/usr/lib/ruby/1.8/compass/commands/ is in libcompass-ruby1.8 0.10.6~dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/1.8/compass/commands/base.rb
/usr/lib/ruby/1.8/compass/commands/create_project.rb
/usr/lib/ruby/1.8/compass/commands/generate_grid_background.rb
/usr/lib/ruby/1.8/compass/commands/help.rb
/usr/lib/ruby/1.8/compass/commands/imports.rb
/usr/lib/ruby/1.8/compass/commands/installer_command.rb
/usr/lib/ruby/1.8/compass/commands/interactive.rb
/usr/lib/ruby/1.8/compass/commands/list_frameworks.rb
/usr/lib/ruby/1.8/compass/commands/print_version.rb
/usr/lib/ruby/1.8/compass/commands/project_base.rb
/usr/lib/ruby/1.8/compass/commands/project_stats.rb
/usr/lib/ruby/1.8/compass/commands/registry.rb
/usr/lib/ruby/1.8/compass/commands/stamp_pattern.rb
/usr/lib/ruby/1.8/compass/commands/unpack_extension.rb
/usr/lib/ruby/1.8/compass/commands/update_project.rb
/usr/lib/ruby/1.8/compass/commands/validate_project.rb
/usr/lib/ruby/1.8/compass/commands/watch_project.rb
/usr/lib/ruby/1.8/compass/commands/write_configuration.rb