MacBook-Pro:~ Owner$ rvm install 1.9.3
Installing Ruby from source to: /Users/Owner/.rvm/rubies/ruby-1.9.3-rc1, this may take a while depending on your cpu(s)...

ruby-1.9.3-rc1 - #fetching
ruby-1.9.3-rc1 - #extracted to /Users/Owner/.rvm/src/ruby-1.9.3-rc1 (already extracted)
Fetching yaml-0.1.4.tar.gz to /Users/Owner/.rvm/archives
Extracting yaml-0.1.4.tar.gz to /Users/Owner/.rvm/src
Configuring yaml in /Users/Owner/.rvm/src/yaml-0.1.4.
Compiling yaml in /Users/Owner/.rvm/src/yaml-0.1.4.
/Users/Owner/.rvm/scripts/functions/utility: line 152: date: command not found
Installing yaml to /Users/Owner/.rvm/usr
/Users/Owner/.rvm/scripts/functions/utility: line 152: date: command not found
ERROR: Error running 'make install', please read /Users/Owner/.rvm/log/ruby-1.9.3-rc1/yaml/make.install.log
env: bash: No such file or directory
ruby-1.9.3-rc1 - #configuring
ruby-1.9.3-rc1 - #compiling
ERROR: Error running 'make ', please read /Users/Owner/.rvm/log/ruby-1.9.3-rc1/make.log
ERROR: There has been an error while running make. Halting the installation.
MacBook-Pro:~ Owner$