• El mundo es distinto ahora, pero los errores son los de siempre - Daniel Cantos Pardo
  • Era el primer viaje que realizaban sin tutor y saboreaban la libertad que con esa excitación que produce todo lo nuevo - Pablo Gonz
  • La falta de créditos retardó en tres años la partida de una verdadera expedición solarista - Stanislav Lem
  • El futuro ya está aquí, sólo que desigualmente repartido - W. Gibson
  • Me sentí como un punk que hubiera salido a comprar una navaja automática y volviera a casa con una pequeña bomba de neutrones - W. Gibson
  • A la mañana siguiente, realizaron su primer anochecer estelar - Diane Duane
  • —¿Un sol azul? —dijo Karellen, no muchas horas más tarde—. La identificación no puede ser muy difícil - Arthur C. Clarke
  • Aun así, en ese brillante interior había un núcleo oscuro, un indicio de algo encapsulado - Alastair Reynolds
  • El cielo sobre el puerto tenía el color de una pantalla de televisor sintonizado en un canal muerto - W. Gibson
  • Hace frío señor, en este campo —dijo el señor Tagomi—. Podemos regresar al centro de la ciudad en el helicóptero de la Misión, ¿le parece correcto? - Philip K. Dik
  • ¿Que es el ciberespacio? - El mundo - W. Gibson
  • Tengo sus anotaciones, estaban en su escritorio - Philip K. Dik
  • Esta formación constituye, en su totalidad, un desarrollo tridimensional de algún tipo de ecuación de orden superior - Stanislaw Lem
  • De nuevo la mezcla de rojo y verde, mirándole desde la naturaleza - Kim Stanley Robinson
  • Había un lugar en el Nostromo donde Dallas ocasionalmente encontraba algunos momentos de completa intimidad y al mismo tiempo se sentía razonablemente seguro. Era como una matriz artificial - Alan Dean Foster

[ACTUALIZACIÓN] #ARCHLINUX. Changes to default password hashing algorithm and umask settings

Entrada escrita por: Fernando Lanero Barbero
0
[ACTUALIZACIÓN] #ARCHLINUX

The latest and greatest news from the Arch Linux distribution.

(https://archlinux.org/news/changes-to-default-password-hashing-algorithm-and-umask-settings/) Changes to default password hashing algorithm and umask settings
Sep 22nd 2023, 22:26

With shadow >= 4.14.0, Arch Linux's default password hashing algorithm changed from SHA512 to yescrypt [1].
Furthermore, the umask [2] settings are now configured in /etc/login.defs instead of /etc/profile.
This should not require any manual intervention.
Reasons for Yescrypt
The password-based key derivation function (KDF) and password hashing scheme yescrypt has been chosen due to its adoption (readily available in libxcrypt, which is used by pam [3]) and its stronger resilience towards password cracking attempts over SHA512.
Although the winner of the Password Hashing Competition [4] has been argon2, this even more resilient algorithm is not yet available in libxcrypt [5][6].
Configuring yescrypt
The YESCRYPT_COST_FACTOR setting in /etc/login.defs is currently without effect, until pam implements reading its value [7]. If a YESCRYPT_COST_FACTOR higher (or lower) than the default (5) is needed, it can be set using the rounds option of the pam_unix [8] module (i.e. in /etc/pam.d/system-auth).
General list of changes

yescrypt is used as default password hashing algorithm, instead of SHA512

pam honors the chosen ENCRYPT_METHOD in /etc/login.defs and does not override the chosen method anymore
changes in the filesystem (>= 2023.09.18) and pambase (>= 20230918) packages ensure, that umask is set centrally in /etc/login.defs instead of /etc/profile

[1] https://www.openwall.com/yescrypt/
[2] https://man.archlinux.org/man/umask.1p
[3] https://wiki.archlinux.org/title/PAM
[4] https://www.password-hashing.net/
[5] https://github.com/besser82/libxcrypt/pull/113
[6] https://github.com/besser82/libxcrypt/pull/150
[7] https://github.com/linux-pam/linux-pam/issues/607
[8] https://man.archlinux.org/man/pam_unix.8

 

https://archlinux.org/news/changes-to-default-password-hashing-algorithm-and-umask-settings/

Toda la información y las últimas novedades relativas al software libre y a Ubuntu las puedes encontrar en (http://linuxleon.org) linuxleon.org y (http://ubuntuleon.com) ubuntuleon.com.

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[ACTUALIZACIÓN] #ARCHLINUX. ansible-core >= 2.15.3-1 update may require manual intervention

Entrada escrita por: Fernando Lanero Barbero
0
[ACTUALIZACIÓN] #ARCHLINUX

The latest and greatest news from the Arch Linux distribution.

(https://archlinux.org/news/ansible-core-2153-1-update-may-require-manual-intervention/) ansible-core >= 2.15.3-1 update may require manual intervention
Aug 19th 2023, 12:41

As of ansible-core 2.15.3, upstream moved documentation and examples to a separate (https://github.com/ansible/ansible-documentation) dedicated repository (see the (https://github.com/ansible/ansible/blob/v2.15.3/changelogs/CHANGELOG-v2.15.rst#minor-changes) related changelogs).
This means that, starting from version 2.15.3 the ansible-core package will stop shipping documentation and a default configuration example under /etc/ansible/ansible.cfg.
Regarding the documentation, it is available online: (https://docs.ansible.com/) https://docs.ansible.com/
As for the configuration file, as explained in the (https://wiki.archlinux.org/title/Ansible#Configuration) wiki, a base config can be generated with the following command:
ansible-config init --disabled > ansible.cfg
After updating from ansible-core <= 2.15.2-1 to >= 2.15.3-1, everyone using a custom global Ansible configuration file stored under /etc/ansible/ansible.cfg will have their configuration saved as a pacsave file.
To restore it, run the following command:
mv /etc/ansible/ansible.cfg.pacsave /etc/ansible/ansible.cfg

 

https://archlinux.org/news/ansible-core-2153-1-update-may-require-manual-intervention/

Toda la información y las últimas novedades relativas al software libre y a Ubuntu las puedes encontrar en (http://linuxleon.org) linuxleon.org y (http://ubuntuleon.com) ubuntuleon.com.

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[ACTUALIZACIÓN] #ARCHLINUX. budgie-desktop >= 10.7.2-6 update requires manual intervention

Entrada escrita por: Fernando Lanero Barbero
0
[ACTUALIZACIÓN] #ARCHLINUX

The latest and greatest news from the Arch Linux distribution.

(https://archlinux.org/news/budgie-desktop-1072-6-update-requires-manual-intervention/) budgie-desktop >= 10.7.2-6 update requires manual intervention
Aug 11th 2023, 16:55

When upgrading from budgie-desktop 10.7.2-5 to 10.7.2-6, the package mutter43 must be replaced with magpie-wm, which currently depends on mutter. As mutter43 conflicts with mutter, manual intervention is required to complete the upgrade.
First remove mutter43, then immediately perform the upgrade. Do not relog or
reboot between these steps.
pacman -Rdd mutter43
pacman -Syu

 

https://archlinux.org/news/budgie-desktop-1072-6-update-requires-manual-intervention/

Toda la información y las últimas novedades relativas al software libre y a Ubuntu las puedes encontrar en (http://linuxleon.org) linuxleon.org y (http://ubuntuleon.com) ubuntuleon.com.

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[ACTUALIZACIÓN] #ARCHLINUX. TeX Live package reorganization

Entrada escrita por: Fernando Lanero Barbero
0
[ACTUALIZACIÓN] #ARCHLINUX

The latest and greatest news from the Arch Linux distribution.

(https://archlinux.org/news/tex-live-package-reorganization/) TeX Live package reorganization
Jun 18th 2023, 11:14

Starting from version 2023.66594-9, TeX Live packages have been reorganized to mirror upstream collections. Even though the new texlive-basic replaces the old texlive-core, many of the texlive-core contents (including language specific files) are now split between different packages. To find out which Arch package contains a specific CTAN package, you can use the tlmgr utility, eg.
$ tlmgr info euler | grep collection
collection: collection-latexrecommended

which means the euler CTAN package is contained in texlive-latexrecommended. You may also use pacman -F to query for specific files.
A new metapackage texlive-meta is available to install all subpackages (except for language specific ones), and the new texlive-doc package provides the full documentation for offline use.

 

https://archlinux.org/news/tex-live-package-reorganization/

Toda la información y las últimas novedades relativas al software libre y a Ubuntu las puedes encontrar en (http://linuxleon.org) linuxleon.org y (http://ubuntuleon.com) ubuntuleon.com.

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[ACTUALIZACIÓN] #ARCHLINUX. OpenBLAS >= 0.3.23-2 update requires manual intervention

Entrada escrita por: Fernando Lanero Barbero
0
[ACTUALIZACIÓN] #ARCHLINUX

The latest and greatest news from the Arch Linux distribution.

(https://archlinux.org/news/openblas-0323-2-update-requires-manual-intervention/) OpenBLAS >= 0.3.23-2 update requires manual intervention
Jun 14th 2023, 22:27

The openblas package prior to version 0.3.23-2 doesn't ship optimized
LAPACK routine and CBLAS/LAPACKE interfaces for compatibility. This
decision has been reverted now, and the ability to choose a different
default system BLAS/LAPACK implementation while keeping openblas
installed is now provided to allow future co-installation of BLIS,
ATLAS, etc.
The default BLAS implementation will be used for most packages like
NumPy or R. Please install "blas-openblas" and "blas64-openblas" to make
OpenBLAS the default BLAS implementation, just like the old behavior.
Unfortunately you will get errors on updating if you currently have
OpenBLAS installed as the default BLAS implementation:
error: failed to prepare transaction (could not satisfy dependencies)
:: installing openblas (0.3.23-2) breaks dependency 'blas' required by cblas
:: installing openblas (0.3.23-2) breaks dependency 'blas' required by
lapack
Please append your preferred default BLAS implementation to the regular
-Syu command line to get around it. For example:
pacman -Syu blas-openblas

or
pacman -Syu blas


 

https://archlinux.org/news/openblas-0323-2-update-requires-manual-intervention/

Toda la información y las últimas novedades relativas al software libre y a Ubuntu las puedes encontrar en (http://linuxleon.org) linuxleon.org y (http://ubuntuleon.com) ubuntuleon.com.

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