drnic/freeze_gem_cli

## freeze_gem_cli
#!/usr/bin/env ruby

# Installs a gem in a specific RVM ruby/gemset, and helps you create
# an alias to a CLI/bin script to always use that gemset.
# Wonderfully useful for utility scripts (engineyard's ey or github-gem's gh)
#
# USAGE:
#   freeze_gem_cli engineyard ey
#   freeze_gem_cli github gh ruby-1.8.7p334
#
# Then add the suggested aliases to your .bash_profile

gem_name, gem_executable, rvmruby = ARGV[0..2]

puts "USAGE: freeze_gem_cli GEMNAME [EXEC] [RVMRUBY]" and exit 1 unless gem_name
gem_executable ||= gem_name
gemset_name    = "#{gem_name}-cli-#{gem_executable}"
rvmruby        ||= `rvm current`.strip
rvmgemset      = "#{rvmruby}@#{gemset_name}"

def run_cmd(cmd)
  puts cmd
  puts `#{cmd}`
end

run_cmd "rvm --create #{rvmgemset} exec gem install #{gem_name}"
run_cmd "rvm wrapper #{rvmgemset} --no-prefix #{gem_executable}"
	#!/usr/bin/env ruby

	# Installs a gem in a specific RVM ruby/gemset, and helps you create
	# an alias to a CLI/bin script to always use that gemset.
	# Wonderfully useful for utility scripts (engineyard's ey or github-gem's gh)
	#
	# USAGE:
	# freeze_gem_cli engineyard ey
	# freeze_gem_cli github gh ruby-1.8.7p334
	#
	# Then add the suggested aliases to your .bash_profile

	gem_name, gem_executable, rvmruby = ARGV[0..2]

	puts "USAGE: freeze_gem_cli GEMNAME [EXEC] [RVMRUBY]" and exit 1 unless gem_name
	gem_executable \|\|= gem_name
	gemset_name = "#{gem_name}-cli-#{gem_executable}"
	rvmruby \|\|= `rvm current`.strip
	rvmgemset = "#{rvmruby}@#{gemset_name}"

	def run_cmd(cmd)
	puts cmd
	puts `#{cmd}`
	end

	run_cmd "rvm --create #{rvmgemset} exec gem install #{gem_name}"
	run_cmd "rvm wrapper #{rvmgemset} --no-prefix #{gem_executable}"