Double space a file using Ruby
Double space a file with Ruby using the command
ruby -pe 'puts' < file.txt
Double space a file with Ruby using the command
ruby -pe 'puts' < file.txt
You can install Rails in a Fedora system with these commands…
yum -y install ruby ruby-devel ruby-irb ruby-libs ruby-rdoc ruby-ri rubygems
sudo gem update
sudo gem install rails --include-dependencies
This will let you run a linux command based on the success of anther command. Note: This will only work in bash shell.
ruby Create_PDF.rb && if [ $? == 0 ]; then kpdf report.pdf; fi
This will let you find whether a variable is defined in ruby.
if(defined? var_name) then
print var_name + " is set"
end
Use this command to install a ruby gem in Linux – you must be connected to the net
sudo gem install ruport -y