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====== Instal·lació de CentOS 7 - 3a part ======

En aquesta tercera part de la instal·lació del CentOS l'objectiu és configurar el sistema operatiu seguint les instruccions de Bruker,

  * [[https://repo-bbio.bruker.com/CentOS/7/TopSpinInstallationRequirements.html | CentOS 7 TopSpin Installation]]
  * [[https://repo-bbio.bruker.com/CentOS/7/Bruker-Addon/repoview/index.html | Bruker Extras CentOS 7 - Repository Overview]]

Un cop completada aquesta tercera part, l'ordinador hauria d'estar a punt per instal·lar el programari de Bruker: TopSpin, CodeMeter, etc.


===== Instal·lació de l'entorn del TopSpin =====

Per instal·lar els paquets necessaris pel TopSpin s'ha d'executar la comanda

  * ''yum install --enablerepo=bruker bruker-topspin-environ''

però abans, és preferible fer un simulacre i comprovar que no hi ha conflictes,

  * ''yum install --setopt tsflags=test --enablerepo=bruker bruker-topspin-environ''

El simulacre mostra que es descarregaran 153 paquets (65 MB) que, un cop instal·lats, ocuparan 207 MB; que tots corresponen a programes de 32-bits (arquitectura i686), i que no s'ha detectat cap conflicte, de forma que podem executar la comanda,

<file>
# yum install --enablerepo=bruker  bruker-topspin-environ                                                                                                           
Loaded plugins: fastestmirror, keys, langpacks, refresh-packagekit
Loading mirror speeds from cached hostfile
 * base: ftp.csuc.cat
 * elrepo: mirrors.coreix.net
 * epel: pkg.adfinis.com
 * extras: ftp.csuc.cat
 * updates: ftp.csuc.cat
Resolving Dependencies
--> Running transaction check
---> Package bruker-topspin-environ.x86_64 0:1.0-21.el7.brk will be installed
--> Processing Dependency: qt3(x86-32) for package: bruker-topspin-environ-1.0-21.el7.brk.x86_64
--> Processing Dependency: qt-x11(x86-32) for package: bruker-topspin-environ-1.0-21.el7.brk.x86_64
--> Processing Dependency: qt(x86-32) for package: bruker-topspin-environ-1.0-21.el7.brk.x86_64

[...]

---> Package libtasn1.i686 0:4.10-1.el7 will be installed
---> Package nettle.i686 0:2.7.1-9.el7_9 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================================================================================
 Package                                             Arch                                Version                                                   Repository                            Size
==============================================================================================================================================================================================
Installing:
 bruker-topspin-environ                              x86_64                              1.0-21.el7.brk                                            bruker                                15 k
Installing for dependencies:
 GConf2                                              i686                                3.2.6-8.el7                                               base                                 1.0 M
 ORBit2                                              i686                                2.14.19-13.el7                                            base                                 171 k
 PackageKit-glib                                     i686                                1.1.10-2.el7.centos                                       base                                 122 k

[...]

 xz-libs                                             i686                                5.2.2-1.el7                                               base                                 109 k
 zlib                                                i686                                1.2.7-19.el7_9                                            updates                               91 k

Transaction Summary
==============================================================================================================================================================================================
Install  1 Package (+152 Dependent packages)

Total download size: 65 M
Installed size: 207 M
Is this ok [y/d/N]: y
Downloading packages:
(1/153): ORBit2-2.14.19-13.el7.i686.rpm                                                     | 171 kB  00:00:00     
(2/153): PackageKit-glib-1.1.10-2.el7.centos.i686.rpm                                       | 122 kB  00:00:00     
(3/153): PackageKit-gtk3-module-1.1.10-2.el7.centos.i686.rpm                                |  12 kB  00:00:00     

(151/153): systemd-libs-219-78.el7_9.3.i686.rpm                                             | 425 kB  00:00:01     
(152/153): qt-4.8.7-9.el7_9.i686.rpm                                                        | 4.7 MB  00:00:06     
(153/153): qt-x11-4.8.7-9.el7_9.i686.rpm                                                    |  13 MB  00:01:25     
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                       |  65 MB  00:02:46     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : libgcc-4.8.5-44.el7.i686                                               1/153 
  Installing : nss-softokn-freebl-3.53.1-6.el7_9.i686                                 2/153 
  Installing : glibc-2.17-324.el7_9.i686                                              3/153 

[...]

  Installing : libcanberra-gtk3-0.30-9.el7.i686                                     151/153 
  Installing : libcanberra-gtk2-0.30-9.el7.i686                                     152/153 
  Installing : bruker-topspin-environ-1.0-21.el7.brk.x86_64                         153/153 
         All required 32bit libraries are present
  Verifying  : gnome-vfs2-2.24.4-14.el7.i686                                          1/153 
  Verifying  : libXdmcp-1.1.2-6.el7.i686                                              2/153 
  Verifying  : libsepol-2.5-10.el7.i686                                               3/153 

[...]

  Verifying  : harfbuzz-1.7.5-2.el7.i686                                            151/153 
  Verifying  : libcanberra-gtk2-0.30-9.el7.i686                                     152/153 
  Verifying  : ORBit2-2.14.19-13.el7.i686                                           153/153 

Installed:
  bruker-topspin-environ.x86_64 0:1.0-21.el7.brk                                                                                                                                              

Dependency Installed:
  GConf2.i686 0:3.2.6-8.el7             ORBit2.i686 0:2.14.19-13.el7            PackageKit-glib.i686 0:1.1.10-2.el7.centos    PackageKit-gtk3-module.i686 0:1.1.10-2.el7.centos 
  alsa-lib.i686 0:1.1.8-1.el7           at-spi2-atk.i686 0:2.26.2-1.el7         at-spi2-core.i686 0:2.28.0-1.el7              atk.i686 0:2.28.1-2.el7                           
  audit-libs.i686 0:2.8.5-4.el7         avahi-glib.i686 0:0.6.31-20.el7         avahi-libs.i686 0:0.6.31-20.el7               bzip2-libs.i686 0:1.0.6-13.el7                    

[...]

  popt.i686 0:1.13-16.el7               pulseaudio-libs.i686 0:10.0-6.el7_9     qt.i686 1:4.8.7-9.el7_9                       qt-x11.i686 1:4.8.7-9.el7_9                       
  qt3.i686 0:3.3.8b-51.el7              readline.i686 0:6.2-11.el7              rest.i686 0:0.8.1-2.el7                       sqlite.i686 0:3.7.17-8.el7_7.1                    
  systemd-libs.i686 0:219-78.el7_9.3    tcp_wrappers-libs.i686 0:7.6-77.el7     xz-libs.i686 0:5.2.2-1.el7                    zlib.i686 0:1.2.7-19.el7_9                        

Complete!
</file>




===== Instal·lació de l'entorn d'adquisició =====

Per instal·lar els paquets necessaris per l'adquisició s'ha d'executar la comanda

 * ''yum install --enablerepo=bruker bruker-acquisition-environ''

però abans, és preferible fer un simulacre i comprovar que no hi ha conflictes,

 * ''yum install --setopt tsflags=test --enablerepo=bruker bruker-acquisition-environ''

El simulacre mostra que es descarregaran 7 paquets (669 kB) que, un cop instal·lats, ocuparan 533 kB; que són programes de 64-bits o 32-bits, i que no s'ha detectat cap conflicte, de forma que podem executar la comanda,

<file>
# yum install --enablerepo=bruker bruker-acquisition-environ                                                                                                        
Loaded plugins: fastestmirror, keys, langpacks, refresh-packagekit
Loading mirror speeds from cached hostfile
 * base: ftp.csuc.cat
 * elrepo: mirrors.coreix.net
 * epel: fedora.cu.be
 * extras: ftp.csuc.cat
 * updates: ftp.csuc.cat
Resolving Dependencies
--> Running transaction check
---> Package bruker-acquisition-environ.noarch 0:1.0-12.el7.brk will be installed
--> Processing Dependency: bootparamd >= 0.18-2 for package: bruker-acquisition-environ-1.0-12.el7.brk.noarch
--> Processing Dependency: tftp-server for package: bruker-acquisition-environ-1.0-12.el7.brk.noarch
--> Processing Dependency: tftp for package: bruker-acquisition-environ-1.0-12.el7.brk.noarch
--> Processing Dependency: sssd-client(x86-32) for package: bruker-acquisition-environ-1.0-12.el7.brk.noarch
--> Running transaction check
---> Package bootparamd.x86_64 0:0.18-2.el7.brk will be installed
---> Package sssd-client.i686 0:1.16.5-10.el7_9.8 will be installed
--> Processing Dependency: libsss_nss_idmap.so.0(SSS_NSS_IDMAP_0.5.0) for package: sssd-client-1.16.5-10.el7_9.8.i686
--> Processing Dependency: libsss_nss_idmap.so.0(SSS_NSS_IDMAP_0.0.1) for package: sssd-client-1.16.5-10.el7_9.8.i686
--> Processing Dependency: libsss_nss_idmap.so.0 for package: sssd-client-1.16.5-10.el7_9.8.i686
--> Processing Dependency: libsss_idmap.so.0(SSS_IDMAP_0.4) for package: sssd-client-1.16.5-10.el7_9.8.i686
--> Processing Dependency: libsss_idmap.so.0 for package: sssd-client-1.16.5-10.el7_9.8.i686
---> Package tftp.x86_64 0:5.2-22.el7 will be installed
---> Package tftp-server.x86_64 0:5.2-22.el7 will be installed
--> Running transaction check
---> Package libsss_idmap.i686 0:1.16.5-10.el7_9.8 will be installed
---> Package libsss_nss_idmap.i686 0:1.16.5-10.el7_9.8 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================================================================================
 Package                                                  Arch                                 Version                                            Repository                             Size
==============================================================================================================================================================================================
Installing:
 bruker-acquisition-environ                               noarch                               1.0-12.el7.brk                                     bruker                                 11 k
Installing for dependencies:
 bootparamd                                               x86_64                               0.18-2.el7.brk                                     bruker                                 16 k
 libsss_idmap                                             i686                                 1.16.5-10.el7_9.8                                  updates                               162 k
 libsss_nss_idmap                                         i686                                 1.16.5-10.el7_9.8                                  updates                               168 k
 sssd-client                                              i686                                 1.16.5-10.el7_9.8                                  updates                               228 k
 tftp                                                     x86_64                               5.2-22.el7                                         base                                   38 k
 tftp-server                                              x86_64                               5.2-22.el7                                         base                                   47 k

Transaction Summary
==============================================================================================================================================================================================
Install  1 Package (+6 Dependent packages)


Total size: 669 k
Installed size: 533 k
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : tftp-server-5.2-22.el7.x86_64                                                                                                1/7 
  Installing : tftp-5.2-22.el7.x86_64                                                                                                       2/7 
  Installing : bootparamd-0.18-2.el7.brk.x86_64                                                                                             3/7 
Created symlink from /etc/systemd/system/multi-user.target.wants/bootparamd.service to /usr/lib/systemd/system/bootparamd.service.
  Installing : libsss_nss_idmap-1.16.5-10.el7_9.8.i686                                                                                      4/7 
  Installing : libsss_idmap-1.16.5-10.el7_9.8.i686                                                                                          5/7 
  Installing : sssd-client-1.16.5-10.el7_9.8.i686                                                                                           6/7 
  Installing : bruker-acquisition-environ-1.0-12.el7.brk.noarch                                                                             7/7 
  Verifying  : bootparamd-0.18-2.el7.brk.x86_64                                                                                             1/7 
  Verifying  : bruker-acquisition-environ-1.0-12.el7.brk.noarch                                                                             2/7 
  Verifying  : libsss_idmap-1.16.5-10.el7_9.8.i686                                                                                          3/7 
  Verifying  : tftp-5.2-22.el7.x86_64                                                                                                       4/7 
  Verifying  : libsss_nss_idmap-1.16.5-10.el7_9.8.i686                                                                                      5/7 
  Verifying  : sssd-client-1.16.5-10.el7_9.8.i686                                                                                           6/7 
  Verifying  : tftp-server-5.2-22.el7.x86_64                                                                                                7/7 

Installed:
  bruker-acquisition-environ.noarch 0:1.0-12.el7.brk                                                                                                                                          

Dependency Installed:
  bootparamd.x86_64 0:0.18-2.el7.brk   libsss_idmap.i686 0:1.16.5-10.el7_9.8   libsss_nss_idmap.i686 0:1.16.5-10.el7_9.8   sssd-client.i686 0:1.16.5-10.el7_9.8   tftp.x86_64 0:5.2-22.el7  
  tftp-server.x86_64 0:5.2-22.el7     

Complete!
</file>

===== Configuració per Z400 =====

Hi ha un paquet que aparentment podria servir per configurar una estació HP Z400 però que finalment decideixo no instal·lar. El paquet és,

  *  2015-08-31: [[https://repo-bbio.bruker.com/CentOS/7/Bruker-Addon/repoview/bruker-setup-z400.html | bruker-setup-z400-1.4-70.el7.brk]]

però després de llegir la descripció

  *  The Bruker Setup Utility provides all neccessary commands to prepare the HP-z440 (sic) Linux workstations for the master image and the first time boot after installation on a new system.

prefereixo descarregar-lo i comprovar el contingut abans de decidir si cal instal·lar-ho. La conclusió és que no és necessari pel funcionament de l'espectròmetre i que no val la pena instal·lar-ho.

===== Desinstal·lació de paquets =====

A l'inici del procés [[informatica:hp_z400_600_centos7_1 | d'instal·lació de CentOS 7]] es varen instal·lar paquets que Bruker no instal·la i que cal desinstal·lar, per exemple, l'entorn Gnome. Per identificar i eliminar aquests paquets genero un llistat dels paquets instal·lats i el comparo amb el llistat generat a l'ordinador del 500 MHz,

<file>
# rpm -qa | sort > avance3-600-pkglist.txt                                                  

# comm -23 avance3-600-pkglist.txt avance-neo-500-pkglist.txt > list-packages-only-in-600.txt
# comm -13 avance3-600-pkglist.txt avance-neo-500-pkglist.txt > list-packages-only-in-500.txt
</file>

Llavors genero un llistat que conté els paquets instal·lats només al 600 MHz i afegeixo el seu magatzem d'origen,

<file>
# for PKG in `cat list-packages-only-in-600.txt` ; 
> do echo $PKG"\t"`yumdb info $PKG | grep "from_repo "`;
> done > list-packages-only-in-600-with-repo.txt &

# wc -l list-packages-only-in-600.txt list-packages-only-in-600-with-repo.txt 
  609 list-packages-only-in-600.txt
  159 list-packages-only-in-600-with-repo.txt
  768 total

# tail -f list-packages-only-in-600-with-repo.txt 
gvfs-smb-1.36.2-4.el7.x86_64\t from_repo = anaconda
gvnc-0.7.0-3.el7.x86_64\t from_repo = anaconda
harfbuzz-1.7.5-2.el7.i686\t from_repo = base
highcontrast-qt5-0.1-2.el7.x86_64\t from_repo = anaconda
highlight-3.13-3.el7.x86_64\t from_repo = anaconda
hivex-1.3.10-6.11.el7_9.x86_64\t from_repo = updates
httpd-2.4.6-97.el7.centos.x86_64\t from_repo = updates
httpd-manual-2.4.6-97.el7.centos.noarch\t from_repo = updates
^C

[...]

# 
[1]+  Done        for PKG in `cat list-packages-only-in-600.txt`;
do
    echo $PKG"\t"`yumdb info $PKG | grep "from_repo "`;
done > list-packages-only-in-600-with-repo.txt

[root@cie-56-18 Downloads]# wc -l list-packages-only-in-600.txt list-packages-only-in-600-with-repo.txt  
  609 list-packages-only-in-600.txt
  609 list-packages-only-in-600-with-repo.txt
 1218 total
</file>

Com que molts dels paquets a desinstal·lar estan relacionats amb l'entorn gràfic, l'aturo,

<file>
[root@cie-56-18 Downloads]# systemctl status gdm.service 
[...]
Aug 10 09:23:11 cie-56-18.uab.es systemd[1]: Starting GNOME Display Manager...
Aug 10 09:23:11 cie-56-18.uab.es systemd[1]: Started GNOME Display Manager.

[root@cie-56-18 Downloads]# systemctl stop gdm.service

[root@cie-56-18 Downloads]# systemctl status gdm.service 
[...]
Aug 10 09:23:11 cie-56-18.uab.es systemd[1]: Starting GNOME Display Manager...
Aug 10 09:23:11 cie-56-18.uab.es systemd[1]: Started GNOME Display Manager.
Aug 10 10:24:21 cie-56-18.uab.es systemd[1]: Stopping GNOME Display Manager...
Aug 10 10:24:21 cie-56-18.uab.es systemd[1]: Stopped GNOME Display Manager.
</file>

i començo a desinstal·lar paquets de Gnome. Primer comprovo si està instal·lat com a "Environment Group"

<file>
# yum grouplist
[...]
Available Environment Groups:
   Minimal Install
[...]
   GNOME Desktop
   KDE Plasma Workspaces
   Development and Creative Workstation
Available Groups:
   Cinnamon
   Compatibility Libraries
[...]
   System Management
   TurboGears application framework
   Xfce
Done
</file>

i com que no està instal·lat com grup, començo a desinstal·lar les paquets a mà, per exemple,

<file>
# yum remove nautilus
[...]
Removed:
  nautilus.x86_64 0:3.26.3.1-7.el7                                                                                    

Dependency Removed:
  evince-nautilus.x86_64 0:3.28.2-10.el7                gnome-classic-session.noarch 0:3.28.1-17.el7_9               

Complete!
</file>

Al final faig servir les comandes

  * ''yum autoremove'' per eliminar paquets que ja no són necessaris,
  * ''package-cleanup --leaves'' per comprovar quins altres paquets es podrien eliminar perquè no els necessita cap altre paquet, i llavors
  * ''yum remove `package-cleanup --leaves`'' per eliminar-los;

fins que ja no es troba cap paquet innecessari.

<WRAP todo>
Per ara no elimino cap kernel antic, però caldrà fer-ho en algun moment fent servir la comanda ''yum remove kernel'' o preferiblement ''package-cleanup –oldkernels –count=2'',

<file>
# yum remove kernel
Loaded plugins: fastestmirror, keys, langpacks, refresh-packagekit
Skipping the running kernel: kernel-3.10.0-1160.25.1.el7.x86_64
Resolving Dependencies
--> Running transaction check
---> Package kernel.x86_64 0:3.10.0-1160.el7 will be erased
---> Package kernel.x86_64 0:3.10.0-1160.21.1.el7 will be erased
---> Package kernel.x86_64 0:3.10.0-1160.36.2.el7 will be erased
--> Finished Dependency Resolution

Dependencies Resolved

======================================================================================================================
 Package                Arch                   Version                                Repository                 Size
======================================================================================================================
Removing:
 kernel                 x86_64                 3.10.0-1160.el7                        @anaconda                  64 M
 kernel                 x86_64                 3.10.0-1160.21.1.el7                   @updates                   64 M
 kernel                 x86_64                 3.10.0-1160.36.2.el7                   @updates                   64 M

Transaction Summary
======================================================================================================================
Remove  3 Packages

Installed size: 193 M
Is this ok [y/N]: N
</file>
</WRAP>
==== Enllaços d'interès ====

  * [[https://stackoverflow.com/questions/18204904/fast-way-of-finding-lines-in-one-file-that-are-not-in-another | bash - Fast way of finding lines in one file that are not in another?]]
  * [[https://unix.stackexchange.com/questions/28158/is-there-a-tool-to-get-the-lines-in-one-file-that-are-not-in-another | Is there a tool to get the lines in one file that are not in another?]]
  * [[https://serverfault.com/questions/62026/how-to-know-from-which-yum-repository-a-package-has-been-installed | How to know from which yum repository a package has been installed?]]
  * [[https://linuxconfig.org/how-to-remove-orphaned-packages-on-centos-linux | How to remove orphaned packages on CentOS Linux]]
  * [[https://superuser.com/questions/178917/why-doesnt-yum-clean-up-orphaned-packages | Why Doesn't Yum Clean Up Orphaned Packages?]]
  * [[https://www.pc-freak.net/blog/remove-unused-kernels-centos-linux-howto/ | Remove old unused kernels and cleanup orphaned packages on CentOS / RHEL/ Fedora and Debian Linux]]

===== Connexió i configuració dels dos monitors =====

Connecto a l'estació de treball el monitor ViewSonic VA2445 SERIES (sortida DisplayPort amb adaptador a DVI) i el monitor HP LA1951 (sortida DVI), i l'ordinador els reconeix i configura correctament. El monitor ViewSonic es configura com pantalla principal (finestra del TopSpin) i el monitor HP com pantalla secundària (finestres de la BSMS, de lock, etc.).

===== Configuració de KDE =====

Per tal que es faci servir l'entorn KDE en comptes del Gnome, creo un fitxer ''/etc/sysconfig/desktop'' on poso ''DESKTOP=KDE''.

<file>
# cat desktop 
DESKTOP=KDE
</file>

Llavors engego l'entorn gràfic,

<file>
[root@cie-56-18 sysconfig]# systemctl status gdm.service 
[...]
Aug 10 09:23:11 cie-56-18.uab.es systemd[1]: Starting GNOME Display Manager...
Aug 10 09:23:11 cie-56-18.uab.es systemd[1]: Started GNOME Display Manager.
Aug 10 10:24:21 cie-56-18.uab.es systemd[1]: Stopping GNOME Display Manager...
Aug 10 10:24:21 cie-56-18.uab.es systemd[1]: Stopped GNOME Display Manager.

[root@cie-56-18 sysconfig]# systemctl start gdm.service 
[root@cie-56-18 sysconfig]# systemctl status gdm.service 
[...]
Aug 10 14:30:20 cie-56-18.uab.es systemd[1]: Starting GNOME Display Manager...
Aug 10 14:30:20 cie-56-18.uab.es systemd[1]: Started GNOME Display Manager.
[root@cie-56-18 sysconfig]# 
</file>

i a la pantalla del GDM, abans d'entrar, comprovo quin entorn es farà servir i veig que al llistat d'entorns surt el **KDE Plasma Environment** com a opció seleccionada, i que no surt el Gnome al llistat.

Llavors obro una sessió i comprovo que es carrega el KDE, i que hi ha uns quants processos relacionats amb el KDE,

<file>
# ps ax | grep -i kde
   28 ?        S      0:00 [kdevtmpfs]
25835 ?        Ss     0:00 /bin/sh /usr/bin/startkde
25937 ?        Ss     0:00 /usr/bin/ssh-agent /bin/sh -c exec -l /bin/bash -c "/usr/bin/startkde"
26005 ?        S      0:00 /usr/libexec/kde4/start_kdeinit +kcminit_startup
26006 ?        Ss     0:00 kdeinit4: kdeinit4 Running...
26007 ?        S      0:00 kdeinit4: klauncher [kdeinit] --fd=9
26009 ?        Sl     0:00 kdeinit4: kded4 [kdeinit]
26035 ?        S      0:00 kdeinit4: kglobalaccel [kdeinit]
26044 ?        S      0:00 kdeinit4: kwalletd [kdeinit]
26134 ?        Sl     0:00 kdeinit4: ksmserver [kdeinit]
26170 ?        Sl     0:04 kdeinit4: plasma-desktop [kdeinit]
26379 ?        Sl     0:00 kdeinit4: krunner [kdeinit]
26404 ?        Sl     0:00 /usr/libexec/kde4/polkit-kde-authentication-agent-1
26425 ?        S      0:00 kdeinit4: klipper [kdeinit]
26437 ?        Sl     0:00 kdeinit4: kmix [kdeinit]
26439 ?        Sl     0:00 /usr/bin/xsettings-kde
27152 ?        Sl     0:00 /usr/libexec/kde4/kscreenlocker_greet --immediateLock
31419 pts/2    S+     0:00 grep --color=auto -i kde

# pstree --ascii
systemd-+-ModemManager---2*[{ModemManager}]
        :
        :
        |-gdm-+-X---{X}
        |     |-gdm-session-wor-+-startkde-+-kwrapper4
        |     |                 |          `-ssh-agent
        |     |                 `-2*[{gdm-session-wor}]
        |     `-3*[{gdm}]
        :
        :
        |-kactivitymanage---5*[{kactivitymanage}]
        |-kded4---7*[{kded4}]
        |-kdeinit4-+-abrt-applet---2*[{abrt-applet}]
        |          |-klauncher
        |          |-ksmserver-+-kscreenlocker_g---{kscreenlocker_g}
        |          |           |-kwin
        |          |           `-{ksmserver}
        |          |-seapplet---2*[{seapplet}]
        |          |-tracker-extract---13*[{tracker-extract}]
        |          |-tracker-miner-a---3*[{tracker-miner-a}]
        |          |-tracker-miner-u---3*[{tracker-miner-u}]
        |          `-xsettings-kde---4*[{xsettings-kde}]
        |-kglobalaccel
        |-klipper
        |-kmix---{kmix}
        |-knotify4---{knotify4}
        |-krunner---{krunner}
        |-kuiserver
        |-kwalletd
        :
        :
        |-plasma-desktop-+-ksysguardd
        |                `-4*[{plasma-desktop}]
        |-polkit-kde-auth---2*[{polkit-kde-auth}]
        :
        :
        |-start_kdeinit
        :
        :
        |-udisksd---4*[{udisksd}]
        |-upowerd---2*[{upowerd}]
        |-wpa_supplicant
        `-xinetd

</file>
==== Enllaços d'interès ====

  * [[https://unix.stackexchange.com/questions/315580/set-kde-desktop-environment-like-default-centos-7 | Set KDE Desktop Environment like default CentOS 7]]
  * [[https://unix.stackexchange.com/questions/181503/how-to-install-desktop-environments-on-centos-7 | How to install Desktop Environments on CentOS 7?]]

===== Enllaç a la 4a part =====

[[informatica:hp_z400_600_centos7_4 | Quarta part de la instal·lació del CentOS]]
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