Rails console history command (via pry) -- can it be grepped or tailed?

user_441960 0
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In Rails 4 rails console I can type history and it will behave just like the history command from the bash shell. E.g.:

[25] my_rails_project »  history
  1: Nomination
  2: {:ad => "asdfsdasadf"}
  3: Nomination.count
  4: Nomination.count.to_sql
  5: Nomination.all.class
  6: Nomination.all.to_sql
  ...

Is there a way to search that history, e.g. history | grep Nomination? How about tail?

Note: When I initially wrote this question I thought the history command came from Rails itself, but it comes from the pry gem which I have in my system (my Gemfile specifies the jazz_hands gem which pulls in pry). Pry does in fact have a grep feature, e.g. history --grep Nomination will give me lines 1 and 3-6 above. It also has a tail feature. These are documented here: https://github.com/pry/pry/wiki/History

pry irb ruby-on-rails history
4 Answers

It's worth noting that if you are using pry then the history file will be located at ~/.pry_history. You may also come across this history file .byebug_history.

I've added the following commands to my ~/.pryrc config file.

Pry.config.commands.alias_command 'find.history', 'hist -G'

Pry::Commands.command 'search.history', 'filter commands in the history using fzf and output the selected command' do
  puts `cat ~/.pry_history | sort | uniq | fzf --tac --tiebreak=index --height=20`
end

Pry::Commands.command 'search.history.run', 'filter commands in the history using fzf and execute the selected command' do
  _pry_.input = StringIO.new(`cat ~/.pry_history | sort | uniq | fzf --tac --tiebreak=index --height=20 | perl -pe 'chomp if eof'`)
end
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