Initial release.

LICENSE

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+MIT License
+
+Copyright (c) 2021 Kamil D.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+ArchEtcUpdate
+===================
+A simple tool for management `*.pacsave` and `*.pacnew` files for Arch-like systems.\
+It's build in bash in order to keep required dependencies at minimum level.
+
+# Configuration
+Please see `config.sh`. You will need to set up your diff tool.
+
+# Usage
+Just run the script:
+```bash
+./run.sh
+```

config.sh

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+#!/usr/bin/env bash
+# @K.Dziuba
+# Etc Update for Arch-like systems - Config File
+
+
+# ===========================
+#  General settings
+# ===========================
+
+# Please choose your favourite diff-tool. 
+# Examples: vimdiff, meld, kompare, kdiff3.
+# ( This is the application that is going to be used to compare and manage changes in files ).
+diffToolApp='meld'
+
+
+# ===================================
+#  Auth settings
+# ===================================
+# enable root authentication types
+# -----------------------------------
+
+# enable for sudo authentication (recommended)
+authWithSudo='yes'
+
+# enable for polkit/pkexec authentication (GUI only)
+# authWithPkexec='yes'
+
+# enable for zensu authentication
+# authWithZensu='yes'
+
+# enable for gksu authentication
+# authWithGksu='yes'

run.sh

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+#!/usr/bin/env bash
+# @K.Dziuba
+# Etc-update script for Arch-based Linux distributions. 
+# It allows to find and manage pacsave and pacnew files easily. 
+
+# ==============
+# Paths config
+# ==============
+SCRIPT_ROOT=$( readlink -f $( dirname "${BASH_SOURCE[0]}" ) )
+cd "$SCRIPT_ROOT"
+
+# ==============
+# Sources
+# ==============
+source config.sh
+source src/EtcUpdate.sh
+
+# ==================
+# Invoke the script
+# ==================
+autoSetAuthPrefix
+set -eu
+main

src/Common/CommonOps.sh

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+#!/usr/bin/env bash
+# Functions for common use - General Operations
+
+# Check last operation result. 
+# Exit on failure
+checkLastOp() {
+    if [[ $? != 0 ]]; then
+        printError " ... FAILED!"
+        exit 1
+    else
+        printSuccess " ... OK"
+    fi
+}
+
+# Ask whether shall we continue
+askContinue() {
+    printText "\nContinue? [Y/n] "
+    read ans
+    if [[ $ans != 'Y' ]]; then
+        printNotice "Aborted by user"
+        exit 0
+    fi
+}

src/EtcUpdate.sh

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+#!/usr/bin/env bash
+# @K.Dziuba
+# Etc Update for Arch-like systems
+
+# source files
+for file in `find ./src/*/* -name '*.sh' `; do
+    source $file
+done
+
+# main function
+main() {
+    init
+    initDiffTool
+
+    printNotice "--- Processing pacsave files ---"
+    for file in `$authPrefix find /etc -name '*.pacsave'`; do
+        if [[ -f ${file::-8} ]]; then
+            # original file exists -> let's see the difference
+            processEtcFile $file ${file::-8}
+        else
+            # original file do not exist -> let's ask for removal
+            printWarning "Unused pacsave found: \n${file}."
+            askForFileRemoval ${file}
+        fi
+    done
+
+    printNotice "--- Processing pacnew files ---"
+    for file in `$authPrefix find /etc -name '*.pacnew'`; do
+        processEtcFile $file ${file::-7}
+    done
+
+    # all done
+    printSuccess "" "Done!"
+}
+
+# Process single file from etc. Run diff-tool app, then ask for removal.
+# $1 - a new file that came to /etc (".pacsave" or ".pacnew" file)
+# $2 - a current file (a file that is currently in-use and should be updated)
+processEtcFile() {
+    if [[ -z $1 || ! -f $1 ]]; then
+        printError "Fle A -> Not a file! Got: $1"
+        exit 2
+    fi
+
+    if [[ -z $2 || ! -f $2 ]]; then
+        printError "File B -> Not a file! Got: $2"
+        exit 2
+    fi
+
+    # get params
+    newFile=$1
+    inUseFile=$2
+
+    # update
+    printText "Comparing: "
+    printText "> A: $newFile"
+    printText "> B: $inUseFile"
+    $authPrefix $diffToolApp "$newFile" "$inUseFile"
+    checkLastOp
+
+    # ask for removal
+    askForFileRemoval ${newFile}
+}
+
+# Ask for removal permission. If user approves it -> then (and only then!) remove the file.
+# $1 - A file to remove
+askForFileRemoval() {
+    printText "Remove the file: ${1}? [y/N] "
+    read ans
+    if [[ $ans == 'y' ]]; then
+        printNotice "Removing: ${1}"
+        $authPrefix rm ${1}
+    fi
+}
+
+# check and init diff-tool application
+initDiffTool() {
+    printText "Using '${diffToolApp}' as diff-tool..."
+
+    if  [[ ! -z ${diffToolApp} ]] && which ${diffToolApp} | read; then
+        diffToolApp=$(which ${diffToolApp})
+        printText ""
+    else
+        printError "... '${diffToolApp}' not found!"
+        exit 127
+    fi    
+}
+
+# pre-run function
+init() {
+    printInfo "[$0] Starting up ..."
+
+    # set up traps
+    trap terminate SIGINT SIGTERM ERR 0
+}
+
+# post-run / terminate function
+terminate() {
+    printInfo "[$0] Terminating ..."
+    # ( possible post-run actions )
+    exit
+}

src/IO/Print.sh

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+#!/usr/bin/env bash
+# @K.Dziuba
+# Message/Print functions
+
+# Define colors (ANSI)
+C_RED='\033[0;31m'
+C_GREEN='\033[0;32m'
+C_BLUE='\033[0;34m'
+C_YELLOW='\033[1;33m'
+C_PURPLE='\033[0;35m'
+C_CYAN='\033[0;36m'
+C_NC='\033[0m' # no-color
+
+# Print error message
+# $1, $2, ... - message text 
+printError() {
+    row=1
+    while (( "$#" )); do
+        if [[ row -eq '1' ]]; then
+            >&2 echo -e "${C_RED} [ERROR] $1${C_NC}"
+        else
+            >&2 echo -e "${C_RED}         $1${C_NC}"
+        fi
+        shift
+        ((row++))
+    done
+}
+
+# Print warning message
+# $1, $2, ... - message text 
+printWarning() {
+    row=1
+    while (( "$#" )); do
+        if [[ row -eq '1' ]]; then
+            >&2 echo -e "${C_YELLOW} [WARNING] $1${C_NC}"
+        else
+            >&2 echo -e "${C_YELLOW}           $1${C_NC}"
+        fi
+        shift
+        ((row++))
+    done
+}
+
+# Print success message
+# $1, $2, ... - message text 
+printSuccess() {
+    while (( "$#" )); do
+        echo -e " ${C_GREEN}$1${C_NC}"
+        shift
+    done
+}
+
+# Print notice message
+# $1, $2, ... - message text 
+printNotice() {
+    while (( "$#" )); do
+        echo -e " ${C_PURPLE}$1${C_NC}"
+        shift
+    done
+}
+
+# Print info message
+# $1, $2, ... - message text 
+printInfo() {
+    while (( "$#" )); do
+        echo -e " ${C_CYAN}$1${C_NC}"
+        shift
+    done
+}
+
+# Print plain text message
+# $1, $2, ... - message text 
+printText() {
+    while (( "$#" )); do
+        echo -e " $1"
+        shift
+    done
+}

src/System/Auth.sh

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+#!/usr/bin/env bash
+# @K.Dziuba
+# System/Auth functions
+
+# sets the $authPrefix, if given binary exists
+# $1 - binary file
+setAuthPrefix() {
+    if which "$1" | read; then
+        authPrefix="$1"
+    else
+        printWarning "$1 not found! Skipping..."
+    fi
+}
+
+# uses setAuthPrefix() to auto-set the $authPrefix defined in the config
+autoSetAuthPrefix() {
+    authPrefix=''
+
+    # Sudo support
+    if [[ $authWithSudo == 'yes' ]]; then
+        setAuthPrefix sudo
+    fi
+
+    # Zensu support
+    if [[ $authWithZensu == 'yes' ]]; then
+        setAuthPrefix zensu
+    fi
+
+    # Gksu support
+    if [[ $authWithGksu == 'yes' ]]; then
+        setAuthPrefix gksu
+    fi
+
+    # Polkit/pkexec support
+    if [[ $authWithPkexec == 'yes' ]]; then
+        setAuthPrefix pkexec
+    fi
+}