migrate_generic

#!/bin/bash
clear
grep "Antergos" /etc/*-release > /dev/null 2>&1
if [ $? -eq 1 ]; then echo "A script designed for Antergos Linux! BYE!"; exit 1; fi
#sorry for my english ;)
echo -e "\033[1m
SCRIPT DOESN'T GUARANTEE CORRECT WORKING OF THE SYSTEM AFTER MIGRATION FROM ANTERGOS TO ARCH LINUX!!\n
FOR USE ON YOUR OWN RESPONSIBILITY. THE SCRIPT MAKES A BASIC COPY OF MODIFIED FILES.\n
HOWEVER, TO RESTORE THEM, YOU NEED TO DO IT MANUAL. THE BEST TO MAKE A FULL COPY OF THE SYSTEM.\033[0m \n[ To abort, press Ctrl+C, ENTER - to continue ]"
read n

echo -e "\033[1mList of files to be modified:\033[0m \n"
echo -e "-> /etc/pacman.conf
-> /etc/os-release
-> /etc/issue
-> /boot/grub/grub.cfg
-> /etc/grub.d/10_antergos <-- It will be REMOVED! \n\n"

echo -e "\033[1mList of Antergos packages to be removed (list without dependencies,\norphaned dependencies will also be removed):\033[0m \n"
pacman -Qq | grep antergos || echo "Nothing here! (removed earlier?)"
echo -e "\n\n"


read -n 1 -p "Back up files that will be modified? (y/n)? " odp
case $odp in
    [yY])
            sudo cp -v /etc/pacman.conf /etc/pacman.conf.ANTERGOS
            sudo cp -v /etc/os-release /etc/os-release.ANTERGOS
            sudo cp -v /etc/issue /etc/issue.ANTERGOS
            sudo cp -v /boot/grub/grub.cfg /boot/grub/grub.cfg.ANTERGOS
            sudo cp -v /etc/grub.d/10_antergos /etc/grub.d/_10_antergos.ANTERGOS
            sudo chmod -x /etc/grub.d/_10_antergos.ANTERGOS
            sudo pacman -Qq | grep antergos > ~/antergos_pkglist_$$.txt && echo "A list of specific Antergos packages have been saved to a file ~/antergos_pkglist.txt"
            echo -e "\nA copy of the files to be modified has been created,\nyou will find them with the extension '.ANTERGOS'!"
            ;;
    [nN])
            echo -e "\nNo backup selected!!"
            ;;
    *)
            echo -e "\nPlease select \"y\" or \"n\" (yes/no)!"
            exit 1
            ;;
esac


tmpfile=`mktemp` || exit 1


echo -e "-> \033[1mRemoving Antergos-specific packages and dependencies\033[0m\n"
sudo pacman -Rddnus --noconfirm $(pacman -Qq | grep antergos)

echo -e "-> \033[1mRemoving GRUB Antergos modifications /etc/grub.d/10_antergos\033[0m\n"
sudo rm -v /etc/grub.d/10_antergos

echo -e  "-> \033[1mReplacing the content /etc/pacman.conf\033[0m\n"
cat > $tmpfile << "EOF"
#
# /etc/pacman.conf
#
# See the pacman.conf(5) manpage for option and repository directives

#
# GENERAL OPTIONS
#
[options]
# The following paths are commented out with their default values listed.
# If you wish to use different paths, uncomment and update the paths.
#RootDir     = /
#DBPath      = /var/lib/pacman/
#CacheDir    = /var/cache/pacman/pkg/
#LogFile     = /var/log/pacman.log
#GPGDir      = /etc/pacman.d/gnupg/
#HookDir     = /etc/pacman.d/hooks/
HoldPkg     = pacman glibc
#XferCommand = /usr/bin/curl -C - -f %u > %o
#XferCommand = /usr/bin/wget --passive-ftp -c -O %o %u
#CleanMethod = KeepInstalled
#UseDelta    = 0.7
Architecture = auto

# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
#IgnorePkg   =
#IgnoreGroup =

#NoUpgrade   =
#NoExtract   =

# Misc options
#UseSyslog
Color
TotalDownload
CheckSpace
#VerbosePkgLists
ILoveCandy

# By default, pacman accepts packages signed by keys that its local keyring
# trusts (see pacman-key and its man page), as well as unsigned packages.
SigLevel    = Required DatabaseOptional
LocalFileSigLevel = Optional
#RemoteFileSigLevel = Required

# NOTE: You must run `pacman-key --init` before first using pacman; the local
# keyring can then be populated with the keys of all official Arch Linux
# packagers with `pacman-key --populate archlinux`.

#
# REPOSITORIES
#   - can be defined here or included from another file
#   - pacman will search repositories in the order defined here
#   - local/custom mirrors can be added here or in separate files
#   - repositories listed first will take precedence when packages
#     have identical names, regardless of version number
#   - URLs will have $repo replaced by the name of the current repo
#   - URLs will have $arch replaced by the name of the architecture
#
# Repository entries are of the format:
#       [repo-name]
#       Server = ServerName
#       Include = IncludePath
#
# The header [repo-name] is crucial - it must be present and
# uncommented to enable the repo.
#

# The testing repositories are disabled by default. To enable, uncomment the
# repo name header and Include lines. You can add preferred servers immediately
# after the header, and they will be used before the default mirrors.

#[testing]
#Include = /etc/pacman.d/mirrorlist

[core]
Include = /etc/pacman.d/mirrorlist

[extra]
Include = /etc/pacman.d/mirrorlist

#[community-testing]
#Include = /etc/pacman.d/mirrorlist

[community]
Include = /etc/pacman.d/mirrorlist

# If you want to run 32 bit applications on your x86_64 system,
# enable the multilib repositories as required here.

#[multilib-testing]
#Include = /etc/pacman.d/mirrorlist

[multilib]
Include = /etc/pacman.d/mirrorlist

# An example of a custom package repository.  See the pacman manpage for
# tips on creating your own repositories.
#[custom]
#SigLevel = Optional TrustAll
#Server = file:///home/custompkgs
EOF
sudo mv -v $tmpfile /etc/pacman.conf

echo -e  "-> \033[1mReplacing the content /etc/os-release\033[0m\n"
cat > $tmpfile << "EOF"
NAME="Arch Linux"
PRETTY_NAME="Arch Linux"
ID=arch
BUILD_ID=rolling
ANSI_COLOR="0;36"
HOME_URL="https://www.archlinux.org/"
DOCUMENTATION_URL="https://wiki.archlinux.org/"
SUPPORT_URL="https://bbs.archlinux.org/"
BUG_REPORT_URL="https://bugs.archlinux.org/"
LOGO=archlinux
EOF
sudo mv -v $tmpfile /etc/os-release


echo -e  "-> \033[1mReplacing the content /etc/issue\033[0m\n"
cat > $tmpfile << "EOF"
Arch Linux \r (\l)

EOF
sudo mv -v $tmpfile /etc/issue


echo -e  "-> \033[1mPamac removal\033[0m\n"
kill -s SIGKILL $(pgrep pamac)
sudo pacman --noconfirm --remove -nus pamac


echo -e  "-> \033[1mUpdating Pacman keys and repository databases - Please be patient\033[0m\n"
sudo pacman-key --refresh
sudo pacman -Syy

echo -e  "-> \033[1mReinstall linux and linux-headers\033[0m\n"
sudo pacman -Syu --noconfirm linux linux-headers


echo -e  "-> \033[1mReinstall GRUB and refresh entries in grub.cfg\033[0m\n"
sudo pacman -Syu --noconfirm grub
sudo grub-mkconfig -o /boot/grub/grub.cfg


echo -e  "-> \033[1mFull system update\033[0m\n"
sudo sudo pacman -Syyuu --noconfirm