How to Upgrade PhpMyAdmin in Linux distributions OS like Ubuntu, Redhat etc.. ?

There are 2 ways to install & maintain upgrade phpmyadmin in Linux operating systems.

First way :

Automated installations by using the personal archive repository for phpmyadmin

For adding repository list to Linux –

sudo add-apt-repository ppa:nijel/phpmyadmin

For first time installations

sudo apt-get install phpmyadmin

For updating the existing phpmyadmin second time onward where installation was done using the above command

sudo apt-get update phpmyadmin

Second way :

Manual installation by using the phpmyadmin download package

Make sure you have the sudo/root permissions for all software installations. 

Example takes was to upgarde to 4.8.1 version phpmyadmin –

Goto your home directory

cd /home/{username}

Download phpmyadmin package

wget https://files.phpmyadmin.net/phpMyAdmin/4.8.1/phpMyAdmin-4.8.1-all-languages.tar.gz

extract the downloaded package to folder

tar -zxvf phpMyAdmin-4.8.1-all-languages.tar.gz

rename it to proper folder as used in the webserver configurations

mv phpMyAdmin-4.8.1-all-languages phpmyadmin

Goto user share directory where all shared software installations are managed

cd /usr/share

Move if any existing phpmyadmin folder to rename as old folder

sudo mv phpmyadmin phpmyadmin_old

Goto your home directory

cd /home/{username}

move the download& extracted phpmyadmin folder to user share directory

sudo mv phpmyadmin /usr/share/phpmyadmin

Goto user share directory

cd /usr/share

Provide the required permissions for www-data webserver user to read/write/execute

sudo chgrp -R www-data phpmyadmin

sudo chmod -R ug+rwx phpmyadmin

Your phpmyadmin has been upgraded to latest version.