jfriv

#!/bin/bash

# set up some variables

NOW_DATE=$(date '+%Y-%m-%d-%H-%M')
RESTORE_FROM_INSTANCE_ID=<source name>
TARGET_INSTANCE_ID=<target name>
TARGET_INSTANCE_CLASS=db.m4.large
VPC_ID=<vpc subnet id>
NEW_MASTER_PASS=<root password>

jackl0phty

---
- hosts: localhost
  connection: local
  gather_facts: no
  vars:
    region: us-east-1
    route_prefix: /32
  tasks:
    - command: curl --silent --fail http://checkip.amazonaws.com/
      register: external_ip

rponte

# The command finds the most recent tag that is reachable from a commit.
# If the tag points to the commit, then only the tag is shown.
# Otherwise, it suffixes the tag name with the number of additional commits on top of the tagged object 
# and the abbreviated object name of the most recent commit.
git describe

# With --abbrev set to 0, the command can be used to find the closest tagname without any suffix:
git describe --abbrev=0

# other examples

taylorhughes

# tested with celery[redis]==3.1.17

# to run with default configuration -- tasks will take 14 seconds to complete the 20 tasks in start_all() below

celery worker -A cluster_project.celery_app -Q tester -lINFO --concurrency=4

# to run with -Ofair -- tasks will take 10 seconds to complete

celery worker -A cluster_project.celery_app -Q tester -lINFO --concurrency=4 -Ofair

afrachioni

#include <sys/time.h>
#include <stdio.h>

unsigned long get_time();

int main(int nargs, char **args) {
        fprintf (stdout, "The current epoch time / ms: %ld\n", get_time());
        long start_time = get_time();
        int i;
        for (i = 0; i < 1e8; ++i);

jctosta

Screen Quick Reference

Basic

Description	Command
Start a new session with session name	screen -S <session_name>
List running sessions / screens	screen -ls
Attach to a running session	screen -x
Attach to a running session with name	screen -r

soheilhy

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

bee-keeper

content_type = ContentType.objects.get(app_label='', model='')
#get all permssions for this model
perms = Permission.objects.filter(content_type=content_type)

group = Group.objects.get(name='')

for p in perms:
    group.permissions.add(perms)

stuart11n

git branch -m old_branch new_branch         # Rename branch locally    
git push origin :old_branch                 # Delete the old branch    
git push --set-upstream origin new_branch   # Push the new branch, set local branch to track the new remote

FZambia

# rsyslog v5 configuration file

#### MODULES ####

$ModLoad imuxsock # provides support for local system logging (e.g. via logger command)
$ModLoad imklog   # provides kernel logging support (previously done by rklogd)
#$ModLoad immark  # provides --MARK-- message capability

# Provides UDP syslog reception
$ModLoad imudp