RuboCop parallel auto-correct solution

aw_rpa.sh

$ aw rpa
# =>
# [fb34328a] Running rubocop --parallel
# [fb34328a]      Inspecting 157 files
# [fb34328a]      ..................................C..........................................................................................................................
# [fb34328a]
# [fb34328a]      Offenses:
# [fb34328a]
# [fb34328a]      app/app.rb:28:8: C: Layout/TrailingWhitespace: Trailing whitespace detected. (https://github.com/bbatsov/ruby-style-guide#no-trailing-whitespace)
# [fb34328a]          end
# [fb34328a]             ^
# [fb34328a]
# [fb34328a]      157 files inspected, 1 offense detected
# [fb34328a] Finished in 1.718 seconds with exit status 1 (failed)

# [abd1d776] Running rubocop --auto-correct app/app.rb
# [abd1d776]      Inspecting 1 file
# [abd1d776]      C
# [abd1d776]
# [abd1d776]      Offenses:
# [abd1d776]
# [abd1d776]      app/app.rb:28:8: C: [Corrected] Layout/TrailingWhitespace: Trailing whitespace detected. (https://github.com/bbatsov/ruby-style-guide#no-trailing-whitespace)
# [abd1d776]          end
# [abd1d776]             ^
# [abd1d776]
# [abd1d776]      1 file inspected, 1 offense detected, 1 offense corrected
# [abd1d776] Finished in 1.267 seconds with exit status 0 (successful)