ryenus

Podman with docker-compose on MacOS.

Podman an alternative to Docker Desktop on MacOS

Getting podman installed and started is super easy.
Just use brew to install it.

> brew install podman

Now since podman uses a VM just like the Docker Client on MacOS we need to initialize that and start it.

ryenus

Latency Comparison Numbers (~2012)
----------------------------------
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

ryenus

How to disable kubernetes without Docker UI

As workaround to disable kubernetes without the UI, you can edit "~/Library/Group Containers/group.com.docker/settings.json" and set the kubernetesEnabled property to false, then quit and relaunch the Docker.

Source: docker/for-mac#2541 (comment)

ryenus

#!/bin/sh

export CATALINA_HOME="$(brew --prefix tomcat)/libexec"
export CATALINA_BASE="${CATALINA_BASE:-$(brew --prefix)/var/tomcat}"

catalina_init() {
  if [ ! -e "$CATALINA_BASE/conf" ]; then
    mkdir -p "$CATALINA_BASE"
    cp -r "$CATALINA_HOME/conf" "$CATALINA_BASE/"
  fi

ryenus

# In the docker image amazoncorretto:11, with `yum install jsvc` we get jsvc 1.0.3
# But jsvc 1.0.3 does NOT support Java 9+
# Fortunately there's a workaround

sudo ln -s /usr/lib/jvm/java/lib/ /usr/lib/jvm/java/lib/amd64

ryenus

The default ephemeral port range on macOS/OSX is 49152-65535, which is only 16,383 ports:

$ sysctl -a | grep portrange
net.inet.ip.portrange.lowfirst: 1023
net.inet.ip.portrange.lowlast: 600
net.inet.ip.portrange.first: 49152
net.inet.ip.portrange.last: 65535
net.inet.ip.portrange.hifirst: 49152
net.inet.ip.portrange.hilast: 65535

ryenus

/***

Inspired by http://choly.ca/post/typescript-json/ , except this is only for parsing (not stringifying).

If you use this, I'd appreciate some credit and some feedback ... but neither are required.
Copyright license (Apache) is at the bottom.

NOTE THIS WILL PROBABLY NOT WORK if your uglifier changes constructor/class names.  This is a pretty common thing, and it makes me sad.

The main problem this solves is that JSON.stringify returns plain old JS objects, not TS instances.

ryenus

#Sat Jun 22 04:07:24 CST 2019
#based on http://www.eclipsecolorthemes.org/?view=theme&id=44675, with brighter comment
\!/=
/instance/org.eclipse.jdt.ui/org.eclipse.jdt.ui.formatterprofiles.version=16
/instance/org.codehaus.groovy.eclipse.ui/groovy.editor.groovyDoc.keyword.enabled=true
/instance/org.codehaus.groovy.eclipse.ui/groovy.editor.groovyDoc.link.enabled=true
/instance/org.codehaus.groovy.eclipse.ui/groovy.editor.groovyDoc.tag.enabled=true
/instance/org.eclipse.ui.editors/AbstractTextEditor.Color.SelectionForeground.SystemDefault=false
/instance/org.eclipse.ui.editors/AbstractTextEditor.Color.SelectionBackground.SystemDefault=false
/instance/org.eclipse.ui.editors/AbstractTextEditor.Color.Background.SystemDefault=false

ryenus

# show, list or set java version for current shell
# usage: jv; jv -l; or jv 8
jv() {
  local d v="$1"
  if [ $# -ge 1 ]; then
    [ -z "${v#-[lLV]}" ] && { /usr/libexec/java_home -V; return; }
    [ -z "${v##-*}" ] && { /usr/libexec/java_home "$@"; return; }
    [ ${#v} -eq 1 -a -z "${v#[0-8]}" ] && v="1.$v"
    [ -n "$v" ] && d=$(/usr/libexec/java_home -v "$v") && \
    export JAVA_HOME="$d"

ryenus

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname