0x77 SYMFONY3 – REST API

How to create a Symfony Rest API from scratch

symfony php

0x76 LINUX - EMERGENCY REBOOT

If you find yourself in this situation (and I hope you won’t!), you have some options to get your way with a misbehaving server remotely. You can force an immediate reboot with the following:

echo 1 > /proc/sys/kernel/sysrq 
echo b > /proc/sysrq-trigger

WHOA THERE! This is pretty much the same as pressing the reset button on the server (if equipped). No daemons will be shut down gracefully, no filesystem sync will occur, and you may get the wrath of a fsck (or worse, a non-booting server) upon reboot.

linux admin

0x75 TCPDUMP - GREP 80 REQ

sudo tcpdump -A -s 10240 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | egrep --line-buffered "^........(GET |HTTP\/|POST |HEAD )|^[A-Za-z0-9-]+: " | sed -r 's/^........(GET |HTTP\/|POST |HEAD )/\n\1/g'

admin

0x74 SYMFONY - ENTITY VALIDATION

app/config/config.yml

validation:      { enabled: true, enable_annotations: false }

Bundle/Resources/config/validation.yml

Bundle\Entity\Post:
    properties:
        name:
            - NotBlank: ~
        text:
            - NotBlank: ~

Controller

$entity = new Entity();
$validator = $this->get('validator');
$errors = $validator->validate($entity);
if (count($errors)>0) {
} else {
}

symfony php

0x6f INSTALL CX_ORACLE ON CENTOS 7

Download and install oracle client from Oracle

yum install libaio
rpm -Uvh oracle-instantclient12.1-basic-12.1.0.2.0-1.x86_64.rpm
rpm -Uvh oracle-instantclient12.1-devel-12.1.0.2.0-1.x86_64.rpm
rpm -Uvh oracle-instantclient12.1-sqlplus-12.1.0.2.0-1.x86_64.rpm

Add Oracle client to library path

echo "/usr/lib/oracle/12.1/client64/lib" >/etc/ld.so.conf.d/oracle.conf
ldconfig

install epel repo via yum extra

yum install epel-release

Install additional

yum install gcc python-pip.noarch python-devel

Install cx_Oracle via pip

pip install cx_Oracle

linux oracle python centos

0x73 HTTP-REQUEST LOAD TIMING WITH CURL

for i in {1..3};do curl -s -w "%{time_total}\n" -o /dev/null http://www.google.com/; done

0x72 INSTALL VNC-SERVER, UBUNTU

Загрузить пакеты XFCE и TightVNC можно из программного репозитория Ubuntu с помощью apt:

sudo apt-get update
sudo apt-get install xfce4 xfce4-goodies tightvncserver

Для завершения начальной настройки сервера VNC используйте команду vncserver, которая создаст безопасный пароль:

vncserver

Continue reading →

linux

0x67 UBUNTU - REMOVE OLD KERNELS

If your system is operating without error, you should be able to remove old kernels with a simple autoremove command in shell:

sudo apt-get autoremove --purge

Alternatively, and to be able to remove even manually installed kernels, you could use:

sudo purge-old-kernels

Source: https://help.ubuntu.com/community/Lubuntu/Documentation/RemoveOldKernels

linux ubuntu

0x6e HARRY POTTER THEME

E -----0----3-2-0---7--5----2--0---3--2------2-----
B --0-------------------------------------3------0-

E -----0----3-2-0---7--10---9-8---5---8-7-6---2--7-
B --0----------------------------------------------

E -3--7---3--7---3--8--7--6----2--3---8-7-6---2--7—

E -3--7---3--7---3--10--9–-8---5---8-7-6---5--2------0-
B ------------------------------------------------0----

0x6d ULTIMATE SYMFONY SERIES

http://gnugat.github.io/tags/ultimate%20symfony%20series/

symfony