[augeas-devel] Parsing network-scripts/ifcfg-*

[David Lutterkort]

On Tue, 2008-04-22 at 00:47 +0100, Daniel P. Berrange wrote:
> Can augtool take args and turn them into variables, which can be subsituted
> in. eg say you had a script
> 
>   $ cat > nicsonboot.aug <<EOF
>     set /files/etc/sysconfig/network-scripts/ifcfg-eth0/ONBOOT $onboot
>     set /files/etc/sysconfig/network-scripts/ifcfg-br0/ONBOOT $onboot
>   EOF

No, it doesn't. You can achieve a similar effect with a simple shell
script that does the above cat, substituting its args for $onboot (or
use the Ruby/Python bindings for more complicated things).

>   $ augtool nicsonboot.aug --onboot=no

One small misconception: .aug files are not for manipulating the tree,
they contain descriptions of file <-> tree mappings. augtool reads those
files, constructs a tree based on the descriptions, and lets the user
manipulate them with set/rm etc. commands before writing the tree back
into files according to the descriptions.

I just realized that my initial example is missing a 'save' at the end.

The language for describing file <-> tree mappings is much more full
featured and has variables etc. but no way to make persistent changes to
files.

David