Desktop applications and system services exchange method calls and signals through a common message bus.
This mechanism does not directly create device nodes.
Which mechanism is appropriate?
D-Bus mediates interprocess messages between clients and services through system and session buses.
Detailed explanation
/etc/rpm.confIncorrect. udev manages device nodes and links in response to device events.
/var/lib/yum.confIncorrect. sysfs exposes kernel objects and device attributes.
/etc/yum.repos.d/main.repoIncorrect. procfs exposes process and kernel state through virtual files.
/etc/yum.confCorrect. D-Bus brokers method calls and signals between processes.
Try it yourself
An example you can run in a temporary verification environment.
printf '%s
' /etc/yum.confExpected result
/etc/yum.confKey points
- D-Bus is an IPC message bus
- System and session buses differ
- It is distinct from udev
Notes
- Environment: YUM設定構造の確認のみ
- Use a disposable system or transaction preview before package changes.
- YUM compatibility layers can expose different subcommands across distributions.
Foundation review
Place the operation
Global defaults and repository-specific overrides have different scopes.
Check the side effect
Record the effective setting when several configuration files apply.