PostgreSQL: get function source code

select pg_get_functiondef(pg_proc.oid) from pg_proc, pg_namespace  where proname = 'add_cdr_req' and pg_namespace.oid = pg_proc.pronamespace and pg_namespace.nspname = 'crm_db';

Displaying current path in the window title with byobu on centos 6

The problem with CentOS 6, is that the tmux version that comes from the standard repo. is v1.6, and we need at least 1.8 to achieve the result.
So install tmux from the latest sources like explained here:

# download latest libevent2 and tmux sources, and extract them somewhere
# (thx bluejedi for tip on latest tmux URL)
#
# at the time of writing:
# https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
# http://sourceforge.net/projects/tmux/files/latest/download?source=files
# 
 
# install deps
yum install gcc kernel-devel make ncurses-devel
 
# cd to libevent2 src
./configure --prefix=/usr/local
make && make install
 
# cd to tmux src
LDFLAGS="-L/usr/local/lib -Wl,-rpath=/usr/local/lib" ./configure --prefix=/usr/local
make && make install
 
# you're good to go, for a sample ~/.tmux.conf check out
# https://github.com/sturadnidge/misc/blob/master/.tmux.conf

NB: Kill old tmux sessions before running byobu again.
And then use the following setting in your $HOME/.byobu/.tmux.conf

set -g status-left '#{pane_current_path} '