive REXX processor. It allows you to enter and execute rexx statements.

RX REPL NOSTAE