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Re: ForEachLineIn/ReadArray ??

From: Tim Nelson
Subject: Re: ForEachLineIn/ReadArray ??
Date: Mon, 31 Jan 2005 11:47:04 +1100 (EST)

On Fri, 28 Jan 2005, Andy Mace wrote:

Ok.. I basically have a file with strings on each line
I want to loop around the file and read each string on the line and write a line out in a config file.

Ah. This is one that I personally would solve with Perl (or rather, the perl templating solution that I use), and then run that using cfengine's "shellcommands". AFAIK, cfengine editfiles doesn't have a facility for putting a line into a variable (or rather, only into the currentline variable, which acts like Perl's $_ variable), and neither do I know of any way to write to a non-current file using editfiles. Hmm. Mark, we might want to consider solving these problems when we redesign editfiles in the future. I'll try and remember to add a link to this thread to the wiki once these posts appear in the archive.

If you really wanted to solve it with cfengine, the only way I can think of is:
1.      Use a "copy" stanza to copy the base file to a temp file
2.      Use editfiles to transform the temp file into exactly what you
        want in the config file
3.      Use a shellcommands "mv" to copy the new config file over the old

        There may be other solutions, but I'm unaware of them.


Tim Nelson
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