sarkis

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

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# Just place this file in your repo under the .github/workflows folder. 
# You set all of the secrets in the setting of the repo

name: Deploy to Testflight

# When a pull request is closed...
#   This is because this action commits back to the repository
#   so setting this on a push would cause an infinite loop of commits
#   unless you pragmatically check the contents of the repo or something

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import javax.net.ssl.SSLParameters;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import java.io.*;

/** Establish a SSL connection to a host and port, writes a byte and
 * prints the response. See
 * http://confluence.atlassian.com/display/JIRA/Connecting+to+SSL+services
 */
public class SSLPoke {

sarkis

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

sarkis

# Creates a "dummy" network interface
# we'll configure this interface with a link-local address
# See: https://www.freedesktop.org/software/systemd/man/systemd.netdev.html
##

[NetDev]
Name=dummy0
Kind=dummy

sarkis

systemd Service Unit for Traefik

Adapted from caddy systemd Service Unit

The provided file should work with systemd version 219 or later. It might work with earlier versions. The easiest way to check your systemd version is to run systemctl --version.

Instructions

We will assume the following:

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#This script will install the cloudformation helper work on Ubuntu 18.
#Some values are hard coded. Make sure to update where needed, or add to the parameters section.
#This would probably work on other distros, but I have not tested yet. Try it out. 
#Just make sure to change things like apt to yum if trying on another OS.
Parameters:
  EnvironmentSize:
    Type: String
    Default: t3.nano
    AllowedValues:
      - t3.nano

sarkis

How to Change Open Files Limit on OS X and macOS

This text is the section about OS X Yosemite (which also works for macOS Sierra) from https://docs.basho.com/riak/kv/2.1.4/using/performance/open-files-limit/#mac-os-x

The last time i visited this link it was dead (403), so I cloned it here from the latest snapshot in Archive.org's Wayback Machine https://web.archive.org/web/20170523131633/https://docs.basho.com/riak/kv/2.1.4/using/performance/open-files-limit/

Mac OS X

To check the current limits on your Mac OS X system, run:

sarkis

SWIG/_m2crypto.i:30: Error: Unable to find 'openssl/opensslv.h'

SWIG/_m2crypto.i:33: Error: Unable to find 'openssl/safestack.h'

SWIG/_evp.i:12: Error: Unable to find 'openssl/opensslconf.h'

SWIG/_ec.i:7: Error: Unable to find 'openssl/opensslconf.h'

error: command 'swig' failed with exit status 1

sarkis

Oh my zsh.

Install with curl

sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

Enabling Plugins (zsh-autosuggestions & zsh-syntax-highlighting)

• Download zsh-autosuggestions by