Ubuntu

About Ubuntu

AAA

Ubuntu version

lsb_release -a
uname -a

Install instructions

• install missing packages

sudo apt-get install ssh
sudo apt-get install git subversion g++
sudo apt-get install libz-dev sqlite sqlite3 libsqlite3-dev sqliteman libmysqlclient-dev unixodbc-dev
sudo apt-get install libssl-dev
sudo apt-get install smartmontools
sudo apt-get install emacs xemacs21
sudo apt-get install mutt
sudo apt-get install liblz4-tool pbzip2
sudo apt get libc6-dev-i386 # otherwise no /usr/include/sys/types.h
sudo apt-get install sysstat
libreadline-dev

• install ROOT

Please install ROOT per instructions at http://root.cern.ch. The ROOT package available from Ubuntu repositories is severely out of date and cannot be used with MIDAS and ROOTANA.

### DO NOT DO THIS! apt-get install root-system

• setup time synchronization

apt-get install chrony
add time1, time2, time3 to the time servers, comment out ntp pool servers in /etc/chrony/chrony.conf
killall chronyd
chronyd
chronyc sources
chronyc tracking

• setup email

apt-get install postfix ### select "satellite system", enter full hostname "xxx.triumf.ca", enter "smtp.triumf.ca"
echo olchansk@triumf.ca >> ~/.forward
mailx root
test
^D

• install Konstantin's scripts

mkdir ~root/git
cd ~root/git
git clone http://ladd00.triumf.ca/~olchansk/git/scripts.git
cd scripts
git pull

• enable root login from ladd00

ssh localhost
CTRL-C
/bin/cp ./git/scripts/etc/authorized_keys .ssh/

• enable automatic updates 1

sudo apt-get install unattended-upgrades
edit /etc/apt/apt.conf.d/50unattended-upgrades ### uncomment "-updates", uncomment "::Mail "root"", uncomment allowed-origins -security and -updates

• enable automatic updates 2

add this to /etc/apt/apt.conf.d/10periodic

APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::AutocleanInterval "7";
APT::Periodic::Unattended-Upgrade "1";

NIS instructions

• sudo apt-get install portmap nis ### will ask for NIS domain (LADD-NIS)
• ypwhich -m
• sudo apt-get install autofs
• sudo vi /etc/nsswitch.conf ### add the automount line, modify the passwd, group and shadow lines to read this:

passwd: files nis
group: files nis
shadow: files nis
automount:  files nis

• sudo vi /etc/idmapd.conf ### add line: "Domain = triumf.ca"
• vi /etc/lightdm/lightdm.conf ### add line: greeter-show-manual-login=true
• reboot

Install sddm display manager

• apt-get install sddm
• apt-get install sddm-theme-"*"
• create sddm.conf:

root@daqubuntu:~# more /etc/sddm.conf
[Theme]
Current=maldives
root@daqubuntu:~# 

• dpkg-reconfigure lightdm (select sddm)
• reboot

Update packages

• apt-get update # update package list
• apt-get dist-upgrade # install updated packages and update "kept back" packages
• apt-get autoremove # remove packages that apt thinks should be removed

Update to new version of Ubuntu

vi /etc/update-manager/release-upgrades # set "Prompt=normal"
do-release-upgrade

Ubuntu package manager

• apt-get install xxx # install package xxx
• apt-get update
• apt-get upgrade
• apt-get dist-upgrade
• apt-get autoremove # remove automatically installed packages required by a removed package
• apt-get remove xxx # remove package xxx
• apt-cache search . # list all available packages
• apt-cache show "." | grep ^Package # list al available packages
• apt-cache madison root-system # show all available versions of package root-system
• apt list # list all installed packages