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Aleksey Porfirov lexqt

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@dideler
dideler / upgrade-postgres-9.3-to-9.4.md
Last active June 8, 2020 03:24
Upgrading PostgreSQL from 9.3 to 9.4 when upgrading Ubuntu 14.04 to 14.10

TL;DR

Create a backup:

pg_dumpall > mybackup.sql

Perform the upgrade:

sudo pg_dropcluster 9.4 main --stop
@xdamman
xdamman / install_ffmpeg_ubuntu.sh
Created July 2, 2014 21:03
Install latest ffmpeg on ubuntu 12.04 or 14.04
#!/bin/bash
# Bash script to install latest version of ffmpeg and its dependencies on Ubuntu 12.04 or 14.04
# Inspired from https://gist.github.com/faleev/3435377
# Remove any existing packages:
sudo apt-get -y remove ffmpeg x264 libav-tools libvpx-dev libx264-dev
# Get the dependencies (Ubuntu Server or headless users):
sudo apt-get update
#!/bin/bash
PROGNAME=${0##*/}
INPUT=''
QUIET='0'
NOSTATS='0'
max_input_size=0
max_output_size=0
usage()
@dgouldin
dgouldin / gist:3485236
Created August 27, 2012 03:10
Dead letter exchange based celery countdown implementation
class FrealCountdownTask(task.Task):
abstract = True
@classmethod
def apply_async(self, args=None, kwargs=None,
task_id=None, producer=None, connection=None, router=None,
link=None, link_error=None, publisher=None, add_to_parent=True,
**options):
try:
@srpouyet
srpouyet / mongodb
Created February 29, 2012 17:14
Mongodb logrotate on Ubuntu
# Put this in /etc/logrotate.d/mongodb
# http://stackoverflow.com/questions/5004626/mongodb-log-file-growth
/var/log/mongo/*.log {
daily
rotate 30
compress
dateext
missingok
notifempty
@lonnen
lonnen / stats.sh
Created December 28, 2011 17:57
quarterly git stats
# detailed stats for an individual
git log --shortstat --author=AUTHOR --since=10-1-2011 | grep "files changed" | awk '{files+=$1; inserted+=$4; deleted+=$6} END {print "files changed: ", files, "\nlines inserted: ", inserted, "\nlines deleted: ", deleted}'
# commit numbers by author for the repo
git log --pretty=format:%an --since=10-1-2011 | awk '{ ++c[$0]; } END { for(cc in c) printf "%5d %s\n",c[cc],cc; }' | sort -r
# detailed stats per author, including contribution to the total change
git log --numstat --since=10-1-2011 | awk '
function printStats(author) {
printf "%s:\n", author
@EspadaV8
EspadaV8 / gist:1357237
Created November 11, 2011 05:04
Script to import Geonames into PostgreSQL taken from http://forum.geonames.org/gforum/posts/list/15/926.page
#!/bin/bash
#===============================================================================
#
# FILE: getgeo.sh
#
# USAGE: ./getgeo.sh
#
# DESCRIPTION: run the script so that the geodata will be downloaded and inserted into your
# database
#
@hgmnz
hgmnz / query_planner.markdown
Created March 23, 2011 14:14
PostgreSQL query plan and SQL performance notes

Types of index scans

Indexes

Sequential Scan:

  • Read every row in the table
  • No reading of index. Reading from indexes is also expensive.