first-start.sh

#!/bin/bash

# Configure bash
cat > ${HOME}/.bash_aliases <<EOF
# Credit: https://gist.github.com/anonymous/a9055e30f97bd19645c2

## Modified commands
alias diff='colordiff'              # requires colordiff package
alias grep='grep --color=auto'
alias more='less'
alias df='df -h'
alias du='du -c -h'
alias mkdir='mkdir -p -v'
alias nano='nano -w'
alias ping='ping -c 5'
alias dmesg='dmesg -HL'

## New commands
alias da='date "+%A, %B %d, %Y [%T]"'
alias du1='du --max-depth=1'
alias hist='history | grep'         # requires an argument
alias openports='ss --all --numeric --processes --ipv4 --ipv6'
alias pgg='ps -Af | grep'           # requires an argument
alias ..='cd ..'

# Privileged access
if (( UID != 0 )); then
    alias sudo='sudo '
    alias scat='sudo cat'
    alias svim='sudoedit'
    alias root='sudo -i'
    alias reboot='sudo systemctl reboot'
    alias poweroff='sudo systemctl poweroff'
    alias update='sudo pacman -Su'
    alias netctl='sudo netctl'
fi

## ls
alias ls='ls -hF --color=auto'
alias lr='ls -R'                    # recursive ls
alias ll='ls -l'
alias la='ll -A'
alias lx='ll -BX'                   # sort by extension
alias lz='ll -rS'                   # sort by size
alias lt='ll -rt'                   # sort by date
alias lm='la | more'

## Safety features
alias cp='cp -i'
alias mv='mv -i'
alias rm='rm -I'                    # 'rm -i' prompts for every file
# safer alternative w/ timeout, not stored in history
alias rm=' timeout 3 rm -Iv --one-file-system'
alias ln='ln -i'
alias chown='chown --preserve-root'
alias chmod='chmod --preserve-root'
alias chgrp='chgrp --preserve-root'
alias cls=' echo -ne "\033c"'       # clear screen for real (it does not work in Terminology)

## Make Bash error tolerant
alias :q=' exit'
alias :Q=' exit'
alias :x=' exit'
alias cd..='cd ..'
EOF

cat > ${HOME}/.bash_sensible <<EOF
# Sensible Bash - An attempt at saner Bash defaults
# Maintainer: mrzool <http://mrzool.cc>
# Repository: https://github.com/mrzool/bash-sensible
# Version: 0.2.2

# Unique Bash version check
if ((BASH_VERSINFO[0] < 4))
then
  echo "sensible.bash: Looks like you're running an older version of Bash."
  echo "sensible.bash: You need at least bash-4.0 or some options will not work correctly."
  echo "sensible.bash: Keep your software up-to-date!"
fi

## GENERAL OPTIONS ##

# Prevent file overwrite on stdout redirection
# Use `>|` to force redirection to an existing file
set -o noclobber

# Update window size after every command
shopt -s checkwinsize

# Automatically trim long paths in the prompt (requires Bash 4.x)
PROMPT_DIRTRIM=2

# Enable history expansion with space
# E.g. typing !!<space> will replace the !! with your last command
bind Space:magic-space

# Turn on recursive globbing (enables ** to recurse all directories)
shopt -s globstar 2> /dev/null

## SMARTER TAB-COMPLETION (Readline bindings) ##

# Perform file completion in a case insensitive fashion
bind "set completion-ignore-case on"

# Treat hyphens and underscores as equivalent
bind "set completion-map-case on"

# Display matches for ambiguous patterns at first tab press
bind "set show-all-if-ambiguous on"

## SANE HISTORY DEFAULTS ##

# Append to the history file, don't overwrite it
shopt -s histappend

# Save multi-line commands as one command
shopt -s cmdhist

# Record each line as it gets issued
PROMPT_COMMAND='history -a'

# Huge history. Doesn't appear to slow things down, so why not?
HISTSIZE=500000
HISTFILESIZE=100000

# Avoid duplicate entries
HISTCONTROL="erasedups:ignoreboth"

# Don't record some commands
export HISTIGNORE="&:[ ]*:exit:ls:bg:fg:history:clear"

# Use standard ISO 8601 timestamp
# %F equivalent to %Y-%m-%d
# %T equivalent to %H:%M:%S (24-hours format)
HISTTIMEFORMAT='%F %T '

# Enable incremental history search with up/down arrows (also Readline goodness)
# Learn more about this here: http://codeinthehole.com/writing/the-most-important-command-line-tip-incremental-history-searching-with-inputrc/
bind '"\e[A": history-search-backward'
bind '"\e[B": history-search-forward'
bind '"\e[C": forward-char'
bind '"\e[D": backward-char'

## BETTER DIRECTORY NAVIGATION ##

# Prepend cd to directory names automatically
shopt -s autocd 2> /dev/null
# Correct spelling errors during tab-completion
shopt -s dirspell 2> /dev/null
# Correct spelling errors in arguments supplied to cd
shopt -s cdspell 2> /dev/null

# This defines where cd looks for targets
# Add the directories you want to have fast access to, separated by colon
# Ex: CDPATH=".:~:~/projects" will look for targets in the current working directory, in home and in the ~/projects folder
CDPATH="."

# This allows you to bookmark your favorite places across the file system
# Define a variable containing a path and you will be able to cd into it regardless of the directory you're in
shopt -s cdable_vars

# Examples:
# export dotfiles="$HOME/dotfiles"
# export projects="$HOME/projects"
# export documents="$HOME/Documents"
# export dropbox="$HOME/Dropbox"
EOF

cat >> ${HOME}/.bashrc <<EOF

if [ -f ~/.bash_sensible ]; then
   source ~/.bash_sensible
fi

if [ -f ~/.bash_aliases ]; then
   source ~/.bash_aliases
fi
EOF

# Create chromium flags file
cat > ${HOME}/.config/chromium-flags.conf <<EOF
--start-maximized
EOF

# Enable sending hostname via DHCP
sudo sh -c 'echo "send host-name = pick-first-value(gethostname(), "ISC-dhclient");" > /etc/dhclient.conf'
sudo sh -c 'echo "send fqdn.fqdn = pick-first-value(gethostname(), "ISC-dhclient");" > /etc/dhclient6.conf'

# Enable nice font rendering
sudo ln -s /etc/fonts/conf.avail/70-no-bitmaps.conf /etc/fonts/conf.d
sudo ln -s /etc/fonts/conf.avail/10-sub-pixel-rgb.conf /etc/fonts/conf.d
sudo ln -s /etc/fonts/conf.avail/11-lcdfilter-default.conf /etc/fonts/conf.d

cat > ${HOME}/.Xresources <<EOF
Xft.autohint: 0
Xft.lcdfilter: lcddefault
Xft.hintstyle: hintslight
Xft.hinting: 1
Xft.antialias: 1
Xft.rgba: rgb
EOF

# Development tools
sudo pacman -Sy --quiet --noconfirm git jdk8-openjdk openjdk8-doc openjdk8-src maven jdk11-openjdk openjdk11-doc openjdk11-src code tmux
sudo pacman -Sy --quiet --noconfirm eclipse-java intellij-idea-community-edition

# Office tools
sudo pacman -Sy --quiet --noconfirm thunderbird thunderbird-i18n-de thunderbird-i18n-en-us gimp keepassxc
sudo pacman -Sy --quiet --noconfirm firefox firefox-i18n-en-us firefox-i18n-de chromium
sudo pacman -Sy --quiet --noconfirm hunspell hunspell-de hunspell-en_US