$ time ruby -e "puts 'hello world'"
The program 'ruby' can be found in the following packages:
* ruby1.8
* ruby1.9.1
Ask your administrator to install one of them
real 0m0.060s
user 0m0.040s
sys 0m0.016s $ time ruby -e "puts 'hello world'"
The program 'ruby' can be found in the following packages:
* ruby1.8
* ruby1.9.1
Ask your administrator to install one of them
real 0m0.060s
user 0m0.040s
sys 0m0.016s1. Pick one (just for this session): $ rbenv shell ruby1.9.1
2. And then run the example.
By the way 1.9.1 is really old already, 1.9.3 has a lot more bug fixes.
The Ruby language changed between 1.9 and 1.9.1, so a new package name had to be created.
If 1.9.1 was just called "1.9" it would break all of the packages in Debian that depend on whatever language features were different between 1.9 and 1.9.1.
"ruby1.9.1" in Debian 7.0 provides version 1.9.3.194.