Difference between revisions of "Ubuntu 20.4"

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==Installing Software==
 
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===General Things===
 
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Install Languages following request
 
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Install gnome-tweak-tool and synaptic
 
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sudo apt-get install gnome-tweaks
 
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sudo apt-get install synaptic
 
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Choose Workspaces static. This and the number of workspace is changed with gnome tweak tool
 
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Install Extras
 
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sudo apt-get install ubuntu-restricted-extras
 
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sudo apt-get install flashplugin-installer
 
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sudo apt-get install nautilus-dropbox
 
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sudo apt-get install libappindicator1
 
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sudo apt-get install rar
 
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To enable Control-Alt-Backspace to kill X server
 
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sudo dpkg-reconfigure keyboard-configuration
 
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hit enter to accept curernt values until you get to the item Control-Alt-Backspace
 
  
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To Hide User List in Ubuntu 18.04 Login Screen
 
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Become root
 
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sudo -i
 
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Then switch to user gdm, which is required to run gsettings to configure gdm settings.
 
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su gdm -s /bin/bash
 
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Finally hide user list from login screen using Gsettings:
 
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gsettings set org.gnome.login-screen disable-user-list true
 
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Install unison
 
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sudo apt-get install unison
 
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sudo apt-get install unison-gtk
 
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Install keepassx: use synaptic
 
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Install sshd in the server
 
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sudo apt install openssh-server
 
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Then enable Xforward in /etc/ssh/ssh_config an /etc/sshd_config
 
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To have passwords stored
 
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sudo apt-get install libgnome-keyring0
 
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===Skype===
 
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Open "Software & Updates" and enable Canonical partners repository under Other Software tab.
 
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Then do
 
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sudo apt-get update
 
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sudo apt-get install skypeforlinux
 
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===Telegram===
 
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Install with
 
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sudo snap install telegram-desktop
 
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===Emacs and LaTeX (and Text in general)===
 
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For editing and text processing install: emacs, latex, ispell, auctex
 
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sudo apt-get install emacs texlive auctex bibtool
 
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sudo apt-get install texlive-bibtex-extra texlive-formats-extra texlive-fonts-extra texlive-lang-portuguese texlive-science
 
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sudo apt-get install ispell iportuguese
 
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sudo apt-get install latex2html
 
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sudo apt install texlive-publishers
 
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sudo apt install texlive-pstricks
 
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For latex2html copy the file .latex2html-init from the previous installation to preserve your definitions.
 
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For auctex to work you have to add the following lines to your .emacs file
 
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(require 'tex-site)
 
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(add-hook 'LaTeX-mode-hook 'turn-on-reftex)
 
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(setq reftex-enable-partial-scans t)
 
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(setq reftex-save-parse-info t)
 
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(setq reftex-use-multiple-selection-buffers t)
 
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(setq reftex-plug-into-AUCTeX t)
 
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(setq reftex-texpath-environment-variables '("TEXINPUTS"))
 
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(setq reftex-bibpath-environment-variables '("BIBINPUTS"))
 
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Emacs: To change between fixed number of columns and wrap text
 
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Writing with emacs is simpler in auto-fill-mode with a fixed number of columns (70 for instance). But sometimes we have to copy this text into online forms where you want it wrapped. To do this do the following
 
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Change into a fill mode with a large number of columns. For example 10000 columns
 
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C-x f 10000
 
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Select a paragraph and set auto fill
 
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M-x fill-individual-paragraphs
 
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In my case I have the F4 key to do this in the .emacs file
 
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If you want you can set back to 70 columns
 
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C-x f 70
 
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Problem with d-bus. If you get
 
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(emacs:24886): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
 
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Failed to connect to socket /tmp/dbus-7vPUX2fQ7b: Connection refused
 
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it is probbaly caused by .dbus subdir being owned by root:root. Change it
 
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sudo chown -R user:user .dbus
 
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How to print in color with a2ps
 
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a2ps --pro=color -o output.ps infile.txt
 
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or for output in one page
 
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a2ps -1 --pro=color -o output.ps infile.txt
 
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Problem with indent in environment align
 
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Customize LaTeX-indent-environment-list:
 
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M-x customize-variable RET
 
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LaTeX-indent-environment-list RET
 
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and uncheck align and align*
 
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The changes are save in .emacs
 
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To change tab space in a file
 
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M-x set-variable RET
 
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tab-width RET
 
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4
 
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4 is an example of course. This works only for the session.
 
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===Email===
 
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===Chrome===
 
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===Graphics===
 
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====Installation====
 
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====Problems====
 
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====Tricks for gnuplot====
 
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===Compilers and Maths====
 
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====gnu compilers, at and octave====
 
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====Mathematica====
 
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====Fortran====
 
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====LoopTools====
 
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===Apache MySQL and PHP Server===
 
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===Allowing www-data group in UserDir directories===
 
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===Install Apache with SSL===
 
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===Install SSL Certificates===
 
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===OwnCloud and SSL===
 
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===OwnCloud Upgrades===
 
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===OwnCloud Upload Folders===
 
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===Owncloud Repair Files===
 
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===Owncloud Unlock Files===
 
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===MySQL===
 
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===PHP===
 
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====Installation Questions====
 
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====Connection with MySQL====
 
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====To use with Emacs====
 
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===MediaWiki===
 
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====Install Mediaki in Ubuntu 16.04====
 
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====Export the Mediawiki Database in SQL====
 
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====Export into site with all the files====
 
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====Import the Mediawiki Database in SQL====
 
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====Import the Mediawiki Database in from HTML====
 
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====Secure LocalSettings.php====
 
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====Cleaning====
 
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====Change Setting to see errors====
 
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===Java===
 
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===Adobe Reader===
 
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===Rotate a PDF under Ubuntu Linux===
 
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===Dvips fonts===
 
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===Sendmail and alpine===
 
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===Other Software===
 
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===MS Fonts===
 
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===Firewall===
 
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===Stop avhai-deamon===
 
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==Tunning==
 
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===Grub screen resolution===
 
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===Disable Password after Suspend===
 
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===Cleaning up===
 
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===Change boot order in grub===
 
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===Setting smart host in sendmail===
 
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===System Load Indicator===
 

Latest revision as of 13:23, 20 October 2020

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