ruby-dbus | A Ruby binding for DBus
kandi X-RAY | ruby-dbus Summary
kandi X-RAY | ruby-dbus Summary
A Ruby binding for DBus
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Top functions reviewed by kandi - BETA
- Append a value to a packet
- parse the packet signature
- returns the next state of the current state
- Processes the message
- Unifies the given packet .
- Marshall the packet into the message .
- return data hash
- Defines a method on the interface .
- Dispatches the message to the given message .
- Defines the methods corresponding to the interface .
ruby-dbus Key Features
ruby-dbus Examples and Code Snippets
Community Discussions
Trending Discussions on ruby-dbus
QUESTION
I am thinking ruby-dbus could be the right solution, but I cannot seem to find any examples of how to detect in realtime, whenever a storage device is connected to the Linux machine. Anyone have such an example?
...ANSWER
Answered 2017-Apr-21 at 19:46There seems to be numerous different approaches you could take.
Here's a Ruby implementation I found that links into libusb
with Ruby FFI.
What's good about this is that libusb supports hotplug notifications, so this could be something that does what you need:
http://libusb.sourceforge.net/api-1.0/hotplug.html
From the libusb Ruby docs:
Device hotplug support
Support for device hotplugging can be used, if
LIBUSB.has_capability?(:CAP_HAS_HOTPLUG)
returns true. This requires libusb-1.0.16 or newer on Linux or MacOS. Windows support is still on the way.A hotplug event handler can be registered with {
LIBUSB::Context#on_hotplug_event
}. You then need to call {LIBUSB::Context#handle_events
} in order to receive any events. This can be done as blocking calls (possibly in it's own thread) or by using {LIBUSB::Context#pollfds
} to detect any events to handle.
QUESTION
I'm trying to force rpm
to follow a given install order and it is not working as expected. The Requires
clause I added is not being respected.
I am doing a bare-metal Linux installer (openSUSE 42.2-based). A whole system -- hundreds of packages -- are installed with one RPM command (using --root
). I am having problems with three packages -- pam-config, pam-script, and openssh. The pam-config %post
scriptlet tries to modify files contained in pam-script and openssh but is installed, by default, before them. It does not have dependencies by default, so, having the source, I rectified that by adding:
ANSWER
Answered 2017-Jan-13 at 03:25You can add more explicit sub-fields to the Requires
tag, e.g. Requires(post): openssh-server
or Requires(pre,post): openssh-server
.
A single RPM transaction isn't really atomic, but is treated that way. Without this additional information, it just ensures that the packages are installed by the end of this transaction, which is "good enough" most of the time.
Another option is to put the required configuration into a %triggerin
stanza, which I believe only executes once both packages are installed.
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