Script for updating an Arch Linux system using reflector for mirror updates, yay as package manager and printing pacnew files.

update.sh

#!/bin/bash
#
# System update script for Arch Linux.
#
# Requires:
#  - yay as package manager.
#  - reflector as mirror list updater.
#
# Sergio Conde <skgsergio@gmail.com>
#

## Style vars
styleReset="\e[0m"
styleBold="\e[1m"
colorStatus="\e[32m"
colorCommand="\e[35m"
colorQuestion="\e[33m"
colorError="\e[31m"
colorReset="\e[39m"

## Functions
statusEcho() { echo -e "${styleBold}${colorStatus}[*] ${colorReset}$@${styleReset}"; }
commandEcho() { echo -e "${styleBold}${colorCommand}[>] ${colorReset}$@${styleReset}"; }
questionEcho() { echo -ne "${styleBold}${colorQuestion}[?] ${colorReset}$@${styleReset}"; }
errorEcho() { echo -e "${styleBold}${colorError}[!] ${colorReset}$@${styleReset}"; }

# doCmd defaultRunYesNo Command to execute
doCmd() {
    defaultRun=${1:0:1}; shift

    commandEcho "$@"

    questionEcho '\tRun it? '$([[ $defaultRun == 'y' ]] && echo '[Y/n]' || echo '[y/N]')' '

    read -r -n 1 -s response
    if [[ $response == '' ]]; then response=$defaultRun; fi
    echo $response

    if [[ ${response,,} == 'y' ]]; then
        $@
        exitCode=$?
        if [[ $exitCode -ne 0 ]]; then errorEcho "\"$@\" failed with code $exitCode"; fi
    fi

    echo

    [[ ${response,,} == 'y' ]]; return $?
}

## Update mirror list
statusEcho 'Updating mirror list'
doCmd n sudo reflector -l 10 -n 5 -p https --sort rate --save /etc/pacman.d/mirrorlist

if [[ $? -eq 0 ]]; then
    grep "^Server =" /etc/pacman.d/mirrorlist
    echo
fi

## Update repo packages (pacman)
statusEcho 'Updating packages'
doCmd y yay

## Search for new config files
statusEcho 'Searching for new config files'
newFiles=$(sudo find /etc -iname '*.pacnew' -or -iname '*.pacsave')
numFiles=$(echo $newFiles | wc -w)

if [ $numFiles -gt 0 ]; then
    commandEcho "There are $numFiles new configuration file(s):"

    for newFile in $newFiles; do
        commandEcho "\t$newFile"
    done
else
    commandEcho 'No new configuration files found'
fi