postgresql - how to install under ubuntu (debian)

uBuntu Community Wiki - PostgreSQL

How To Install and Use PostgreSQL on Ubuntu 14.04 @ Digital Ocean

install via apt-get

$ sudo apt-get update
$ sudo apt-get install postgresql postgresql-contrib

login as linux user postgres (that was auto-created during installation)

$ sudo -i -u postgres 

launch interactive postgresql console

$ psql

quit interactive console

$ \q

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Convert .MP4 to .AVI - Linux

$ sudo apt-get install mencoder

$ mencoder source_movie.mp4 -channels 6 -ovc xvid -xvidencopts fixed_quant=4 -vf harddup -oac pcm -o dest_movie.avi

Installing Django Under Ubuntu 11-04

From the $ prompt of the terminal:

$ sudo apt-get install python-django

Recursive Delete Folder & Files in Linux

rm -Rf *

or

rm -Rf rootfolder

Komodo Edit - light-weight Python IDE - Ubuntu Linux

Installing under Ubuntu

CPU & Memory Info in Linux

cat /proc/meminfo
cat /proc/cpuinfo

geany

Finally, in search of a light-weight text editor for ubuntu - one that has code folding and a decent selection of editing facilities (i.e. a tier above gedit and scite), I come to GEANY.

idiotuser@computer:~$ sudo apt-get install geany

Configure with a dark colour scheme from http://download.geany.org/contrib/oblivion2.tar.gz, and you're good to go.

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Quick Punt:

I've been using Geany for a couple of months now, and I can whole-heartedly recommend it. It could do with a couple more short-cut keys (but maybe they're actually in there somewhere and I've just missed them), but other than that, its a winnner. I've been using it on my Lenovo X100e netbook running Ubuntu 10-1- Meerkat, and it runs snappily, so I can do python dev complete with both basic predictive text and symbol explorers, v.nice. For those of you who are not quite VI/EMACS streetfighters, but want a fast but solid python IDE, rub this lamp.

EMACS

COLOUR SCHEME
stack overflow - http://stackoverflow.com/questions/1132919/how-do-i-set-up-emacs-colors-correctly
emacs fu - http://emacs-fu.blogspot.com/2009/03/color-theming.html

to mount a disk in linux

all devices are listed as files in /dev

e.g. $ ls -l /dev
for a list of all devices in /dev

to filter it down to devices containing the string 'sda'
$ ls -l /dev | grep -i sda

which for example returns

ptysd
sda
sda1
sda2
sda5
sdb
... and more

then
$ sudo fdisk -l /dev/sda

fdisk in this case yields partition information for the device
fdisk --help for usage

also
$ cat /var/log/messages

mod_wsgi

mod_wsgi is now the effective supercedent of mod_python

http://code.google.com/p/modwsgi/

ubuntu package = libapache2-mod-wsgi

ERROR
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
FIX - courtesy of Mohamed Aslam

http://mohamedaslam.com/how-to-fix-apache-could-not-reliably-determine-the-servers-fully-qualified-domain-name-using-127011-for-servername-error-on-ubuntu/

What is mod_python ?

mod_python
1. o'Reilly article by Gregory Trubetskoy
2. WikiPedia

but, most importantly, it appears that
MOD_PYTHON IS DEAD !


LONG LIVE MOD_WSGI !
WSGI Project Page @ Google Code

modpython-project-is-now-officially-dead
modpython-project-soon-to-be-officially-dead
from django
Blog Piece
StackOverflow Thread

to run a pythonscript from ubuntu command line

to run a pythonscript from ubuntu command line

to execute script 'hw.py'
from the command line
in the director of 'hw.py' [i.e. if you entered 'ls' you would see hw.py in the listing)

first, make script executable by granting rights
$ sudo chmod +x hw.py

add the following line to the beginning of the script
#!/usr/bin/python

this instructs the shell to hand the script over to the the python runtime binary,
which is located /usr/bin/python

Linux Admin Blog [excellent]

Linux Admin Chris Siebenmann, @thatcks, maintains a rather excellent blog Wandering Thoughts @ http://utcc.utoronto.ca/~cks/space/blog/ .

Linux Python BlueTooth Dev

The official Linux BlueTooth protocol stack.
BlueZ
ubuntu pkg = bluez

A cross-platform Python Bluetooth API.
Light Blue
ubuntu pkg = python-lightblue

Python wrappers for bluetooth system resources.
Google PyBluez
ubuntu pkg = python-bluez

Open source implementation of the Object Exchange (OBEX) Protocol
Open OBEX
ubuntu pkg = openobex-apps

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bug with my broadcom bluetooth usb dongle
https://bugs.launchpad.net/ubuntu/+source/gnome-bluetooth/+bug/133690