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Run mdadm - this command is used to manage and monitor software RAID devices in linux.

mdadm --detail /dev/md0 or md<N>

mount -t ext4 /dev/md0 /share/MD0_DATA

Check disks

mdadm --examine /dev/sdd3

Faster Rails tests

Feedback loop speed in one of the biggest contributing factors to overall development time. The faster you get results, the faster you can move on to other things. A fast enough test suite is therefore critical to teams' success, and is worth investing some time at the beginning to save in the long run.

Below is a list of techniques for speeding up a Rails test suite. It is not comprehensive, but should definitely provide some quick wins. This list of techniques assumes you're using minitest, but most everything should translate over to rspec by simply replacing test/test_helper.rb with spec/spec_helper.rb.

@mtsmfm
mtsmfm / Dockerfile
Created October 9, 2016 05:31
ruby 2.4-preview 2 dockerfile
FROM buildpack-deps:jessie
ENV RUBY_MAJOR 2.4
ENV RUBY_VERSION 2.4.0-preview2
ENV RUBY_DOWNLOAD_SHA256 fec544836428aada2dc593a8cc42ce330798a805e49ecb807a0e21b386fd0b14
ENV RUBYGEMS_VERSION 2.6.7
# skip installing gem documentation
RUN echo 'install: --no-document\nupdate: --no-document' >> "$HOME/.gemrc"
@nesquena
nesquena / Contact.java
Last active January 15, 2023 13:03 — forked from rogerhu/Contact.java
Endless Scrolling with RecyclerVIew
package codepath.com.recyclerviewfun;
import java.util.ArrayList;
import java.util.List;
public class Contact {
private String mName;
private boolean mOnline;
public Contact(String name, boolean online) {
#!/bin/bash
function docker_run_shell {
NAME=$1
DOCKERFILE=$2
# docker needs a few libraries, but not all - essential libs here
BIND_LIBS=`ldd /usr/bin/docker | grep /lib/ | awk '{print $3}' | egrep '(apparmor|libseccomp|libdevmap|libsystemd-journal|libcgmanager.so.0|libnih.so.1|libnih-dbus.so.1|libdbus-1.so.3|libgcrypt.so.11)'`
ARGS=""
for LIB in $BIND_LIBS; do
ARGS="$ARGS -v $LIB:$LIB:ro"
@cesarferreira
cesarferreira / RxJava.md
Last active February 2, 2022 07:28
Party tricks with RxJava, RxAndroid & Retrolambda

View Click

Instead of the verbose setOnClickListener:

RxView.clicks(submitButton).subscribe(o -> log("submit button clicked!"));

Filter even numbers

Observable
    .just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
@chrismdp
chrismdp / s3.sh
Last active March 5, 2024 12:57
Uploading to S3 in 18 lines of Shell (used to upload builds for http://soltrader.net)
# You don't need Fog in Ruby or some other library to upload to S3 -- shell works perfectly fine
# This is how I upload my new Sol Trader builds (http://soltrader.net)
# Based on a modified script from here: http://tmont.com/blargh/2014/1/uploading-to-s3-in-bash
S3KEY="my aws key"
S3SECRET="my aws secret" # pass these in
function putS3
{
path=$1
@seanKenkeremath
seanKenkeremath / Android Lollipop Widget Tinting Guide
Last active November 17, 2023 12:40
How base colors in Lollipop apply to different UI elements
Unless specified otherwise, all of the below tinting applies to both Lollipop and pre-Lollipop using AppCompat v21. To use the support version of these attributes, remove the android namespace. For instance, "android:colorControlNormal" becomes "colorControlNormal". These attributes will be propagated to their corresponding attributes within the android namespace for devices running Lollipop. Any exceptions to this will be noted by including the "android:" prefix.
All Clickable Views:
-----------
* ripple effect (Lollipop only) -- "colorControlHighlight"
Status Bar:
------------
* background (Lollipop only) - "colorPrimaryDark"
public void transformPage(View view, float position) {
int pageWidth = view.getWidth();
if (position < -1) { // [-Infinity,-1)
// This page is way off-screen to the left.
view.setAlpha(0);
} else if (position <= 1) { // [-1,1]
@wbroek
wbroek / genymotionwithplay.txt
Last active February 12, 2024 03:22
Genymotion with Google Play Services for ARM
NOTE: Easier way is the X86 way, described on https://www.genymotion.com/help/desktop/faq/#google-play-services
Download the following ZIPs:
ARM Translation Installer v1.1 (http://www.mirrorcreator.com/files/0ZIO8PME/Genymotion-ARM-Translation_v1.1.zip_links)
Download the correct GApps for your Android version:
Google Apps for Android 6.0 (https://www.androidfilehost.com/?fid=24052804347835438 - benzo-gapps-M-20151011-signed-chroma-r3.zip)
Google Apps for Android 5.1 (https://www.androidfilehost.com/?fid=96042739161891406 - gapps-L-4-21-15.zip)
Google Apps for Android 5.0 (https://www.androidfilehost.com/?fid=95784891001614559 - gapps-lp-20141109-signed.zip)