The Unixer's view of the mainframe? A delightful comparison between
Unix commands and JCL appeared in this well-researched article:
http://www.escapistmagazine.com/forums/read/18.85690I don't know who the author is (he writes under the pseudonym
RAKtheUndead) but I hope he won't mind if I quote a short extract:
"As part of my research for this article, I installed an OS/360 MVT
system on the Hercules emulator. OS/360, along with its successors,
and the DOS/360 line as well, uses JCL, a language used for simple
system tasks. The only problem is that it isn't too simple to use.
Whereas a copy file interaction under Unix would be performed like
this:
cp <1stFile> <2ndFile>
the corresponding JCL for OS/360 looks something like this:
//IS198CPY JOB (IS198T30500),'COPY JOB',CLASS=L,MSGCLASS=X
//COPY01 EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1 DD DSN=OLDFILE,DISP=SHR
//SYSUT2 DD DSN=NEWFILE,
// DISP=(NEW,CATLG,DELETE),
// SPACE=(CYL,(40,5),RLSE),
// DCB=(LRECL=115,BLKSIZE=1150)
//SYSIN DD DUMMY
Er, right. I don't think I'll bother learning JCL, then."
Terrific stuff!
--
Regards,
Roger Bowler
http://perso.wanadoo.fr/rbowlerHercules "the people's mainframe"
