Re: Running a command if any files are copied.

Mike Ellis wrote:

> Just discovered Aap yesterday. Very impressive! 
> 
> Question: What's best way to copy one or more changed files to a local
> target and  if (and only if)  any files were copied, run a system
> command?
> 
> For example, here's a snippet from a  main.aap I'm creating to replace
> a fairly complicated makefile.
> 
>   #install the udev rules
>   :sys cp acceleron.rules /etc/udev/rules.d/
>   :sys /sbin/udevstart
> 
> This always copies the rules file and always runs udevstart.  I'd like
> to copy the rules only when the file changes and only run udevstart
> when a file was copied.  I'd also like to generalize it to handle more
> than one .rules file.

You could do it this way (for one file):

	dir = /etc/udev/rules.d/
	name = acceleron.rules

	$dir/$name : $name
		:cp {f} $source $target
		:sys /sbin/udevstart

	# install commands
	:update $dir/$name

If there are more .rules files, would udevstart need to be run once or
for each file?

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