How did I get Mercurial working (on Ubuntu)?

I worked off of Kenny Cheung’s notes, with a few minor changes (not sure if they’re required).

• Make sure you have Mercurial, or get it with sudo apt-get install mercurial
• Save the “classes” and “classes.pub” keys in ~/.ssh/keys/
• Edit permissions of the keys with chmod go-rw ~/.ssh/keys/*
• Set up a Mercurial config file in ~/.hgrc. Mine looks like:

  [ui]
  username = Matt Edwards <matted@mit.edu>
  ssh = ssh -p port -i ~/.ssh/keys/classes -x
  editor = emacs -nw --no-site-file
  [extensions]
  convert =
  fetch =
  [hooks]
  changegroup = hg update >&2

• Run Neil’s hgclone script (classes is the name of the private key): ./hgclone.sh 863.12 classes fab.cba.mit.edu 846
• Things should work now, test with an

  cd 863.12
  hg pull

Extra note: If you have X forwarding on and get an annoying message like remote: X11 forwarding request failed on channel 0, fix it by adding this to your ~/.ssh/config:

Host fab.cba.mit.edu
ForwardX11 no

To still X forward with other hosts (since the global default has to be ForwardX11 no), add something else like:

Host *.csail.mit.edu
ForwardX11 yes