by Robert Sample » Mon May 18, 2015 11:06 pm
where shoul I get started without learning PL/S or PL/X?
I am constantly amazed at the number of neophytes (some with less than 2 years experience of mainframes) that want to write utilities. The rule of thumb I was taught back in my Computer Science coursework is that utilities are THREE times harder to write than an application program, and operating systems are in turn three times harder to write than utilities. Considering how many neophytes cannot code up an application program, that means the chances of their successfully writing a utility are very small.
If you want to write a utility, start by learning Assembler. Once you know Assembler well enough that the
Principles of Operations manual hold no mysteries, then write your utility.
[quote]where shoul I get started without learning PL/S or PL/X?[/quote]I am constantly amazed at the number of neophytes (some with less than 2 years experience of mainframes) that want to write utilities. The rule of thumb I was taught back in my Computer Science coursework is that utilities are THREE times harder to write than an application program, and operating systems are in turn three times harder to write than utilities. Considering how many neophytes cannot code up an application program, that means the chances of their successfully writing a utility are very small.
If you want to write a utility, start by learning Assembler. Once you know Assembler well enough that the [i]Principles of Operations[/i] manual hold no mysteries, then write your utility.