*nix: nslookup to resolve an IP to host name
nslookup is useful to resolve an ip address to a host name in the linux/unix environment.
nslookup - query Internet name servers interactively
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Ruby : Where are the gems on ubuntu 7.04
It took me some time to figure it out where the gems are installed on my ubuntu 7.04 linux machine so I thought I would save it here as a reminder. The ruby gems are stored here:
/var/lib/gems/1.8/gems
What I did to find this is to run gem install without sudo to see the error message:
me@desktop:/usr/lib/ruby/1.8$ gem install rails Bulk updating Gem source index for: http://gems.rubyforge.org ERROR: While executing gem ... (Errno::EACCES) Permission denied - /var/lib/gems/1.8/cache/rails-1.2.3.gem
The permission denied message gave me my answer. Who said error messages are not educational?
Hurray!
