(gawk.info.gz) Awk Debugging

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 14.1.3 Awk Debugging
 --------------------
 
 Debugging an `awk' program has some specific aspects that are not
 shared with other programming languages.
 
    First of all, the fact that `awk' programs usually take input
 line-by-line from a file or files and operate on those lines using
 specific rules makes it especially useful to organize viewing the
 execution of the program in terms of these rules.  As we will see, each
 `awk' rule is treated almost like a function call, with its own
 specific block of instructions.
 
    In addition, since `awk' is by design a very concise language, it is
 easy to lose sight of everything that is going on "inside" each line of
 `awk' code.  The debugger provides the opportunity to look at the
 individual primitive instructions carried out by the higher-level `awk'
 commands.
 
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