Installation - Drush

drushinstall.txt

Installation drush

cd /usr/local/lib/
wget  http://ftp.drupal.org/files/projects/drush-7.x-5.9.tar.gz
tar zxvf drush-7.x-5.9.tar.gz
cd drush/ <-----There is drush, just checking
cd /usr/local/bin
ln -s /usr/local/lib/drush/drush drush
Then:
Go to the root folder of your website
cd /root/folder/of/drupalsite
drush

6. Optional. See examples/example.bashrc for instructions on how to add some
   useful shell aliases that provides even tighter integration between
   drush and bash. You may source this file directly into your shell by adding to
   your .bashrc (rr equivalent): source /path/to/drush/examples/example.bashrc

7. Optional. If you didn't source it in Step 6 above, see top of
   drush.complete.sh file for instructions adding bash completion for drush
   command to your shell.  Once configured, completion works for site aliases, 
   command names, shell aliases, global options, and command-specific options.

8. Optional. If drush.complete.sh is being sourced (ideally in
   bash_completion.d), you can use the supplied __drush_ps1() sh function to
   add your current drush site (set with `drush use @sitename`) to your PS1
   prompt like so:

       if [ "\$(type -t __git_ps1)" ] && [ "\$(type -t __drush_ps1)" ]; then
         PS1='\u@\h \w$(__git_ps1 " (%s)")$(__drush_ps1 "[%s]")\$ '
       fi

    Putting this in a .bashrc/.bash_profile/.profile would produce this prompt:

      msonnabaum@hostname ~/repos/drush (master)[@sitename]$