File Operations
Chmod file
File.chmod(0600, file)
Resource: https://stackoverflow.com/questions/22707040/change-permissions-of-file-in-ruby
Move file without fileutils
File.rename source_path, target_path
Resource: https://stackoverflow.com/questions/403239/how-do-i-move-a-file-with-ruby
Fix extensions not built errors
Run this command:
gem pristine --all
Resource: https://stackoverflow.com/questions/48339706/ignoring-gems-because-its-extensions-are-not-built
Multiline comments
=begin
stuff
=end
Resource: https://stackoverflow.com/questions/2989762/multi-line-comments-in-ruby
Install specific version of a gem
Install the bcrypt_pbkdf package that came before version 2.0.
gem install bcrypt_pbkdf -v '<2.0'
Don’t install docs with gem by default
echo 'gem: --no-document' >> ~/.gemrc
Resource: https://stackoverflow.com/questions/1381725/how-to-make-no-ri-no-rdoc-the-default-for-gem-install
RVM
Install rvm and ruby
VER=3.2.1
gpg --keyserver keyserver.ubuntu.com \
--recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
\curl -sSL https://get.rvm.io | bash -s stable --ruby
rvm install ruby-"${VER}"
Install specific ruby version and use by default
VER=3.2.1
rvm install $VER
rvm use $VER --default