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Squash Rails migrations in this one easy step
#!/usr/bin/env bash
git ls-files db/migrate/*.rb | sort | tail -1 | \
ruby -e "schema_version=STDIN.read[/\d+/]; init_schema=%(db/migrate/#{schema_version}_init_schema.rb);
%x(git rm -f db/migrate/*.rb;
mkdir db/migrate;
git mv db/schema.rb #{init_schema};
rake db:migrate;
git add db/schema.rb; git commit -m 'Squashed migrations')"
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