-typos (as usual)
Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
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@ -4,7 +4,7 @@
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In the shell you can see the use of
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[here documents](http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_07_04) from time to time. They are very practical if you want to
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feed in some data with line breaks (also referred to as
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feed some data with line breaks (also referred to as
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"document") into another programm at the current position
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("here") in the shell.
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@ -37,6 +37,9 @@ offers a great reference for shell coders/users):
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eof
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Just try it - copy and paste the above code into your shell and it will
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display the result of 1+1 and the contents of your home directory.
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## Here documents and stdin in cdist
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Whenever you execute a type in a manifest in cdist like this:
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@ -46,7 +49,7 @@ Whenever you execute a type in a manifest in cdist like this:
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cdist also reads stdin that is supplied to the type.
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Not every type that is shipped with cdist makes use
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of stdin, but [__file](/software/cdist/man/latest/man7/cdist-type__file.html)
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does (always check the manpage of our types - if a type makes
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does (always check the manpage of the cdist types - if a type makes
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use of stdin, it is documented in there).
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Indeed, if **\_\_file** sees that you use "-" as the value for the
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@ -70,12 +73,12 @@ Beware, you could use cat like this
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eof
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but it is a
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([useless use of cat (UUOC)](https://en.wikipedia.org/wiki/Cat_(Unix)#Useless_use_of_cat).
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[useless use of cat (UUOC)](https://en.wikipedia.org/wiki/Cat_(Unix)#Useless_use_of_cat).
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## Templating using here documents in cdist
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Here documents are very powerful and they are very useful for templating.
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Indeed, the **__ungleich_nginx_site** type uses a template like this in its manifest:
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Indeed, the [__ungleich_nginx_site type](https://github.com/ungleich/cdist-examples/tree/master/type/__ungleich_nginx_site) uses a template like this in its manifest:
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template_in=$__type/files/nginx-template
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template_out=$__object/files/nginx-template
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@ -141,4 +144,7 @@ The shell is indeed very powerful, you just need to know how to use it.
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This is why cdist was even originally written in shell script and is
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still configured in shell script (and will continue to be so).
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[[!tag cdist config unix]]
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If you are shell junkie, you may find more addictive drugs
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[[in this blog|blog]].
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[[!tag cdist config shell unix]]
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