Differences

This shows you the differences between two versions of the page.

--- ubuntu_notes [2015/03/05 20:37] – created juckins
+++ ubuntu_notes [2020/07/20 15:50] – juckins
@@ Line 1: / Line 1: @@
-[[http://example.com|Installing Ubuntu 12.04 LTS on VirtualBox]]
+==== Ubuntu Notes ====
+__20 Jul 2020__
+Updated VirtualBox to 6.1.12 and Ubuntu 18 would not login after MATE authentication screen (just got black screen).  Went into /opt/VBoxGuestAdditions-6.1.8 and uninstalled the Guest Additions.  Rebooted, logged in correctly.  Then installed latest version of GuestAdditions.  Rebooted again, logged in and all worked correctly.
+__Other Notes__
+[[https://linuxize.com/post/how-to-install-teamviewer-on-ubuntu-18-04/|TeamViewer installation]]
+[[https://linuxconfig.org/how-to-install-lamp-ubuntu-18-04-bionic-beaver-linux-apache-mysql-php|LAMP on Ubuntu 18.04]]
+[[http://howtoubuntu.org/how-to-install-lamp-on-ubuntu|General LAMP install]]
+[[https://help.ubuntu.com/stable/ubuntu-help/net-firewall-on-off.html|Firewall settings]]
+[[https://askubuntu.com/questions/44418/how-to-enable-root-login|Enabling root]] (or use sudo -i)
+Release info:
+<code>
+lsb_release -a
+</code>
+View installed kernels:
+<code>
+# dpkg --list | grep linux-image
+</code>
+Remove old kernels:
+  * https://code.launchpad.net/~jarnos/linux-purge/+git/linux-purge
+    * # linux-purge -s
+    * # linux-purge
+    * # linux-purge -m
+  * https://www.pontikis.net/blog/remove-old-kernels-debian-ubuntu (deprecated)
+View installed packages:
+<code>
+# apt list --installed
+# dpkg --get-selections | grep -v deinstall |grep unifi
+</code>
+Remove installed package:
+<code>
+# dpkg -r package_name
+</code>
+----
+Ubuntu 18.04 LTS
+  * After initial login, change preferences in terminal and remove undesired favorites
+  * [[https://websiteforstudents.com/how-to-install-ubuntu-16-04-17-10-18-04-guest-machines-on-virtualbox/|VirtualBox installation notes]]
+  * Allow Virtualbox guest additions:
+<code>
+sudo apt update
+sudo apt install build-essential gcc make perl
+sudo apt install vim
+sudo apt install gnome-software
+sudo apt install openssh-server
+reboot
+</code>
+  * [[https://linuxconfig.org/how-to-install-mate-desktop-on-ubuntu-18-04-bionic-beaver-linux|Install MATE Desktop link #1]]
+  * [[https://www.hiroom2.com/2018/05/06/ubuntu-1804-mate-en/|Install MATE Desktop link #2]]
+  * [[Install UniFi on Ubuntu|Install UniFi on Ubuntu]]
+__12 Sep 2019__
+[[https://hostadvice.com/how-to/configure-apache-with-tls-ssl-certificate-on-ubuntu-18/|Configure Apache HTTPS on Ubuntu 18]]
+__26 Jan 2019__
+Logging into Desktop GUI only gives a blank screen:
+  * Tried updating VirtualBox Guest Additions to v5.2-5.2.24 but no change
+  * Tried updating packages using commands below
+Use these commands to update packages, as it allows interactive use to answer questions:
+<code>
+sudo apt update
+sudo apt upgrade
+sudo apt --with-new-pkgs upgrade
+</code>
+Very slow using Ubuntu GUI now:
+  * Enable 3D acceleration in VirtualBox settings
+  * Allocate 128MB video RAM
+  * Restart and test
+  * Also see these links:
+    * [[https://thomas.vanhoutte.be/miniblog/guide-speed-up-ubuntu-virtualbox/|Speeding up Ubuntu]]
+    * [[https://www.linuxbabe.com/virtualbox/speed-up-ubuntu-virtualbox]]
+Check that 3D acceleration is supported:
+  sudo apt install nux-tools
+  /usr/lib/nux/unity_support_test -p
+Installing mysql:
+<code>
+sudo apt install mysql-client-core-5.7
+sudo apt install mysql-server
+sudo /usr/bin/mysql_secure_installation
+</code>
+Then login like this:
+  sudo mysql -u root -p
+Login with a non-root user like this:
+  mysql -u username -p
+See notes at [[https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-18-04]] for setting up a new user
+Other SQL commands/testing:
+  CREATE USER 'username'@'localhost' IDENTIFIED BY 'password';
+  GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password';
+  CREATE DATABASE dbname;
+  SET PASSWORD FOR 'username'@'localhost' = PASSWORD('password');
+To fix this locale error upon login:
+<code>
+-bash: warning: setlocale: LC_ALL: cannot change locale (en_US)
+</code>
+run the following:
+  sudo locale-gen en_US
+  locale -a
+and confirm you see en_US now.  See [[https://ubuntuforums.org/showthread.php?t=1675347&page=2]] for more info.
+----
+Ubuntu 14.04.5 LTS Notes
+  * sudo apt-get install linux-headers-generic
+  * sudo apt-get install apache2
+  * sudo apt-get install mysql-server
+  * sudo apt-get install php5 libapache2-mod-php5
+  * sudo apt-get install gufw
+  * sudo apt-get install php5-mcrypt
+  * sudo apt-get install openssh-server openssh-client
+Edit php.ini to include the following line:
+  extension=mcrypt.so
+Restart apache:
+  sudo /etc/init.d/apache2 restart
+[[https://extr3metech.wordpress.com/2012/10/14/installing-ubuntu-12-04-lts-on-virtualbox-with-screenshots-for-beginners/|Installing Ubuntu 12.04 LTS on VirtualBox]]
+  * Choose download updates while installing
+  * Choose to install 3rd party software
+  * At first load, unlock unnecessary icons from launcher
+  * Use sudo -i instead of root
+Install VirtualBox Guest Additions
+  * sudo apt-get install linux-headers-generic
+    * //Still reports current running kernel headers not installed//
+  * Guest Additions installed okay
+Install MyUnity to tweak fonts
+  * https://apps.ubuntu.com/cat/applications/myunity/
+  * All 10 except for Monospace (11)
+  * Show some icons on desktop
+If you cannot manage Network connections (grayed out):
+  * Manage some network settings through the System Settings Menu
+  * Edit /etc/NetworkManager/NetworkManger.conf
+     * Change line to managed=true
+  * sudo service network-manager restart
+Install and configure vpnc packages
+  * In Ubuntu Software Center, choose All Software and search for network-manager-vpn
+  * You should see network-manager-vpnc-gnome and network-manager-vpnc; install both.
+    * If it can't find these packages, may need to check /etc/apt/sources.list
+      * Example line to add: deb http://ubuntu.cs.utah.edu/ubuntu precise main universe
+      * sudo apt-get update
+  * Now 3 vpn software packages should be installed:
+    * network-manager-vpnc
+    * network-manager-vpnc-gnome
+    * vpnc (seems to get installed from other 2)
+  * Add VPN connection
+  * In advanced options of VPN configuration, there is a setting called Transport and Security.  Set "NAT traversal" to Cisco UDP
+  * Also changed line in /etc/nsswitch.conf from "hosts: files mdns4_minimal [NOTFOUND=return] dns mdns 4 mdns" to "hosts: files dns".  Probably not needed; located from http://ubuntuforums.org/showthread.php?t=1842371
+  * Precise (12.04 release)
+      * Searched for "network-manager-vpnc" and installed
+      * It then installed these 3 packages
+        * http://packages.ubuntu.com/precise/network-manager-vpnc
+          * If necessary, save this file and install manually.  It installs other needed files.
+        * http://packages.ubuntu.com/precise/net/network-manager-vpnc-gnome
+        * http://packages.ubuntu.com/precise/vpnc
+    * Lucid (10.04 release)
+      * http://packages.ubuntu.com/lucid/net/network-manager-vpnc-gnome
+      * http://packages.ubuntu.com/lucid/vpnc
+      * http://packages.ubuntu.com/lucid/network-manager-vpnc
+[[http://askubuntu.com/questions/248/how-can-i-show-or-hide-boot-messages-when-ubuntu-starts|Show Boot Messages]]
+Install periodic updates:
+  * You may be able to right-click a little icon in the upper right hand corner of the screen that looks like a gear cog.  It should indicate status of pending updates.
+  * From the command line, use: ''sudo apt-get update''
+  * Then a little icon called "Update Manager" will appear in left sidebar
+  * Choose the files to update through that GUI
+Download and install a .deb package:
+  * Save the .deb file to some folder
+  * sudo apt install ./name.deb