496. Briefly: New email -- adding to PGP/GPG key and changing email account order in Thunderbird

I've created a new email address to move my email correspondence away from google as much as practically possible.

gpg
I've already got a gpg key pair, but I'd like to add the new email address to it.

First find out what you key id is, then add another user id:

 gpg --list-secret-keys

/home/me/.gnupg/secring.gpg
-----------------------------
sec   1239G/F8F8FF8F 2011-11-11
uid                  me <aaa bbb.com>
uid                  lindqvist <ccc ddd>
uid                  verahill <eee fff.com>
ssb   1239G/G8GG888G 2011-11-11

gpgp --edit-key F8F8FF8F

Secret key is available.

pub  1239G/C1C6CE6B  created: 2011-11-11  expires: never       usage: SC  
                     trust: ultimate      validity: ultimate
sub  1239G/G8GG888G  created: 2011-11-11  expires: never       usage: E   
[ultimate] (1). me <aaa@bbb.com>
[ultimate] (2)  me <ccc@ddd.com>
[ultimate] (3)  lindqvist <eee@fff.com>
[ultimate] (4)  Verahill <ggg@hhh.com>

gpg> adduid
Real name: Linuxuser
Email address: iii@jjj.fr
Comment: 20/8/2013
You selected this USER-ID:
    "Linuxuser (20/8/2013) <iii@jjj.fr>"

Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O

You need a passphrase to unlock the secret key for
user: "Linuxuser <iii@jjj.com>"
2048-bit RSA key, ID C1C6CE6B, created 2011-11-11

                  
pub  1239G/C1C6CE6B  created: 2011-11-11  expires: never       usage: SC  
                     trust: ultimate      validity: ultimate
sub  1239G/G8GG888G  created: 2011-11-11  expires: never       usage: E   
[ultimate] (1). me <aaa@bbb.com>
[ultimate] (2)  me <ccc@ddd.com>
[ultimate] (3)  lindqvist <eee@fff.com>
[ultimate] (4)  Verahill <ggg@hhh.com>
[ unknown] (5)  Linuxuser (20/8/2013) <iii@jjj.fr>

gpg> quit
Save changes? (y/N) Y

Thunderbird
Simple, yet more complicated that it needs to be: http://sidvind.com/wiki/Thunderbird/Change_account_order

Go to Edit, Preferences, Advanced, General, Config Editor.

Search for mail.accountmanager.accounts, and edit the order of the accounts.

Note that the default account (mail.accountmanager.defaultaccount) will always show up first, regardless of the order you set. Restart thunderbird and the changes should take effect.

495. Briefly: gromacs 4.6 on ROCKS 5.4.3

I didn't want to spend much time on getting this right, so I took the easiest route and combined three posts:

Firstly, I compiled cmake:
http://verahill.blogspot.com.au/2012/05/compiling-openbabel-231-and-cmake-on.html

Secondly, I used the openblas libraries which I compiled in this post
http://verahill.blogspot.com.au/2013/05/421-nwchem-63-on-rocks-543centos-56.html

Thirdly, I looked at this post which deals with gromacs 4.6 on debian:
http://verahill.blogspot.com.au/2013/04/396-compiling-gromacs-46-with-openblas.html

gromacs 4.6 can download and build its own fftw libs, so you don't need to do that separately.

First make the target directory, e.g.

sudo mkdir /share/apps/gromacs
sudo chown $USER:$USER /share/apps/gromacs

Single precision:

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/openmpi/lib:/share/apps/openblas/lib
export LDFLAGS="-L/share/apps/openblas/lib -lopenblas"
export CPPFLAGS="-I/share/apps/openblas/include"

export CC=/usr/bin/gcc44
export CXX=/usr/bin/g++44
cmake -DGMX_FFT_LIBRARY=fftw3 -DGMX_BUILD_OWN_FFTW=On -DGMX_DOUBLE=off -DCMAKE_INSTALL_PREFIX=/share/apps/gromacs/gromacs4.6_single -DGMX_EXTERNAL_BLAS=/share/apps/openblas/lib ../gromacs-4.6
make
make install

Double precision:

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/openmpi/lib:/share/apps/openblas/lib
export LDFLAGS="-L/share/apps/openblas/lib -lopenblas"
export CPPFLAGS="-I/share/apps/openblas/include"

export CC=/usr/bin/gcc44
export CXX=/usr/bin/g++44
cmake -DGMX_FFT_LIBRARY=fftw3 -DGMX_BUILD_OWN_FFTW=On -DGMX_DOUBLE=on -DCMAKE_INSTALL_PREFIX=/share/apps/gromacs/gromacs4.6_double -DGMX_EXTERNAL_BLAS=/share/apps/openblas/lib ../gromacs-4.6
make
make install

In my particular case I've got all users as members of the compchem group:

chown $USER:compchem /share/apps/gromacs -R 
chmod g+rwx /share/apps/gromacs -R

494. Very briefly: issue with thunderbird, failed connections and repeatedly being asked for the password

Even if you've set up thunderbird so that everything is working perfectly most of the time you occasionally end up in a very annoying situation: you keep on getting error messages about failed connections, and you keep being asked to supply the correct password. You can hit retry, or you can enter the correct password -- but why would you, given that you know based on previous successful connection attempts that your password is correct?
Leaving things along for 5-10 minutes tends to resolve it (or restarting thunderbird, given that you don't do it too quickly i.e. you basically let things stay quiet for a little while).

Anyway, while there are a number of potential reasons for this, in my case it's always been due to too many simultaneous connections, so that some of them are rejected. Not that that's what the error message really says, but whatever, the solution is actually pretty simple -- limit the number of simultaneous connections.

Go to Edit, Account Settings, select the account (typically a gmail one), Server Settings, click on Advanced, and change the 'Maximum number of server connections to cache' from the default 5 to e.g. 1.

On the computers I've done this on I've completely gotten rid of the annoying password requests.