While working on a timekeeping module I encountered an issue that couldn't be resolved with the config/install & config/optional combinations. This module requires other modules to be installed first, but then some field group manipulation was needed to add the timekeeping tab into the tabs on the main page, luckily, there are tests on the field group module, so with a bit of looking through tests and experimenting, it ends up like this:

hook_install() code

`Had this problem earlier today. Could reconnect the mouse by removing the Bluetooth connection and re-doing it, but that should not be required.

Note: Updated slightly now rancher 2.0 is GA.

There are a couple of tricks, but it is possible to get the Rancher beta running in an lxc container with some tweaks. Firstly, the lxc profile needs to be tweaked:

lxc profile edit default

The defaults that worked for me were:

Sometimes, containers die, and you need to look inside to resolve, this one liner allows a quick way to adjust the 'container_name' and it will drop you right into the container so you can look around, then cleanup afterwards.

CTR="container_name"; docker commit $(docker ps -a | egrep " ${CTR}$" | awk '{ print $1 }') test; docker run --rm -ti --entrypoint=bash test; docker rmi test

Or maybe as a script, something like:

I've been developing for Drupal over the last 3 years using Ubuntu as my OS of choice, but changes mean that its time to reinstall Windows on the X1 Carbon.

After a Windows install and some(!) updates, things are ready for my setup which includes:

The systemd included in ubuntu zesty doesn't work nicely with dnsmasq by default, which is a pain if you are a developer and want to setup a local .test or similar domain. The way around this is to change the /etc/systemd/resolved.conf and uncomment/add a line like:
 

DNSStubListener=no

Then setup you dnsmasq as normal, probably by creating a file /etc/dnsmasq.d/test with the contents:

If you are used to using <ctrl>-<tab> and <ctrl>-<shift>-<tab> in firefox, chrome, etc, and want to have the same in gnome terminal, its a little tricky, but these commands should get things setup so that it works for you.

gsettings set org.gnome.Terminal.Legacy.Keybindings:/org/gnome/terminal/legacy/keybindings/ prev-tab '<Primary><Shift>Tab'

gsettings set org.gnome.Terminal.Legacy.Keybindings:/org/gnome/terminal/legacy/keybindings/ next-tab '<Primary>Tab'

If you are wanting to use <alt>-<space> as the key for the excellent Ulauncher with Ubuntu, there are a couple of tweaks that you need to do:

1. Ensure that CompizConfig Settings Manager is installed:

apt-get install compizconfig-settings-manager

2. Start the CompizConfig Settings Manager

Go to General, General options, Key bindings and disable Window Menu which is assigned <alt>-<space> by default.

When using a USB HDD (probably a stick as well), there can be large delays when using a Ubuntu machine while waiting for data to be synced to the disk. After much googling, trying different filesystems and tweaking mount options, the solution that worked was:

echo $((16*1024*1024)) > /proc/sys/vm/dirty_background_bytes
echo $((48*1024*1024)) > /proc/sys/vm/dirty_bytes

Which i found here: http://unix.stackexchange.com/questions/107703/why-is-my-pc-freezing-while-im-copying-a-file-to-a-pendrive/107722#107722 http://lwn.net/Articles/572911/

I needed to find all the email that a user sent with only the postfix mail.log. This simple script does that. There is probably an easier way :-)

#!/bin/bash USERNAME=$1 for i in `grep -A2 $USERNAME mail.log | \
grep message-id | cut -d'<' -f2 | cut -d'>' -f1`; \
do grep "$i" /var/log/mail.log | grep "to=" | awk '{ print $7 }' | \
cut -d'<' -f2 | cut -d'>' -f1; done | sort | uniq -c