I'm uploading my Rails proyect to a Ubuntu Server running 12.04LTS and I can't seem to fix this issue! Whether I do a bundle install or try to use the whenever gem I get that error! I've read a lot but still I'm unable to fix it
/lib/ruby/2.0.0/tmpdir.rb:34:in `tmpdir': could not find a temporary directory (ArgumentError)
Your Ubuntu installation probably doesn't have
TMPDIR set. You should set that variable in your startup.
This link has more information on environment variables in Ubuntu: https://help.ubuntu.com/community/EnvironmentVariables