I just followed the directions on the drush website for installing drush.
I performed the command
php -r "readfile('http://files.drush.org/drush.phar');" > drush
Then attempted the next command
php drush core-status which resulted in lots of text basically saying "Permission Denied".
So I went ahead and performed the next direction which makes the scripts executable.
chmod +x drush
I then attempted
php drush core-status again.
Now the console just sits there when I type the command. It displays nothing and never released back to prompt. I had to ctrl+c to free up the console.
What am I doing wrong here? Are their dependencies on drush that are not listed in the install document? Is their some way to see errors that are not printed to the console?
I was using php 5.4 originally but updated to 5.5 and that did not solve the problem. CentOS 6.7.