Ruby Command Line Switches

Common command line switches for the ruby command:

-c switch

Check the syntax of a program without executing it

-w switch

Gives warning messages during program execution

-e switch

Executes the code provided in quotation marks

ruby -e 'puts "code demo!"'

-l switch

Line mode, prints a newline after every line of output

-rname switch

Requires the named feature

ruby -rprofile

-v switch

Shows the ruby version and executes the code in verbose mode

--version switch

Shows ruby version information

-h switch

Shows information about all command-line switches for the interpreter