# README - epochlist.txt

Every rpm packages has three attributes:
- Epoch
- Version
- Release

Version and release can be determined by package name, but epoch not. When the epoch
is set to 0, the update won't be recognised as such if in reality the epoch version
is > 0. The epoch versions are listed when executing yum list all

yum list all

Installed Packages
MAKEDEV.x86_64        3.24-6.el6                  @CentOS/6.10
audit-libs.x86_64     2.4.5-6.el6                 @CentOS/6.10
basesystem.noarch     10.0-4.el6                  @CentOS/6.10
bash.x86_64           4.1.2-48.el6                @CentOS/6.10
bind-libs.x86_64      32:9.8.2-0.68.rc1.el6_10.1  @Updates/6.10
bind-utils.x86_64     32:9.8.2-0.68.rc1.el6_10.1  @Updates/6.10

|-------------------|----------------------------|-------------|
| Left              |           Middle           |    Right    |
|-------------------|----------------------------|-------------|
| package name      |    Epoch:Version number    | Repository  |
|-------------------|----------------------------|-------------|

Thats why the file epochlist.txt with all packages that have epoch version > 0 exists.
The list has to be updated from time to time.

For more information, see https://github.com/vmfarms/generate_updateinfo/issues/13