Log in to your Managed Hosting Server via SSH
Add these two lines to .bashrc:
alias php5cli='/usr/local/bin/php5-54LATEST-CLI'
alias composer='php5cli ~/composer.phar'
Reload .bashrc with
$ source .bashrc
Install Composer with
$ curl -sS https://getcomposer.org/installer | php5cli
Done.
Check the installation with
$ composer -V
You should see something like this
Composer version 99f5b5a2383604d73c23aac19cea91a6b047171f 2014-01-12 20:13:00
Your version will probably differ.
Great! Works perfectly. Thx