New Features in Version 7
Many new features were introduced in Version 7.
- Programming tools: lex, yacc, lint, pcc, and make.
These first appeared in the Research Unix lineage in Version 7, although early versions of some of them had already been picked up by PWB/UNIX.
- New commands: the Bourne shell, at, awk, calendar, f77, fortune, tar (replacing the tp command), touch, uucp
- New system calls: access, acct, alarm, chroot (originally used to test the v7 distribution during preparation), ioctl, lseek (previously only 24-bit offsets were available), umask, utime
- New library calls: The new stdio routines, malloc, getenv, popen/system
- Environment variables
- The #! convention
The combination of the Bourne shell and the hashbang convention meant that scripts and scripting languages could provide the same user experience as native C programs.
Read more about this topic: Version 7 Unix
Famous quotes containing the words features and/or version:
“The features of our face are hardly more than gestures which force of habit made permanent. Nature, like the destruction of Pompeii, like the metamorphosis of a nymph into a tree, has arrested us in an accustomed movement.”
—Marcel Proust (1871–1922)
“Truth cannot be defined or tested by agreement with ‘the world’; for not only do truths differ for different worlds but the nature of agreement between a world apart from it is notoriously nebulous. Rather—speaking loosely and without trying to answer either Pilate’s question or Tarski’s—a version is to be taken to be true when it offends no unyielding beliefs and none of its own precepts.”
—Nelson Goodman (b. 1906)