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

ryenus

readlink_f() {
  local _dir _path="$1"
  [ -d "$_path" ] && _path=$(cd "$_path"; pwd -P)
  while [ -L "$_path" ]; do
    _dir=$(dirname "$_path")
    _path=$(readlink "$_path")
    [ -n "${_path##/*}" ] && _path="${_dir}/${_path}"
  done
  [ -f "$_path" ] && _path="$(cd "$(dirname "$_path")"; pwd -P)/${_path##*/}"
  echo "${_path%/}"

ryenus

: sd
#*TAG:39985 20:1973-09-17:0755:../d.proj-sd/sd
# Author: Brian Hiles <bsh@iname.com>
# Date: 1998/11/20
# Description: sed debugger with conditional spypoints
# License: copyright (c) 1996-2002
# Name: sd
# Project: @(#)sd-standalone.sh 3.3 2001-04 bsh@iname.com (Brian Hiles)
# Requires: echon(3S), expr(1), rm(1), sed(1)
# Thanks-to: Walter Briscoe <w.briscoe@ponl.com> for AIX compatibility

ryenus

#!/bin/bash

# install ncurses if not yet
# [ -z "$(brew info ncurses | grep 'Not installed')" ] || \
brew install ncurses

# setup $LDFLAGS and $CPPFLAGS
# source <(brew info ncurses | grep 'FLAGS' | sed -r -e 's/: +/=/' -e 's/^ +/export /')
export LDFLAGS=-L/usr/local/opt/ncurses/lib
export CPPFLAGS=-I/usr/local/opt/ncurses/include

ryenus

// http://johannesbrodwall.com/2018/05/15/a-wicked-java-trick-to-make-the-jvm-forget-to-check-exceptions/
// https://www.reddit.com/r/java/comments/8kz1tl/a_wicked_java_trick_to_make_the_jvm_forget_to/
// https://www.reddit.com/r/programming/comments/8kz1vf/a_wicked_java_trick_to_make_the_jvm_forget_to/

static RuntimeException softenException(Exception e) {
    return checkednessRemover(e);
}

static <T extends Exception> T checkednessRemover(Exception e) throws T {
    throw (T) e;

ryenus

# see https://www.thingy-ma-jig.co.uk/blog/22-09-2014/homebrew-list-packages-and-what-uses-them

brew list -1 | while read cask; do echo -ne "\x1B[1;34m $cask \x1B[0m"; brew uses $cask --installed | awk '{printf(" %s ", $0)}'; echo ""; done

ryenus

launchctl unload /Library/LaunchAgents/org.macosforge.xquartz.startx.plist
sudo launchctl unload /Library/LaunchDaemons/org.macosforge.xquartz.privileged_startx.plist
sudo rm -rf /opt/X11* /Library/Launch*/org.macosforge.xquartz.* /Applications/Utilities/XQuartz.app /etc/*paths.d/*XQuartz
sudo pkgutil --forget org.macosforge.xquartz.pkg

# Log out and log in

ryenus

#!/bin/sh

# to run this, use the following:
# curl https://matthewbauer.us/kernel-panic.sh | sh

cfile=$(mktemp).c
cat <<EOF >> $cfile
#include <unistd.h>
#include <sys/syscall.h>
#include <signal.h>

ryenus

##############
# pretty prompt and font colors
##############

# alter the default colors to make them a bit prettier
echo -en "\e]P0000000" #black
echo -en "\e]P1D75F5F" #darkred
echo -en "\e]P287AF5F" #darkgreen
echo -en "\e]P3D7AF87" #brown
echo -en "\e]P48787AF" #darkblue