obatiuk

# Run the last command as root
sudo !!
# Serve current directory tree at http://$HOSTNAME:8000/
python -m SimpleHTTPServer
# Save a file you edited in vim without the needed permissions
:w !sudo tee %
# change to the previous working directory
cd -
# Runs previous command but replacing
^foo^bar

obatiuk

import java.util.concurrent.Callable;

public class Unchecked {

    public static <T> T unchecked(Callable<T> callable) {
        try {
            return callable.call();
        } catch (Exception ex) {
            throw new RuntimeException(ex.getMessage(), ex);
        }

obatiuk

YubiKey 4 series GPG and SSH setup guide

Written for fairly adept technical users, preferably of Debian GNU/Linux, not for absolute beginners.

You'll probably be working with a single smartcard, so you'll want only one primary key (1. Sign & Certify) and two associated subkeys (2. Encrypt, 3. Authenticate). I've published a Bash function which automates this slightly special key generation process.

obatiuk

Password-store keeps your passwords (or any other sensitive information) saved in GnuPG encrypted files organized in ~/.password-store. For more information about GPG, consult the GNU Privacy Handbook.

Getting started

To get started, install pass and generate a keypair.

$ brew install pass
$ gpg --gen-key
$ gpg --list-keys

obatiuk

#!/bin/sh

[ -n "$(echo $@ | grep "\-debug")" ] && set -x

date=$(date +%Y-%m-%d-T%H-%M-%S)
host=$(cat /proc/sys/kernel/hostname)
backup_dir="/tmp/${host}-${date}"

mkdir -p ${backup_dir}

obatiuk

task dependencyReport {
    doLast {
        def file = new File("project-dependencies.dot")
        file.delete()
        file << "digraph {\n"
        file << "splines=ortho\n"
        rootProject.childProjects.each { item ->
            def from = item.value
            from.configurations.compile.dependencies
                    .matching { it in ProjectDependency }

obatiuk

#!/bin/sh

# Source: https://stackoverflow.com/questions/9683279/make-the-current-commit-the-only-initial-commit-in-a-git-repository/13102849#13102849

git checkout --orphan newBranch
git add -A  # Add all files and commit them
git commit
git branch -D master  # Deletes the master branch
git branch -m master  # Rename the current branch to master
git push -f origin master  # Force push master branch to github

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[ -f /usr/local/etc/bash_completion ] && . /usr/local/etc/bash_completion

export PATH=$PATH:$HOME/tools/git-tools
export JAVA_HOME=$(/usr/libexec/java_home)
export GREP_OPTIONS='--color=always'
export GREP_COLOR='1;35;40'
export CLICOLOR=1

alias ll='ls -la'
alias fixcam='sudo pkill "VDCAssistant"'

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# version #1: enables xtrace if `--debug` argument is supplied
[ -n "$(echo $@ | grep "\--debug")" ] && set -x

# version #2: sets debug variable to 'true' if `--debug` argument is supplied or `xtrace` option is set
debug=false && [ -n "$(echo $@ | grep "\--debug")" ] || [ -n "$(set | grep xtrace)" ] && debug=true

obatiuk

import static java.lang.Math.floor;
import static java.util.function.Function.identity;
import static java.util.stream.Collectors.groupingBy;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.mapping;
import static java.util.stream.Collectors.summingInt;
import static java.util.stream.Collectors.toMap;
import static java.util.stream.IntStream.range;

import java.util.DoubleSummaryStatistics;