dh_installudev - Linux
Overview
dh_installudev is a tool designed for Debian packages to handle installing, removing, and updating udev rules. It provides a convenient and streamlined approach to managing udev rules within the Debian packaging system.
Syntax
dh_installudev [options] [debhelper options]
Options/Flags
- -u, –user: Install udev rules for the current user instead of the system.
- -g, –group=GROUP: Install udev rules for a specific group instead of the default group.
- -c, –copy: Copy udev rules instead of creating symlinks.
- -m, –mode=MODE: Set file permissions for installed udev rules.
- -r, –root=DIR: Set the root directory for copying udev rules.
- -b, –backup: Create backup copies of existing udev rules before overwriting them.
- -p, –preserve: Preserve existing udev rules and append new rules instead of overwriting them.
- –no-install: Perform dry run without actually installing udev rules.
- –no-remove: Skip removing old udev rules during upgrade or purge.
- –no-write: Skip writing udev rules to the system.
Examples
Simple Installation
To install udev rules for the system:
dh_installudev
Installation for a Specific User
To install udev rules for the user "myuser":
dh_installudev -u myuser
Preserving Existing Rules
To append new udev rules without overwriting existing ones:
dh_installudev -p
Dry Run
To verify the installation without making any changes:
dh_installudev --no-install
Common Issues
Permission Denied Errors
When installing udev rules for a non-root user, ensure the user has sufficient permissions to write to the /etc/udev/rules.d
directory.
Conflicting Rules
If multiple packages install udev rules for the same device, conflicts can occur. Use the --preserve
option to append rules and avoid overwriting.
Integration
dh_installudev integrates with the Debian packaging system and is typically used in the postinst
and prerm
scripts of Debian packages that include udev rules.