Re: [Dragora-users] Dragora recipes with cp command

[Matias Fonzo]

Hello DustDFG,

El 2022-02-06 15:05, Dust DFG escribió:
> I saw that many of dragora recipes use the "cp -p" command. I want to 
> ask
> you why you don't use the mv command. Cp command waste time and disk
> resource. When source directory of package and package-$pkgname 
> directories
> are in the one filesystem and one physical disk(most cases), mv command
> just moves the file (It is cheap). When those directories aren't near, 
> mv
> command is similar to cp. I think mv should be preferred.

The "cp -p" command is in various parts of a recipe in order to copy 
local files that are located in the working directory, such as a 
configuration file, a configuration for a daemon, etc.  Mostly it is 
used to copy documentation from a source and insert it preserving the 
timestamp in the documentation directory for a package.

Moving the files instead of copying them would not be ideal, since it 
would disarrange the git aggregate files, also if you move the 
documentation files from a source, they would no longer be there when 
you want to preserve the source at build time (qi -k recipe).

> For example, a recipe for the package buildtree-generic that copies a 
> folder with kernel
> sources and binaries and then removes the original folder. It isn't 
> quick
> but it is very expensive because a computer wastes time and disk 
> resources.

For this particular case, yes, it may be useful and save resources 
instead of copying the kernel source directory...