10-15-2009
cat multiple files questions
Hi--
I'm trying to figure out how to use cat more wisely. I have the following command, which works, but I'd like to understand how to get it to work more clearly and efficiently.
cat 'my file.001' 'my file.002' 'my file.003' 'my file.004' 'my file.005' 'my file.006' 'my file.007' 'my file.008' 'my file.009' 'my file.010' > 'my file'
But I think you're supposed to be able to do
cat file.* > file
Unfortunately, the quotes are preventing the wildcard from working. So my first question is, is there a way to get the wildcard thing to work when you need to use quotes?
The second thing is after running the command, nothing happens. I get no feedback as to what's happening. So the second question is, is there a way to make cat more verbose?
Thanks.
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LEARN ABOUT DEBIAN
mustache
MUSTACHE(1) Mustache Manual MUSTACHE(1)
NAME
mustache -- Mustache processor
SYNOPSIS
mustache <YAML> <FILE>
mustache --compile <FILE>
mustache --tokens <FILE>
DESCRIPTION
Mustache is a logic-less templating system for HTML, config files, anything.
The mustache command processes a Mustache template preceded by YAML frontmatter from standard input and prints one or more documents to
standard output.
YAML frontmatter beings with --- on a single line, followed by YAML, ending with another --- on a single line, e.g.
---
names: [ {name: chris}, {name: mark}, {name: scott} ]
---
If you are unfamiliar with YAML, it is a superset of JSON. Valid JSON should work fine.
After the frontmatter should come any valid Mustache template. See mustache(5) for an overview of Mustache templates.
For example:
{{#names}}
Hi {{name}}!
{{/names}}
Now let's combine them.
$ cat data.yml
---
names: [ {name: chris}, {name: mark}, {name: scott} ]
---
$ cat template.mustache
{{#names}}
Hi {{name}}!
{{/names}}
$ cat data.yml template.mustache | mustache
Hi chris!
Hi mark!
Hi scott!
If you provide multiple YAML documents (as delimited by ---), your template will be rendered multiple times. Like a mail merge.
For example:
$ cat data.yml
---
name: chris
---
name: mark
---
name: scott
---
$ cat template.mustache
Hi {{name}}!
$ cat data.yml template.mustache | mustache
Hi chris!
Hi mark!
Hi scott!
OPTIONS
By default mustache will try to render a Mustache template using the YAML frontmatter you provide. It can do a few other things, however.
-c, --compile
Print the compiled Ruby version of a given template. This is the code that is actually used when rendering a template into a string.
Useful for debugging but only if you are familiar with Mustache's internals.
-t, --tokens
Print the tokenized form of a given Mustache template. This can be used to understand how Mustache parses a template. The tokens are
handed to a generator which compiles them into a Ruby string. Syntax errors and confused tags, therefor, can probably be identified
by examining the tokens produced.
INSTALLATION
If you have RubyGems installed:
gem install mustache
EXAMPLES
$ mustache data.yml template.mustache
$ cat data.yml | mustache - template.mustache
$ mustache -c template.mustache
$ cat <<data | ruby mustache - template.mustache
---
name: Bob
age: 30
---
data
COPYRIGHT
Mustache is Copyright (C) 2009 Chris Wanstrath
Original CTemplate by Google
SEE ALSO
mustache(5), mustache(7), gem(1), http://mustache.github.com/
DEFUNKT
May 2010 MUSTACHE(1)