Update cheatsheets

rvm

@@ -0,0 +1,41 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# rvm
+
+> Easily installing, managing, and working with multiple ruby environments.
+> More information: <https://rvm.io>.
+
+- Install one or more versions of Ruby:
+
+`rvm install {{version1 version2 ...}}`
+
+- Display a list of installed versions:
+
+`rvm list`
+
+- Use a specific version of Ruby:
+
+`rvm use {{version}}`
+
+- Set the default Ruby version:
+
+`rvm --default use {{version}}`
+
+- Upgrade a version of Ruby to a new version:
+
+`rvm upgrade {{current_version}} {{new_version}}`
+
+- Uninstall a version of Ruby and keep its sources:
+
+`rvm uninstall {{version}}`
+
+- Remove a version of Ruby and its sources:
+
+`rvm remove {{version}}`
+
+- Show specific dependencies for your OS:
+
+`rvm requirements`