Sagar Nikam

Things to do after fresh Ubuntu installation

20 August 2021

After installing a fresh LTS version of Ubuntu, you need to do a minimum installation of softwares for development or for entertainment purpose. Here is a list for the same

  • remove snapstore & make default ubuntu software store

    # check for installed snap packages
snap list
# remove snap packages
sudo snap remove --purge <package-name>
# remove snap cache
sudo rm -rf /var/cache/snapd/
# uninstall snap and snap GUI tool
sudo apt autoremove --purge snapd gnome-software-plugin-snap
# clear snap preferences
sudo rm -fr ~/snap

  • install media codecs, vlc, FFmpeg

    sudo apt install ubuntu-restricted-extras
sudo apt-get update
sudo apt-get install vlc
sudo apt-get install ffmpeg

  • remove mail client

    sudo apt-get purge thunderbird*

  • install package updates

    sudo apt-get update && sudo apt-get dist-upgrade

  • download from sites

  • install & configure (export path variables to .bashrc)

    • Java

      sudo mkdir /usr/lib/jvm/
sudo tar -xvzf jdk-11.0.12_linux-x64_bin.tar.gz -C /usr/lib/jvm/
# path
export JAVA_HOME=/usr/lib/jvm/jdk-11.0.12
export PATH=$PATH:$JAVA_HOME/bin

    • Gradle

      sudo mkdir /opt/gradle
sudo unzip -d /opt/gradle gradle-7.2-bin.zip
# path
export PATH=$PATH:/opt/gradle/gradle-7.2/bin

    • Go

      sudo tar -xvzf go1.16.4.linux-amd64.tar.gz -C /usr/local/
# path
export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin

    • Maven

      sudo tar -xvzf apache-maven-3.8.2-bin.tar.gz -C /opt/
# path
export M2_HOME=/opt/apache-maven-3.8.2
export PATH=$PATH:$M2_HOME/bin

  • install additional archieve utilities

    sudo apt install rar unrar p7zip-full p7zip-rar

  • install & configure open-ssh

    sudo apt-get install openssh-client
sudo apt-get install openssh-server
# generate ssh keys
ssh-keygen
# enable SSH access to local machine
cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys

  • R install

    sudo apt install r-base-core libcurl4-openssl-dev libssl-dev libxml2-dev
sudo apt install libmariadbclient-dev # for RMySQL
R
install.packages("devtools")
install.packages("rmarkdown")
install.packages("RMySQL")

  • UNIX ulimit Settings

    • “ulimits” prevent single users from using too many system resources such as threads, files, and network connections on a per-process and per-user basis

    • # check
ulimit -a
# check limit for max number of open file descriptors
ulimit -Sn	# soft limit
ulimit -Hn  # hard limi
# increase Limit for Current Session
ulimit -n 200000
# permanently edit value for (nofile - max number of open file descriptors)
sudo gedit /etc/security/limits.conf
#* 	 soft     nofile         1024
#* 	 hard     nofile         200000

  • configure git

      git config --global user.email <you@example.com>
  git config --global user.name <Your Name>

      git config --global credential.credentialStore plaintext
  git config --global credential.plaintextStorePath </pathToPAT/pat/credentials>
  # install
  sudo dpkg -i <path-to-package.deb>
  git-credential-manager-core configure

  • check which Init system using

      ps --no-headers -o comm 1
  # systemd (which uses the systemctl command)
  # System V init (which uses the service command)

  • install gnome tweaks

    sudo apt install gnome-tweaks

  • install Markdown (Typora)

    wget -qO - https://typora.io/linux/public-key.asc | sudo apt-key add -
# add Typora's repository
sudo add-apt-repository 'deb https://typora.io/linux ./'
sudo apt-get update
# install typora
sudo apt-get install typora

  • other things to do

    • enable Night Light mode (Settings - > Display -> Night Light tab)
    • select default apps (Settings -> Default Applications)
    • connect to online account (Ubuntu one, Settings -> Online Accounts)
    • add your favorite apps to the dock