Bash for linux

1. mv /.bashrc.bak.123456-789 .bashrc
2. rm -rf abc/
3. update-alternatives –install “/usr/bin/drush” “drush” “/var/aegir/drush/drush” 2
update-alternatives –install “/usr/bin/drush” “drush” “/var/aegir/drush6/drush” 1
update-alternatives –config drush