From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Sat,  5 Jan 2019 16:03:40 -0800
From: Anthony Martin <ality@pbrane.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Message-ID: <20190106000340.GB21088@alice>
References: <6A2B4894-94A0-430A-9A17-84A37F1B4BD6@mapinternet.com>
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In-Reply-To: <6A2B4894-94A0-430A-9A17-84A37F1B4BD6@mapinternet.com>
Subject: Re: [9fans] How does one read a file line by line in an rc script?
Topicbox-Message-UUID: f2ae0fc2-ead9-11e9-9d60-3106f5b1d025

Mack Wallace <mackbw@mapinternet.com> once said:
> Another, probably more stupid question - How does one read a text file
> line by line in an rc script.

You should really read the rc(1) man page. It will answer your
questions.

Here the functions foo and bar are equivalent:

	fn foo {
		<$1 while(l = `{read}) echo $l
	}

	fn bar {
		{ while(l = `{read}) echo $l } <$1
	}

Think about why this one is not like the others:

	fn baz {
		while(l = `{read}){ echo $l } <$1
	}

Cheers,
  Anthony