14.6. Issuing system commands from inside Ruby programs
You can issue system commands in several ways in Ruby. We’ll look primarily at two of them: the system method and the `` (backticks) technique. The other ways to communicate with system programs involve somewhat lower-level programming and are more system-dependent and therefore somewhat outside the scope of this book. We’ll take a brief look at them nonetheless, and if they seem to be something you need, you can explore them further.
14.6.1. The system method and backticks
The system method calls a system program. Backticks (``) call a system program and return its output. The choice depends on what you want to do.
Executing system programs with the system method
To use system, send it ...