To install Composer you need to follow these steps: 1) Connect to your hosting account via SSH. SSH access can be found in the hosting service activation letter. 2) Create a new file using a text editor (for example, nano) and name it composer.sh:

nano composer.sh

3) Paste this code into the file:

#!/bin/sh
 
EXPECTED_SIGNATURE=$(wget -q -O - https://composer.github.io/installer.sig)
 php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
 ACTUAL_SIGNATURE=$(php -r "echo hash_file('SHA384', 'composer-setup.php');")
 
if [ "$EXPECTED_SIGNATURE" != "$ACTUAL_SIGNATURE" ]
 then
 >&2 echo 'ERROR: Invalid installer signature'
 rm composer-setup.php
 exit 1
 fi
 
php composer-setup.php --quiet
 RESULT=$?
 rm composer-setup.php

This script will download the latest version of Composer and perform the installation. 4) Save changes and exit the text editor (for nano, press the key combination CTRL + X, Y and ENTER). 5) Execute the script with the following command:

sh composer.sh

6) The script will not report the execution result. To check the installation is correct, run the command:

./composer.phar