(gawk.info)Getline

Explicit Input with `getline'
=============================

   So far we have been getting our input data from `awk''s main input
stream--either the standard input (usually your terminal, sometimes the
output from another program) or from the files specified on the command
line.  The `awk' language has a special built-in command called
`getline' that can be used to read input under your explicit control.



* Getline Intro
Introduction to the `getline' function.
* Plain Getline
Using `getline' with no arguments.
* Getline/Variable
Using `getline' into a variable.
* Getline/File
Using `getline' from a file.
* Getline/Variable/File
Using `getline' into a variable from a
file.
* Getline/Pipe
Using `getline' from a pipe.
* Getline/Variable/Pipe
Using `getline' into a variable from a
pipe.
* Getline Summary
Summary Of `getline' Variants.