(gawk.info.gz) SVR4
Info Catalog
(gawk.info.gz) V7/SVR3
(gawk.info.gz) Language History
(gawk.info.gz) POSIX
A.2 Changes Between SVR3.1 and SVR4
===================================
The System V Release 4 (1989) version of Unix `awk' added these features
(some of which originated in `gawk'):
* The `ENVIRON' array ( Built-in Variables).
* Multiple `-f' options on the command line ( Options).
* The `-v' option for assigning variables before program execution
begins ( Options).
* The `--' option for terminating command-line options.
* The `\a', `\v', and `\x' escape sequences ( Escape
Sequences).
* A defined return value for the `srand()' built-in function (
Numeric Functions).
* The `toupper()' and `tolower()' built-in string functions for case
translation ( String Functions).
* A cleaner specification for the `%c' format-control letter in the
`printf' function ( Control Letters).
* The ability to dynamically pass the field width and precision
(`"%*.*d"') in the argument list of the `printf' function (
Control Letters).
* The use of regexp constants, such as `/foo/', as expressions, where
they are equivalent to using the matching operator, as in `$0 ~
/foo/' ( Using Constant Regexps).
* Processing of escape sequences inside command-line variable
assignments ( Assignment Options).
Info Catalog
(gawk.info.gz) V7/SVR3
(gawk.info.gz) Language History
(gawk.info.gz) POSIX
automatically generated by
info2html