andrealmar

Pure vs impure and why should I care?

Some of the most important advancements in programming came from adding restrictions to the way we program. Famous article by Edsger Dijkstra Go To Statement Considered Harmful shows how introducing one statement into programming language breaks many nice properties of that language. goto gives us freedom and solves couple of simple problems like breaking from nested loops easily, but it can make programs very hard to understand. This happens, because we cannot look at two pieces of code in spearation. The execution can jump to some other place in code or even worse: it can jump from other piece of code to here and We need to keep that in mind.

andrealmar

In order to work the Bose QC35 Headset Bluetooth do the following:

- sudo pacman -Syu  pulseaudio-alsa pulseaudio-bluetooth bluez bluez-libs bluez-utils
- turn off bluetooth from your computer
- sudo btmgmt ssp of
- gpasswd -a YOUR_USER lp

andrealmar

Some books I've been studying to improve my skills as a SRE/System Engineer.

• Site Reliability Engineering: How Google Runs Production Systems
• Operating Systems
• Operating Systems: Three Easy Pieces
• How Linux Works, 2nd Edition
• Continuous Delivery: Reliable Software Releases through Build, Test, and Deployment Automation
• [Systems Performance: Enterprise and the Cloud](https://www.amazon.com/gp/product/0133390098?ie=UTF8&tag=deirdrestraug-20&linkCode=as2&camp=1789&creative=390957&creativ

andrealmar

Keybase proof

I hereby claim:

• I am andrealmar on github.
• I am andrealmar (https://keybase.io/andrealmar) on keybase.
• I have a public key ASBVrFj0dzmy_-oL1agIHIuNoRm49y8T-1-kDTGc0yqVSQo

To claim this, I am signing this object:

andrealmar

du -sh /var/* | sort -n

andrealmar

# Author: Andre Almar - andre@y7mail.com

import os, subprocess
from subprocess import call

print 'Validando FileSystem /webaplic'
if os.path.isdir('/webaplic'):
    print "Diretorio /webaplic ja existe"
else:
    try:

andrealmar

# TO RUN the WLST script just type the command below:
#  /webtools/oracle/plat1200_1/middleware/oracle_common/common/bin/wlst.sh weblogic_ad_users.py

# Author: ANDRE ALMAR

servidor = raw_input('Digite o servidor: ')
porta = raw_input('Digite a porta: ')
usuario = raw_input('Digite o usuario: ')
password = raw_input('Digite o password: ')
roles = ['Deployer', 'Monitor', 'Operator', 'IntegrationDeployer', 'IntegrationMonitor', 'IntegrationOperator']

andrealmar

Então mudaremos, na própria linha de comando do vi, a palavra "amamu" pelo correto, amamos.
Sendo key-sensitive a utilização deste comando, execute:

:%s/amamu/amamos/g

andrealmar

Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

andrealmar

-p # port binding eg.HOST:CONTAINER - 5433:5432
-e # env variabls

# Run a container mounting an outside volume inside the container
docker run -it -v /Users/andrealmar/primeiro_dockerfile/:/volume alpine

# Inspect mounted volume of a Container
docker inspect -f {{.Mounts}} 8a73d606bd9c

# creating and executing a PostgreSQL container using another container as a Volume