RVM Prerequisites

RVM uses the following standard *nix tools, some are builtin to bash:

• bash (>= 3.2)
• awk
• sed
• grep
• which
• ls
• cp
• tar
• curl
• gunzip
• bunzip2

Additionally the following libraries are required.

• git (for updating RVM itself, and for installing '-head' versions of rubies)
• subversion (for installing '-head' rubies)

If you intend on using RVM in Zsh, be sure to have zsh >= 4.3.5 in addition to the above requirements.