EXEC 2

EXEC 2 is an interpreted, command procedure control, computer scripting language used by the EXEC 2 Processor supplied with the IBM Virtual Machine/System Product (VM/SP) operating system.[1]

EXEC 2 is similar to CMS EXEC with the following enhancements:[2]

  • There is no 8-byte restriction on token length.[3]
  • Statements can be up to 255 characters long.
  • EXEC 2 can issue commands to subcommand environments as well as CMS and CP.
  • EXEC 2 has additional built-in functions.
  • EXEC 2 commands may include subroutines and functions.
  • EXEC 2 has extra debugging facilities.
  • CMS programs can manipulate EXEC 2 variables.

XEDIT Macros

XEDIT Macros are files with filetype XEDIT, whose contents are written using the syntax of CMS EXEC, EXEC 2 or REXX.[4] Like regular EXEC 2 "EXEC" command files, they begin with a "&TRACE" statement,[4] to distinguish them from CMS EXEC files.

History

Written in the 1970s,[5], EXEC 2 was preceded by CMS EXEC and superseded by REXX.

All three command interpreters—CMS EXEC, EXEC 2 and REXX — continue to be supported by the IBM CMS product.

gollark: _continues checking 300 dragons for periodic table codes_
gollark: In any case, it still seems really stupid wanting to control what order your dragons are viewed in, to me at least, especially since by default you'd see their chosen sort.
gollark: Byeyeye!
gollark: Yes, hence an option.
gollark: I mean, you could allow people to set whether you're allowed custom sorts, too, that'd work.

References
  1. Varian, Melinda. "VM AND THE VM COMMUNITY: Past, Present, and Future" (PDF). Retrieved March 14, 2012.
  2. IBM Corporation. "EXEC 2 Processor and CMS EXEC Processor". Retrieved March 14, 2012.
  3. "EXEC 2 Processor and CMS EXEC Processor".
  4. EXEC 2 Reference (PDF). p. 92.
  5. "EXEC 2".
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.