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From: Julieta Shem <jshem@yaxenu.org>
Newsgroups: comp.lang.awk
Subject: Re: "sed" question
Date: Sat, 09 Mar 2024 11:52:09 -0300
Organization: A noiseless patient Spider
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Christian Weisgerber <naddy@mips.inka.de> writes:

> On 2024-03-06, Janis Papanagnou <janis_papanagnou+ng@hotmail.com> wrote:
>
>>> $ awk '{print $1, "1-1"}'  newsrc-news.eternal-september.org-test >
>>> newsrc-news.eternal-september.org
>>
>> In this specific case of regular data you can simplify that to
>>
>>   awk '$2="1-1"'  sourcefile > targetfile
>
> That had me scratching my head.  You can't have an action without
> enclosing braces.  But it's still legal syntax because... it's an
> expression serving as a pattern.  The assignment itself is a side
> effect.

Without braces, the default action takes place, which is ``{print}''.