Got warning message when running brew list

Question

When I run brew list on my Mac OS X EI Capitan, it will always give me errors message like this --

$ brew list
/bin/sh: __rvm_ruby_string_find: line 8: syntax error near unexpected token `('
/bin/sh: __rvm_ruby_string_find: line 8: ` ruby-+([1-9]) | ruby-+([1-9]).+([0-9]) | ruby-1.+([1-9]).+([0-9]) | jruby-[19]*)'
/bin/sh: error importing function definition for `__rvm_ruby_string_find'
/bin/sh: __rvm_project_ruby_env_load_parse_file: line 9: syntax error near unexpected token `('
/bin/sh: __rvm_project_ruby_env_load_parse_file: line 9: ` __rvm_read_lines __variables <( { cat "$1"; echo ""; } | __rvm_sed "${__sed_commands[@]}" )'
/bin/sh: error importing function definition for `__rvm_project_ruby_env_load_parse_file'
/bin/sh: __rvm_remove_without_gems: line 2: syntax error near unexpected token `('
/bin/sh: __rvm_remove_without_gems: line 2: ` __rvm_read_lines __gems_to_remove <('
/bin/sh: error importing function definition for `__rvm_remove_without_gems'
gdbm        openssl     python      readline    sqlite

Image Link

Every time running rvm, it will also give me similar error message.

$ rvm
bash: __rvm_ruby_string_find: line 8: syntax error near unexpected token `('
bash: __rvm_ruby_string_find: line 8: ` ruby-+([1-9]) | ruby-+([1-9]).+([0-9]) | ruby-1.+([1-9]).+([0-9]) | jruby-[19]*)'
bash: error importing function definition for `__rvm_ruby_string_find'

How can I resolve it? Thanks!

Answer 1

OS X ships with an older version of ruby. Use homebrew to install a newer version of ruby and see if that fixes the issue

$ brew install ruby

You'll also want to make sure that /usr/local/bin/ruby is in your $PATH before any other ruby version. Honestly, I can't remember if the install does this automatically but it's good to check.