System variables

System Paths

@{MOUNTDIRS}¶

@{MOUNTDIRS} is a space-separated list of where user mount directories are stored, for programs that must enumerate all mount directories on a system.

@{MOUNTDIRS}=/media/ @{run}/media/@{user}/ /mnt/

@{MOUNTS}¶

@{MOUNTS} is a space-separated list of all user mounted directories.

@{MOUNTS}=@{MOUNTDIRS}/*/ @{run}/user/@{uid}/gvfs/

@{bin}¶

Common places for binaries and libraries across distributions

@{bin}=/{,usr/}bin
@{sbin}=/{,usr/}sbin     #aa:only apt zypper
@{sbin}=/{,usr/}{,s}bin  #aa:only pacman
@{lib}=/{,usr/}lib{,exec,32,64}

@{tmp}¶

Common places for temporary files /tmp/user/@{uid}/ is needed when using .... (default on Debian)

@{tmp}=/tmp/ /tmp/user/@{uid}/

@{efi}¶

Common places for EFI

@{efi}=/boot/ /efi/ /boot/efi/

@{arch}¶

System Variables Common architecture names

@{arch}=x86[-_]64 x64 amd64 i386 i686

@{busname}¶

Dbus unique name

@{busname}=:1.@{u16} :not.active.yet

@{udbus}¶

Unix dbus address prefix

@{udbus}=@{h}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}{@{h},}

@{udbus}¶

dbus-broker special addresses

@{udbus}+=@{int12}@{int}

@{uuid}¶

Universally unique identifier

@{uuid}=@{hex8}[-_]@{hex4}[-_]@{hex4}[-_]@{hex4}[-_]@{hex12}

@{user}¶

Username & group valid characters

@{user}=[a-zA-Z_]{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}{@{w},}
@{group}=@{user}

@{version}¶

Semantic version

@{version}=@{u16}{.@{u16},}{.@{u16},}{{-,_}@{rand},}

@{multiarch}¶

OpenSUSE does not have the same multiarch structure

@{multiarch}+=*-suse-linux*

@{pci_bus}¶

System Internal

@{pci_bus}=pci@{hex4}:@{hex2}

@{pci_id}¶

Shortcut for PCI device

@{pci_id}=@{hex4}:@{hex2}:@{hex2}.@{h}
@{pci}=@{pci_bus}/**/

@{dynamic}¶

Udev data dynamic assignment ranges See https://raw.githubusercontent.com/torvalds/linux/master/Documentation/admin-guide/devices.txt

@{dynamic}=23[4-9] 24[0-9] 25[0-4]                       # range 234 to 254
@{dynamic}+=38[4-9] 39[0-9] 4[0-9][0-9] 50[0-9] 51[0-1]  # range 384 to 511

@{att}¶

Default attachment path when re-attached path disconnected path is ignored. Disabled on abi3 and Ubuntu 25.04+ See https://apparmor.pujol.io/development/internal/#re-attached-path

@{att}=""