Chapter 14. Shells and command-line tools
14.1. Localization is distributed in multiple packages
In RHEL 8, locales and translations are no longer provided by the single
glibc-common package. Instead, every locale and language is available in a
glibc-langpack-CODE package. Additionally, not all locales are installed by default, only these selected in the installer. Users must install all further locale packages that they need separately.
The meta-packages which install extra add-on packages containing translations, dictionaries and locales for every package installed on the system are called langpacks.
For more information see Installing and using langpacks.
14.2. Removed support for all-numeric user and group names
In Red Hat Enterprise Linux (RHEL) 8, the
groupadd commands does not allow you to use user and group names consisting purely of numeric characters. The reason for not allowing such names is that this can confuse tools that work with user and group names and user and group ids, which are numbers.
See more information about Managing users using command-line tools.
14.3. The nobody user replaces nfsnobody
Red Hat Enterprise Linux (RHEL) 7 used the
nobody user and group pair with the ID of 99 and the
nfsnobody user and group pair with the ID of 65534, which is also the default kernel overflow ID.
In RHEL 8, both of these pair have been merged into the
nobody user and group pair, which uses the ID of 65534. The
nfsnobody pair is not created in RHEL 8.
This change reduces the confusion about files that are owned by
nobody but are not related to NFS.
14.4. Version control systems
RHEL 8 provides the following version control systems:
Git 2.18, a distributed revision control system with a decentralized architecture.
Mercurial 4.8, a lightweight distributed version control system, designed for efficient handling of large projects.
Subversion 1.10, a centralized version control system.
Note that the Concurrent Versions System (CVS) and Revision Control System (RCS), available in RHEL 7, are not distributed with RHEL 8.
14.4.1. Notable changes in
Subversion 1.10 introduces a number of new features since the version 1.7 distributed in RHEL 7, as well as the following compatibility changes:
Due to incompatibilities in the
Subversionlibraries used for supporting language bindings,
Python 3bindings for
Subversion 1.10are unavailable. As a consequence, applications that require
Repositories based on
Berkeley DBare no longer supported. Before migrating, back up repositories created with
Subversion 1.7by using the
svnadmin dumpcommand. After installing RHEL 8, restore the repositories using the
Existing working copies checked out by the
Subversion 1.7client in RHEL 7 must be upgraded to the new format before they can be used from
Subversion 1.10. After installing RHEL 8, run the
svn upgradecommand in each working copy.
Smartcard authentication for accessing repositories using
https://is no longer supported.