mciverza

#EXTM3U

#EXTINF:-1,Digitally Imported - Ambient
http://pub1.diforfree.org:8000/di_ambient_hi

#EXTINF:-1,Digitally Imported - Big Room House
http://pub1.diforfree.org:8000/di_bigroomhouse_hi

#EXTINF:-1,Digitally Imported - Breaks
http://pub1.diforfree.org:8000/di_breaks_hi

mciverza

Keybase proof

I hereby claim:

• I am mciverza on github.
• I am maclsd (https://keybase.io/maclsd) on keybase.
• I have a public key ASDZokDPdQ-CMuF0R0S8a7tJET7tFePTvS2NqnJ1LZJktgo

To claim this, I am signing this object:

mciverza

sudo su - zimbra

# list all accounts and print out account name and aliases
for i in `zmprov -l gaa` ; do zmprov ga $i zimbraMailAlias ; done

# list all distribution lists and any members and/or aliases
for i in `zmprov gadl` ; do zmprov gdl $i zimbraMailAlias zimbraMailForwardingAddress ; done

mciverza

sparse checkout in git

Downloading only part of a git repo, e.g one subfolder, is called a sparse checkout, or sparse clone

The steps to do a sparse checkout are as follows:

• Start with an empty git repository: git init <repo_name>
• Enter that directory: cd <repo_name>
• Configure the remote repo address: git remote add -f origin <url_of_remote_repo>
• Configure git to enable sparse: git config core.sparsecheckout true

mciverza

mkdir temp && cd temp

# for linux 'amd64' architecture install those packages:
sudo apt-get install libx11-6:i386 libpam0g:i386 libstdc++5:i386 lib32z1 lib32ncurses5 lib32bz2-1.0

wget https://vpnportal.aktifbank.com.tr/SNX/INSTALL/snx_install.sh
sudo ./snx_install.sh

cd .. && rm -rf temp/

mciverza

// modify these configurations to work with your environment
var server = "https://sso.example.com";
var realm = "realm";
var resource = "client";
var username = "username";
var password = "url encoded password";

var url = `${server}/auth/realms/${realm}/protocol/openid-connect/token`;
var data = `grant_type=password&client_id=${resource}&username=${username}&password=${password}`;

mciverza

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

mciverza

Building OpenConnect 7 on Ubuntu 14 (trusty) and 15 (vivid)

The steps in this guide are available as an autobuild shell script

Why?

Because the OpenConnect package from Ubuntu is a bit outdated, and if you have a recent AnyConnect server, you need a newer OpenConnect to play with it.

Why this guide uses OpenSSL instead of GnuTLS

mciverza

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

mciverza

Getting a shell on each node

I run several K8S cluster on EKS and by default do not setup inbound SSH to the nodes. Sometimes I need to get into each node to check things or run a one-off tool.

Rather than update my terraform, rebuild the launch templates and redeploy brand new nodes, I decided to use kubernetes to access each node directly.

Alternative option

https://github.com/alexei-led/nsenter