HP 3000 Manuals

MPE V to MPE XL: Getting Started

Lesson 4:  WHILE 

The new WHILE (...ENDWHILE) command allows for expression evaluation,
which adds a looping capability that can be used to control the sequence
of command execution.

Consider this command file.

     SETVAR filenum,4
     WHILE SETVAR (filenum, filenum-1) >= 0  DO
       PURGE myfile!filenum
     ENDWHILE

The above example will purge all occurrences of the file MYFILE# starting
with MYFILE3 until the FILENUM value of -1 is met (for example, myfile3,
myfile2, myfile1, myfile0).

Exercises 

6.   Using the WHILE command, write a command file that will count to 10
     and then end when the set limit has been reached.

7.   Write a command file that counts to 50 by twos.

MPE/iX 5.0 Documentation