Quilt.js – Declarative Views for Backbone.
The Pragmatic Programmer: From Journeyman to Master
The Exceptional Beauty of Doom 3’s Source Code
Monthly Archives: January 2013
Bookmarks 2013-01-13
Common JavaScript “Gotchas”
web.py – Ima interesantan library za baze, probaj iskoristi za SQL Anywhere
http://ak.net84.net/
WordPress Widget Tutorial
Creating a Simple WordPress Widget
Linux Cheat Sheet
PROCESS BASICS
ps auxww -H
All processes, with params + hierarchy
pgrep -fl $PROCESS_NAME
Filtriraj procese
strace -f -p $PID
What is a process doing?
lsof -p $PID
What files does a process have open?
watch 'ps aux | grep $PROCESS_NAME'
Keep an eye on a process
MEMORY
free -m cat /proc/meminfo
How much mem is free?
vmstat 1
Are we swapping?
ps aux --sort=-resident|head -11
List the top 10 memory hogs
DATABASES
pt-query-digest --processlist h=localhost --print --no-report --user xxxx --password *****
“Tail” all queries hitting mysql. More
ssh -L 3307:localhost:3306 user@hostname -N
Connect to production mysql locally on port 3307 via ssh
DISK/FILES
iostat -xnk 5
Check reads/writes per disk
find . -size +100M
Find files over 100MB
find . -mtime -7
Find files created within the last 7 days
find . -mtime +14 -type f -name '*.gz'
Find files older than 14 days
find *.gz -mtime +14 -type f -exec rm {} \;
Delete files older than 14 days
tail -f file.log | grep 192.168.1.1
Monitor a log file for an IP or anything else
NETWORK
lsof -nPi tcp
TCP sockets in use
ip addr ifconfig iwconfig
Get IP/Ethernet info
mtr google.com
Traceroute with stats over time (top for traceroute)
tcptraceroute google.com
Traceroute using TCP to avoid ICMP blockage
iftop
Show traffic by port
netstat -tlnp
Show all ports listening with process PID
Izvor: http://rubytune.com/cheat
Django south
South je aplikacija za Django koja prati promjene Django Modela i zapisuje te promjene u bazu.
npr. model Korisnik ima polja: Ime i Prezime dužine 10 znakova.
Kasnije se pokaže da je to pre malo znakova.
Bez south aplikacije bi morali ručno promjeniti polja u bazi.
South nam omogućava da promjene vršimo direktno u modelima.
$ easy_install south
Naredba za instalaciju
Moramo dodati ‘south’ u INSTALLED_APPS u settings.py
$ python.py manage.py schemamigration app_name --initial
Napravimo inicijalnu migraciju, tj. snimimo postojeće stanje.
$ python.py manage.py syncdb
Moramo pokrenuti ‘syncdb’ jer south dodaje svoje tablice u bazu.
Redoslijed je bitan, jer ako pokrenemo syncdb prije schemamigration, syncdb ce zapisati tablice u bazu i south neće moći kreirati tablice, jer već postoje..
$ python.py manage.py migrate app_name
Naredba koja zapiše promjene modela u bazu. (Kreira ih, modificira, briše…)
$ python.py manage.py schemamigration app_name --auto
Nakon što napravimo promjene u Modelu pokrećemo south koji detektira razlike i zapisuje ih.
WordPress navigacija iz specifičnih kategorija i stranica
General WordPress Template Tags
Validation
// Provjeri da li je vrijednost nešto smisleno, npr da li je array pun
if (typeof array[index] !== 'undefined' && array[index] !== null) { }
/* VALIDATION */
/*
* If the value is null and not required, we don't need to run through validation
*/
if (!field.value || field.value === '' || typeof field.value === 'undefined') {
return;
}
// Regex za validation !!
var ruleRegex = /^(.+)\[(.+)\]$/,
numericRegex = /^[0-9]+$/,
integerRegex = /^\-?[0-9]+$/,
decimalRegex = /^\-?[0-9]*\.?[0-9]+$/,
emailRegex = /^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,6}$/i,
alphaRegex = /^[a-z]+$/i,
alphaNumericRegex = /^[a-z0-9]+$/i,
alphaDashRegex = /^[a-z0-9_-]+$/i,
naturalRegex = /^[0-9]+$/i,
naturalNoZeroRegex = /^[1-9][0-9]*$/i,
ipRegex = /^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})$/i,
base64Regex = /[^a-zA-Z0-9\/\+=]/i;
// Koristi se: npr.: emailRegex.test('tvlahovi@gmail.com') -> Vraca true ili false
jQuery document ready
jQuery(document).ready(function($) {
// $() will work as an alias for jQuery() inside of this function
});
jQuery noConflict
// jQuery noConflict wrapper:
(function($) {
// $() will work here
$('.something').each( function(){
$(this).addClass( 'stuff' );
});
$.data( document.body, 'foo', 1337 );
})(jQuery);
Django WSGI Apache
Kreirati projekt.com.conf i prebaciti ga u /etc/httpd/conf.d
Konfiguracija:
Listen 8000 WSGISocketPrefix /var/run/wsgiServerName gandalf.local Alias /static /vault0/podaci/_razvoj/webapps/is42/static Alias /admin_media /home/myuser/Django-1.1/django/contrib/admin/media WSGIDaemonProcess is.dizajnzona42.com display-name=%{GROUP} python-path=/vault0/podaci/_razvoj/webapps/is42:/vault0/podaci/_razvoj/webapps/venv/is.dizajnzona42.com/lib/python2.7/site-packages WSGIProcessGroup is.dizajnzona42.com WSGIScriptAlias / /vault0/podaci/_razvoj/webapps/is42/is42/wsgi.py Order deny,allow Allow from all