08

Oct

2015

Kerberos Keytab File Creation on Ubuntu

October 8, 2015 jonny ubuntu

To create a kerberos keytab file on Ubuntu and with the kerberos packages installed (e.g. sudo apt-get install krb5-user ) root@jmcc02:~# ktutil ktutil: addent -password -p myusername@DOMAIN.TLD.COM -k 1 -e RC4-HMAC Password for... » More

05

Oct

2015

Apache: unable to open logs

October 5, 2015 jonny apache, linux

In the annals of "Everyday is a learning day". I have an Apache server hosting student websites, and the number of websites grew to over 700 within a day and Apache was complaining with error: unable to open logs It took a little while to narrow down... » More

21

Sep

2015

Customise the Unity Launcher from Command Line

September 21, 2015 jonny ubuntu

I am rolling out some Linux desktops, specifically Ubuntu, and I wanted to customize the icons available in the Unity Launcher. I wanted to remove the LibreOffce Calc and Impress icons and the darned 'Amazon' one, so: Create a new gschema override... » More

21

Sep

2015

Create Password Hashes From the Command Line

September 21, 2015 jonny ubuntu

I wanted to generate a password hash for use in the /etc/shadow file. My local Linux Mint (Ubuntu) Desktop already has mkpasswd available, your distribution may vary. mkpasswd -m SHA-512 This prompts for the password and will generate the... » More

21

Aug

2015

Locating Excessive Inode Usage

August 21, 2015 jonny linux

The command to list the directories using the most inodes is: find . -printf "%h\n" | cut -d/ -f-2 | sort | uniq -c | sort -rn However, I first needed to narrow down the directory under root that might be causing the problem: df -i showed that the... » More

18

Aug

2015

Powershell Script to Set Computer Name Based on DNS

August 18, 2015 jonny powershell

This Powershell script will use nslookup to query a DNS Server to get the hostname and use that result to set the computer name. If you use this you will need to amend as necessary including the address of the DNS Server (I have added the Google one... » More

30

Jul

2015

CentOS 7 as NAT Gateway for Private Network

July 30, 2015 jonny red hat centos

The scenario is a small private network connected via a switch and using 192.168.0.* addresses. One of the machines (let's call it RTR001) on the network has two network interface cards. One with an address on the 192.168.0.* network and another... » More

27

Jul

2015

Screen Annotation on Linux

July 27, 2015 jonny ubuntu

I was testing a HP EliteBook 2730p with Linux Mint 17.2. The laptop/netbook/tablet comes with a touchscreen and stylus. USB booting did not work for me but I was able to network/pxeboot an installation. When it came to drawing on the touchscreen I was... » More

12

Jun

2015

Migrating from SVN to GIT with Branches and Tags

June 12, 2015 jonny open source

I needed to convert a number of small subversion repositories to git so that they could be hosted publicly on GitHub and some hosted on our private GitLab service. I am adding a few notes here of what I did to help my future self. If it helps anyone else... » More

02

Jun

2015

Recording an Android Screencast on Linux

June 2, 2015 jonny android

I wanted to make a short video recording activity on an Android device while on a Linux Mint desktop. To do so I did the following: Install Java if you do not already have it installed. Install the Android debugger (if not already installed): sudo... » More