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Diffstat (limited to 'doc/gawk.texi')
| -rw-r--r-- | doc/gawk.texi | 107 |
1 files changed, 55 insertions, 52 deletions
diff --git a/doc/gawk.texi b/doc/gawk.texi index 4b6e68c1..57c37746 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -1270,6 +1270,9 @@ the C/C++ module as a dynamic plug-in. has all the details, and as expected, many examples to help you learn the ins and outs. +I enjoy programming in AWK and had fun (re)reading this book. +I think you will too. + @ifnotdocbook @cindex Brennan, Michael @display @@ -11843,7 +11846,7 @@ The post-increment @samp{foo++} is nearly the same as writing @samp{(foo not necessarily equal @code{foo}. But the difference is minute as long as you stick to numbers that are fairly small (less than @iftex -@math{10^12}). +@math{10^{12}}). @end iftex @ifnottex @ifnotdocbook @@ -40305,6 +40308,39 @@ It was written in @command{awk} by Brian Kernighan and Jon Bentley, and is available from @uref{http://netlib.sandia.gov/netlib/typesetting/chem.gz}. +@item Comparison Expression +A relation that is either true or false, such as @samp{a < b}. +Comparison expressions are used in @code{if}, @code{while}, @code{do}, +and @code{for} +statements, and in patterns to select which input records to process. +(@xref{Typing and Comparison}.) + +@cindex compiled programs +@item Compiler +A program that translates human-readable source code into +machine-executable object code. The object code is then executed +directly by the computer. +See also ``Interpreter.'' + +@item Compound Statement +A series of @command{awk} statements, enclosed in curly braces. Compound +statements may be nested. +(@xref{Statements}.) + +@item Concatenation +Concatenating two strings means sticking them together, one after another, +producing a new string. For example, the string @samp{foo} concatenated with +the string @samp{bar} gives the string @samp{foobar}. +(@xref{Concatenation}.) + +@item Conditional Expression +An expression using the @samp{?:} ternary operator, such as +@samp{@var{expr1} ? @var{expr2} : @var{expr3}}. The expression +@var{expr1} is evaluated; if the result is true, the value of the whole +expression is the value of @var{expr2}; otherwise the value is +@var{expr3}. In either case, only one of @var{expr2} and @var{expr3} +is evaluated. (@xref{Conditional Exp}.) + @cindex McIlroy, Doug @cindex cookie @item Cookie @@ -40353,39 +40389,6 @@ Doug @item Coprocess A subordinate program with which two-way communications is possible. -@cindex compiled programs -@item Compiler -A program that translates human-readable source code into -machine-executable object code. The object code is then executed -directly by the computer. -See also ``Interpreter.'' - -@item Compound Statement -A series of @command{awk} statements, enclosed in curly braces. Compound -statements may be nested. -(@xref{Statements}.) - -@item Concatenation -Concatenating two strings means sticking them together, one after another, -producing a new string. For example, the string @samp{foo} concatenated with -the string @samp{bar} gives the string @samp{foobar}. -(@xref{Concatenation}.) - -@item Conditional Expression -An expression using the @samp{?:} ternary operator, such as -@samp{@var{expr1} ? @var{expr2} : @var{expr3}}. The expression -@var{expr1} is evaluated; if the result is true, the value of the whole -expression is the value of @var{expr2}; otherwise the value is -@var{expr3}. In either case, only one of @var{expr2} and @var{expr3} -is evaluated. (@xref{Conditional Exp}.) - -@item Comparison Expression -A relation that is either true or false, such as @samp{a < b}. -Comparison expressions are used in @code{if}, @code{while}, @code{do}, -and @code{for} -statements, and in patterns to select which input records to process. -(@xref{Typing and Comparison}.) - @item Curly Braces See ``Braces.'' @@ -40431,15 +40434,15 @@ ordinary expression. It could be a string constant, such as @code{"foo"}, but it may also be an expression whose value can vary. (@xref{Computed Regexps}.) +@item Empty String +See ``Null String.'' + @item Environment A collection of strings, of the form @samp{@var{name}=@var{val}}, that each program has available to it. Users generally place values into the environment in order to provide information to various programs. Typical examples are the environment variables @env{HOME} and @env{PATH}. -@item Empty String -See ``Null String.'' - @cindex epoch, definition of @item Epoch The date used as the ``beginning of time'' for timestamps. @@ -40496,15 +40499,6 @@ are controlled by the format strings contained in the predefined variables This document describes the terms under which this @value{DOCUMENT} is published and may be copied. (@xref{GNU Free Documentation License}.) -@item Function -A specialized group of statements used to encapsulate general -or program-specific tasks. @command{awk} has a number of built-in -functions, and also allows you to define your own. -(@xref{Functions}.) - -@item FSF -See ``Free Software Foundation.'' - @cindex FSF (Free Software Foundation) @cindex Free Software Foundation (FSF) @cindex Stallman, Richard @@ -40514,6 +40508,15 @@ to the production and distribution of freely distributable software. It was founded by Richard M.@: Stallman, the author of the original Emacs editor. GNU Emacs is the most widely used version of Emacs today. +@item FSF +See ``Free Software Foundation.'' + +@item Function +A specialized group of statements used to encapsulate general +or program-specific tasks. @command{awk} has a number of built-in +functions, and also allows you to define your own. +(@xref{Functions}.) + @item @command{gawk} The GNU implementation of @command{awk}. @@ -40644,12 +40647,12 @@ This document describes the terms under which binary library archives or shared objects, and their source code may be distributed. -@item Linux -See ``GNU/Linux.'' - @item LGPL See ``Lesser General Public License.'' +@item Linux +See ``GNU/Linux.'' + @item Localization The process of providing the data necessary for an internationalized program to work in a particular language. @@ -40787,12 +40790,12 @@ Regular variables are scalars; arrays and functions are not. In @command{gawk}, a list of directories to search for @command{awk} program source files. In the shell, a list of directories to search for executable programs. -@item Seed -The initial value, or starting point, for a sequence of random numbers. - @item @command{sed} See ``Stream Editor.'' +@item Seed +The initial value, or starting point, for a sequence of random numbers. + @item Shell The command interpreter for Unix and POSIX-compliant systems. The shell works both interactively, and as a programming language |