horst3180_arc-theme/arc-theme-upgrade

#!/bin/bash

# Script to upgrade/install the arc-theme

#URL
theme_name=Arc-theme

# Theme name
download_url=https://github.com/horst3180/$theme_name/archive/master.tar.gz

# Tempdir
tempdir=/tmp/$theme_name

# Directories
lightdir=/usr/share/themes/Arc
darkerdir=/usr/share/themes/Arc-Darker
darkdir=/usr/share/themes/Arc-Dark

userlightdir=$HOME/.themes/Arc
userdarkerdir=$HOME/.themes/Arc-Darker
userdarkdir=$HOME/.themes/Arc-Dark

userlightdir2=$HOME/local/share/themes/Arc
userdarkerdir2=$HOME/local/share/themes/Arc-Darker
userdarkdir2=$HOME/local/share/themes/Arc-Dark

#Functions
show_error() {
echo -e "\033[1;31m$@\033[0m"
}

check_root() {
  if [[ "${EUID}" -ne 0 ]]; then
    show_error "This script has to be run as root"
    exit 1;
  fi
}

check_command() {
  fail=false

  for i in "$@"
  do
    command -v $i >/dev/null 2>&1 || { show_error >&2 "This script requires "$i" but it's not installed."; fail=true; }
  done

  if [ "$fail" = true ]; then
    echo
    echo "Aborting."
    echo
    exit 1;
  fi
}

check_directories() {
  dirfound=false

  echo "Checking if theme is installed..."
  echo

  for i in "$@"
  do
    if [ -d "$i" ]; then
      echo "Found $i"
      dirfound=true
    fi
  done

  if [ "$dirfound" = true ]; then
    echo
    echo "The above directories will be overwritten."
  fi

  if [ "$dirfound" = false ]; then
    echo "Theme is not installed."
  fi
}

install_theme() {
  # Remove current installation
  rm -rf $lightdir $darkerdir $darkdir

  # Clean tempdir
  rm -rf $tempdir && mkdir $tempdir && cd $tempdir

  # Get the sources
  wget $download_url
  tar xf master.tar.gz && cd "$theme_name"-master

  # Build and install
  ./autogen.sh --prefix=/usr
  make install

  # Remove the sources
  rm -rf $tempdir

  echo
  echo "Installation complete."
}

# Main part
clear
echo '####################################'
echo '#     Arc Theme Install Script     #'
echo '####################################'
echo

#Check available commands
check_command automake wget pkg-config autoconf make tar

#Check if we are root
check_root

#Check if theme is installed
check_directories $lightdir $darkerdir $darkdir

echo
read -r -p "Do you want to continue installation? [y/N] " response
case $response in
  [yY][eE][sS]|[yY]) 
    install_theme
    ;;
  *)
    echo "Aborted by user"
    exit 0;
    ;;
esac