Find out what tags you have locally:

david$ git tag
v1.0.0
v1.0.1
v1.1.0
v1.1.1
v1.1.2
v1.2.0

Delete them all:

david$ git tag -dv1.0.0 v1.0.1 v1.1.0 v1.1.1 v1.1.2 v1.2.0

Push all those deletes to the remote system:

david$ git push origin :refs/tags/v1.0.0
david$ git push origin :refs/tags/v1.0.1
david$ git push origin :refs/tags/v1.1.0
david$ git push origin :refs/tags/v1.1.1
david$ git push origin :refs/tags/v1.1.2
david$ git push origin :refs/tags/v1.2.0

That’s it. Destruction complete.

The post Deleting remote git tags appeared first on David Simpson.

On OSX, it’s easy to install using Homebrew:

brew install ffmpeg

If you have MP4 files, these could be losslessly concatenated by first transcoding them to mpeg transport streams.
Source – https://trac.ffmpeg.org/wiki/Concatenate

Say we have 2 mp4 files to concatenate or join together, first we transcode each of these into an intermediate format:

ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts

After that we can concatenate these together using the following:

ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4

For more file, just piple separate the additional files here: "concat:intermediate1.ts|intermediate2.ts"

The post How to join multiple mp4 files together using ffmpeg on OS X appeared first on David Simpson.

The full code examples from the presentation are hosted on GitHub here:
https://github.com/dvdsmpsn/ibm-connect-2016-examples/

The post IBM Connect 2016: 1402 – Getting Technically Cozy with IBM Connections Cloud APIs and App Dev appeared first on David Simpson.

I use an OpenWRT router (running a VPN to add a little bit of privacy), so I could adapt the article to run on the router rather than an attached Raspberry Pi.

Here are the steps adapted for OpenWRT…

OpenWRT uses opkg rather than apt-get, so that is used throughout as a replacement.

Install pip — a packaging manager for Python and the speedtest-cli package from the pip repositories.

opkg install python-pip
pip install speedtest-cli

Test out the installed package:

root@OpenWrt:~# speedtest-cli
Retrieving speedtest.net configuration...
Retrieving speedtest.net server list...
Testing from Virgin Media (x.x.x.x)...
Selecting best server based on latency...
Hosted by Virgin Media (Nottingham) [2.68 km]: 20.29 ms
Testing download speed........................................
Download: 156.39 Mbit/s
Testing upload speed..................................................
Upload: 9.84 Mbit/s

So far so good.

Next, we need to run the following script. I’ve saved it at /root/bin/speedtest-ifttt.sh

Update log=/tmp/$user/speedtest-csv.log to log=/$user/tmp/speedtest-csv.log

Add the key to line 82

secret_key="SECRET_KEY"

OOTB, OpenWRT doesn’t have bash or curl, so install that too:

opkg install bash curl

Make a directory to save the temperary file:

mkdir ~/tmp

Add execute permission:

chmox +x /root/bin/speedtest-ifttt.sh

Now, run the file once & see if it creates a Google Sheet and saves details to the sheet

/root/bin/speedtest-ifttt.sh

If all is good, add this to the cron job and sit back:

crontab -e
15,45 * * * * /root/bin/speedtest-ifttt.sh

Right now, I’m measuring the speed every 30 minutes at 15, 45 mins past the hour. This can be changed to be run more frequently, as required.

At this point, I created a chart in the Sheet so that I could view the data being collected.

Here are the results so far:

The post Push speed test results from OpenWRT to Google Sheets appeared first on David Simpson.

<web-resource name="editor-scripts" key="editor-scripts">
  <resource name="editor-templates.js" type="download" 
    location="assets/js/editor-templates.js" />
  <!-- // TODO: Check whether I need a context here -->
</web-resource>

<web-resource name="editor-styles" key="editor-styles">
  <resource name="css/confluence-editor.css" type="download" 
    location="assets/css/confluence-editor.css"/>
  
  <dependency>com.atlassian.confluence.plugins:confluence-editor-plugins</dependency>
  <dependency>${project.groupId}.${project.artifactId}:editor-scripts</dependency>
  <dependency>com.atlassian.auiplugin:ajs</dependency>
  <context>editor</context>
  <!-- // TODO: Check whether I need all the dependencies here -->
</web-resource>

My confluence-editor.css styles just wouldn’t be accepted. Javascript injection worked just fine though. Perhaps I could use JS to inject my styles?

Yup. Adding this to my editor-templates.js file worked a treat:

var editorCss = AJS.params.staticResourceUrlPrefix 
  + '/download/resources/me.davidsimpson.confluence.addon.awesome-addon'
  + ':editor-styles/css/confluence-editor.css';

if (AJS.params.isDevMode) {
  editorCss = editorCss + '?_=' + Date.now();
}

$('#wysiwygTextarea_ifr').contents().find('head').append(
  '<link type="text/css" rel="stylesheet" href="' + editorCss + '" media="all">'
);

Note the cache busting timestamp for local development.

The post Adding styles to the Confluence editor appeared first on David Simpson.

Information on this seemed somewhat sketchy until I spotted this page on Multicast Addresses

ALL-SYSTEMS.MCAST.NET
224.0.0.1 All systems on the local subnet.

What? All the machines on my local network? Really?

Pinging it confirmed this:

$ ping all-systems.mcast.net
PING all-systems.mcast.net (224.0.0.1): 56 data bytes
64 bytes from 192.168.1.136: icmp_seq=0 ttl=64 time=0.103 ms
64 bytes from 192.168.1.153: icmp_seq=0 ttl=64 time=14.788 ms
64 bytes from 192.168.1.120: icmp_seq=0 ttl=64 time=239.376 ms
64 bytes from 192.168.1.162: icmp_seq=0 ttl=64 time=256.191 ms
...
64 bytes from 192.168.1.119: icmp_seq=1 ttl=64 time=50.762 ms

The machine accessing all-systems.mcast.net is running a DLNA server, so it appears to be broadcasting its presence to all the machines on the local network. Panic over.

The post Why is my machine contacting all-systems.mcast.net? appeared first on David Simpson.

The WRT1900ACS page on the OpenWRT wiki was a little vague about which version of the firmware to install, but stated that the router had Marvell Armada 385 & Shelby hardware, so I used the openwrt-mvebu-armada-385-linksys-shelby-squashfs-factory.img image to flash the firmware. This worked, so I’ve document it here for others.

This merely documents what worked for me. If you brick your router following these instructions, I’m sorry, but you do so at your own risk.

Installing OpenWRT

Download the OpenWRT firmware: openwrt-mvebu-armada-385-linksys-shelby-squashfs-factory.img

Connect to the router with the supplied network cable.

Login to http://192.168.1.1/. The password is admin. Don’t use the setup wizard. Specify manual setup.

Browse to Connectivity and in Router Firmware Update click on Manual > Select File

Select the previously downloaded openwrt-mvebu-armada-385-linksys-shelby-squashfs-factor.img, then click on Start.

Click on Yes in the Unrecognized file name modal:

Click on Yes in the Update firmware modal:

Click on OK in the Reboot Router modal:

Almost immediately, you’ll be able to browse to http://192.168.1.1 and see that OpenWrt has been installed:

It should ask you to set a password at this point. (I forgot to get a screenshot of that).

By default, the wifi is disabled, but it’s really straightforward to enable and secure in the admin UI.

You’ll also be able to ssh into your router. This is where the fun begins…

Secure your internet access with a VPN

The next sensible step is to setup your VPN connection. I use Private Internet Access as my VPN provider, so my VPN setup is tailored to PIA. This is incredibly easy to configure, thanks to previous work by Logan Marchione and Andrew Brereton.

Follow the script and you’ll be done in a couple of minutes.

Reboot nightly

Sometimes it’s best to just restart regularly. Here’s how:

Start & enable cron as it’s not enabled by default.

/etc/init.d/cron start
/etc/init.d/cron enable

Add this line to the crontab to reboot every day at 3am:

0 3 * * * * reboot

Save your eyes, enable the Bootstrap theme

One last thing, go into System | System | Language and Styles and enable the Bootstrap theme. It means that your admin UI is no longer an eyesore.

It turns this:

Into this:

The post Installing OpenWRT on a Linksys WRT1900ACS appeared first on David Simpson.

For my gadgets, I separate out all the XML, HTML, JavaScript and CSS from the atlassian-plugin.xml.

The setup is initially more complex, but once you’ve got this correct, the separation of concerns is much nicer than mangling everything into the atlassian-plugin.xml file.

The relative paths on the other hand do indeed look crazy.

My file system looks like this:

- resources/
    - gadgets/
        - css/
            - example.css
        - html/
            - example.html
        - js/
            - example.js
        - examaple-gadget.xml
    - atlassian-plugin.xml

In /resources/atlassian-plugin.xml:

<!-- add our web resources -->
<web-resource key="${project.artifactId}-resources" name="${project.artifactId} Web Resources">
  <dependency>com.atlassian.auiplugin:ajs</dependency>
  <resource type="download" name="example-gadgets/" location="/gadgets"/>
  <context>immersive-for-connections</context>
</web-resource>

<gadget name="Example JIRA Gadget" i18n-name-key="example-jira-gadget.name" 
        key="example-jira-gadget" location="gadgets/example-gadget.xml">
  <!--
    hosted at: 
    /rest/gadgets/1.0/g/${project.groupId}.${project.artifactId}:example-gadgets/gadgets/example-gadget.xml
  -->
  <description key="jira-query-gadget.description">The JIRA Query Gadget Plugin</description>
</gadget>

In /resources/gadgets/example-gadget.xml (replace ${project.artifactId} & ${project.groupId} with the correct value):

<?xml version="1.0" encoding="UTF-8" ?>
<Module>
  ...
  <Content type="html" view="example.view" preferred_width="100%" 
    href="../../../../../../download/resources/${project.groupId}.${project.artifactId}:${project.artifactId}-resources/gadgets/html/example.html"/>
</Module>

In /resources/gadgets/html/example.html (replace ${project.artifactId} & ${project.groupId} with the correct value):

<!DOCTYPE html>
<html>
  <head>
    ...
    <link href="../../../../../../download/resources/${project.groupId}.${project.artifactId}:${project.artifactId}-resources/gadgets/css/example.css" 
      type="text/css" rel="stylesheet">
    <script src="../../../../../../download/resources/${project.groupId}.${project.artifactId}:${project.artifactId}-resources/gadgets/js/example.js">
    </script>
  </head>
  <body>
    ...
  </body>
</html>

From this somewhat excessing starting point, you’ll have content, behaviour and styles completely separated. If that floats your boat, then you’ll be happy.

The post Separation of concerns for JIRA gadgets appeared first on David Simpson.

No matter. I forked Gister: GitHub Gist Macro for Confluence, changed some code and few minutes later got this:

It seems to work nicely.

• If you want it, get it here
• If it doesn’t work, post an issue
• If you like it, leave a comment & say so. Or buy me a pot of tea:
  
  

The post A JSFiddle Macro for Atlassian Confluence appeared first on David Simpson.

If you’re comfortable with using the Terminal, try this:

First, look at the partition table by running this command:

diskutil list

You should see something like this:

/dev/disk1
#:                       TYPE NAME                    SIZE       IDENTIFIER
0:      GUID_partition_scheme                        *16.0 GB    disk1
1:                        EFI                         209.7 MB   disk1s1
2:                  Apple_HFS Example                 15.7 GB    disk1s2

The partition we want to change is /dev/disk1.

We want to change the device to an MBR-formatted FAT32 partition.
To do that, run this command:

sudo diskutil eraseDisk FAT32 NAME< MBRFormat /dev/disk1

where NAME is the name you want to give to the disk.

As mentioned in the comments, you cannot put square brackets into the volume’s name lest things mess up. To avoid having everything fail, simply ensure that there are no square brackets in the FAT32 volume’s new name.

The post How to format a disk to FAT32 on a Mac / OS X appeared first on David Simpson.