Purge Bash Script

#!/bin/bash
# Author: 	Nyle Davis			Created 21-10-05
# Purpose:	1.) Backup all MySQL DBs/Tables, 2.) Purge LAMP Stack,
#				3.) Re-Install LAMP Stack & PostGres, 4.) Re-install Data.
# File:		lamp-replace.sh
# Source:	The source of this code is from other working backup scripts
#				and from the online source at:
#					codegrepper.com/code-examples/shell/how+to+uninstall+lamp+
#					server+in+ubuntu+18.04
# Tester:	The source of this code is tested with:
#					shellcheck.net
# Run with command
# 		CMD: bash ../Scripts/MySQL/lamp-replace.sh
# Script is CRON capable

# Declare the functions:
	function mysql_bup () {
		# Backup MySQL
		# May have to additionally manually backup the phpmyadmin option DB as that
		# MySQL management DB sometime does not work/backup correctly.
		# This may require using PHPmyAdmin or MySQL Work Bench.
		echo "Backing up the DBs!";
		bkpath='/3T/backups/LAMP/';								# Declare the backup path
		dbuser=$USER;													# Get the System user
		dbpass='nomened.1497';										# Get the DB password
		dbpath='/usr/bin';											# Declare the system path
		dbopts='--all-databases --events -A -C -f';
		mybupd="${bkpath}MySQL/";									# Declare MySQL backup path
		flname="mysql_dump_(`eval date +%Y-%m-%d`).tgz";	# Declare the backup file
		fullnm="${mybupd}${flname}";								# Declare full backup file
		echo "F=> ${fullnm}";
		mkdir -p ${bkpath};											# Create the backup path
		ls -al ${bkpath};												# Show the backup path
		if [[ -f $fullnm ]]; then									# Remove old backup file(s)
			rm -f ${fullnm};
		else																# Create the new backup file
			curdir=$(pwd);												# Could not make this work outside
			cd ${bkpath};												# out of the if/else logic because
			touch ${flname};											# it has to be in the target dir.
			GZIP=$(which gzip);										# Set GZIP and run backup
			${dbpath}/mysqldump -u ${dbuser} -p${dbpass} ${dbopts} | $GZIP -9 > ${flname};
			cd ${curdir};
		fi
	}	# end function nysql_bup

	function confg_bup () {
		# Backup the config files
		echo "Backing up the CONFIG file!";
		bkcpth='/3T/backups/LAMP/Config/';						# Declare the def backup path
		apapth='/3T/backups/LAMP/Config/apache2';				# Declare apache2 backup path
		phppth='/3T/backups/LAMP/Config/php';					# Declare PHP backup path
		pmapth='/3T/backups/LAMP/Config/phpmyadmin';			# Declare PHPmyAdmin path
		myspth='/3T/backups/LAMP/Config/mysql';				# Declare mysql backup path
		pgapth='/3T/backups/LAMP/Config/postgres';			# Declare PostGres backup path
		mkdir -p ${bkcpth};											# Create the def backup path
		mkdir -p ${apapth};											# Create apache backup path
		mkdir -p ${phppth};											# Create php backup path
		mkdir -p ${pmapth};											# Create pma backup path
		mkdir -p ${myspth};											# Create mysql backup path
		mkdir -p ${pgapth};											# Create PostGres backup path
		cp '/etc/fstab' 	"${bkcpth}fstab";						# Copy FSTAB for drive defs
		cp -rf "/etc/apache2/" "${apapth}";						# Copy the Apache Configs
		cp -rf "/etc/php/" "${phppth}";							# Copy the PHP Configs
		cp -rf "/etc/phpmyadmin/" "${pmapth}";					# Copy the PHPmyADMIN Configs
		cp -rf "/etc/mysql/" "${myspth}";						# Copy the MySQL Configs
		cp -rf "/etc/mysql/" "${pgapth}";						# Copy the PostGres Configs
		# Pipe the "Show" result to a file and show with NANO
		resfil='/3T/Syncs/Files/configs_dump.txt'
		ls -al ${bkcpth} > ${resfil};								# Save the Def Configs
		ls -al ${apapth} >> ${resfil};							# Save the Apache Configs
		ls -al ${phppth} >> ${resfil};							# Save the PHP Configs
		ls -al ${pmapth} >> ${resfil};							# Save the PHPmyAdmin Configs
		ls -al ${myspth} >> ${resfil};							# Save the MySQL Configs
		ls -al ${pgapth} >> ${resfil};							# Save the PostGres Configs
		nano ${resfil};												# Show the Resilts File
	}	# end function confg_bup

	function prgap_prg () {
		# Remove Apache
		echo "Purging Apache2!";
		# service apache2 stop;
		# or
		pkill apache2;
		apt-get purge apache2 apache2-utils apache2.2-bin apache2-common
		apt remove apache2.*
		apt-get autoremove
		whereis apache2
		rm -rf /etc/apache2
	}	# end function prgap_prg

	function prgph_prg () {
		# Remove PHP
		echo "Purging PHP!";
		apt-get purge `dpkg -l | grep php7.2 | awk '{print $2}' | tr "\n" " "`
		apt-get purge php7.*
		apt-get autoremove --purge
		whereis php
		rm -rf /etc/php
	}	# end function prgph_prg

	function prgdb_prg () {
		# Remove MYSql
		echo "Purging MYSql!";
		# service mysql stop;
		# or
		pkill mysql;
		apt-get remove --purge *mysql\*
		apt-get remove --purge mysql-server mysql-client mysql-common -y
		#rm -rf /etc/mysql
		apt-get autoremove && apt-get autoclean
	}	# end function prgdb_prg

	function prgpg_prg () {
		# Remove PostGres
		echo "Purging PostGres!";
		# service postgres stop;
		# or
		pkill postgres;
		apt-get --purge remove postgresql
		apt-get purge postgresql*
		apt-get --purge remove postgresql postgresql-doc postgresql-common
		# The following lines should be a "do while" loop
		# while pkg in ??
		#    apt-get --purge remove ${pkg}
		# > dpkg -l | grep postgres
		# Get the right var above before inacting the remain commands
		# rm -rf /var/lib/postgresql/
		# rm -rf /var/log/postgresql/
		# rm -rf /etc/postgresql/
		# apt-get autoremove && apt-get autoclean
	}	# end function prgpg_prg

	function ilamp_ins () {
		# Install LAMP
		echo "Re-Installing LAMP!";
		# There are conflicts in the "apt-get install" command line, which must
		# be resolved before inacting it. Notice it is covering: 1.) CURL,
		# 2.) MariaDB, 2.) MS-SQL, 4.) MongoDB, 5.) MySQL, 6.) MySQL Workbench,
		# 7.) PHP, 8) PHPmyAmin, 8.) PostGres, 10.) PGAdmin, 11.) SQLite,
		# 12.) Sybase.
		# These should be broken out and addressed individually.  Probably as
		# individual functions.
		# Any conflicts between the "tasksel" and the "apt-get install" must be
		# found and corrected before execution.
		tasksel install lamp-server;
		mysql_upgrade;
		apt-get install -y mssql-server apache2 curl mysql-server mysql-client
		mysql-common mysql-workbench php phpmyadmin libapache2-mod-auth-mysql
		libapache2-mod-php php-mysql php-cli jam g++ gcc make libpam0g-dev
		libkrb5-dev pax ccache gcc-multilib g++-multilib flex suversion mongodb
		mongodb-client mongodb-server pg-backup-ctl pg-cloudconfig
		pg-rage-terminator-10 pgbackrest pgcharts pgcli pgdbf pgmodeler
		pgmodeler-common pgqd pgadmin4 pgadmin4-apache2 pgxnclient php-curl
		php-json php-cgi mariadb-server mariadb-client net-tools openssh-server
		tasksel sqlite3 sqlitebrowser libsqlite3-dev sybase
		mysql_upgrade;
	}	# end function ilamp_ins

	function ipgdb_ins () {
		# Install PostGres
		echo "Installing PostGres!";
		# See Notes from the function above
	}	# end function ipgdb_ins

res=mysql_bup;
res=confg_bup;
#res=prgap_prg;
#res=prgph_prg;
#res=prgdb_prg;
#res=prgpg_prg;
#res=ilamp_ins;
#res=ipgdb_ins;
#reboot;
exit;