Bashed Up Bits

Machine Specs: Mac Mini (Mid 2011), Macmini5,2 Core i7 16 GB RAM (2x8 GB) AMD Radeon HD 6630M 256MB 27-inch Apple Thunderbolt Display 512 GB SSD Running macOS 10.13 High Sierra Caution: This process can result in data loss. If you have personal data on the Mac Mini before starting, back it up first. Twice! (One is none. Two is one. ~ U.S. Navy Seal saying).  Also, mistyping in the parts of this process may brick your Mac Mini. You have been warned. If in doubt, stop working and do research on Google until you understand what's going on in the step. If you find an error, please leave a comment. I will update. Note: This is process I figured out in lieu of booting the Ubuntu install with EFI via refind. Via the refind boot method, I would constantly get: 10:39:07 kernel: Couldn't get size: 0x800000000000000e 10:39:07 kernel: MODSIGN: Couldn't get UEFI db list 10:39:07 kernel: Couldn't get size: 0x800000000000000e The error seems to be relate...

A Brief Primer on LEAN © 2014, Adam S. Keck Based on: Chasing The Rabbit by Steven Spear Toyota Production System: Beyond Large-Scale Production by Taiichi Ohno Understanding A3 Thinking: A Critical Component of Toyota's PDCA Management System by Durward K. Sobek II and Art Smalley Four Capabilities of Accelerating organizations Specify precise approach to every task with built-in tests to detect failure and stop on error. Swarm to solve problems – immediate RCA. Share new knowledge throughout organization. Leaders lead by developing above capabilities in every single employee. Work Flow and System Design LEAN is a framework for successfully designing complex systems and work flows. A system is a collection of related work flows. A company can be viewed as a single complex system that  provides value to customers in return for money. LEAN is a way of working: Every employee uses LEAN work flow every day to both follow and improve the processes for which ...

The article describes how to open video, audio, and other media files in the Raspberry Pi desktop (the LXDE file manager) using the GPU-based player program. Does double-clicking on a video file in Raspbian result in slow blocky playback in SMPlayer and VLC on your Raspberry Pi? The short answer is that those video players will not work because at this time (Nov. 2013), they do not make use of the GPU on the Raspberry Pi. You need to use the hardware accelerated player, omxplayer, that is used in XBMC Live and OpenELEC.  The problem is that omxplayer is a command line player that is designed to be embedded in the XBMC based distributions.  I present below a way to make it play videos, if you double-click them in the Raspbian Desktop. Others have presented this method, but I've added a little bit of abstraction to make management easier. To start, open LXTerminal and the follow the process below. Step One - Get rid of the CPU-based media players sudo aptitu...

Introduction PowerShell is Microsoft's shell for their product lines. It's now on version 3.0. If you miss the power of the command line while using Windows on either your laptop or servers, PowerShell provides that power. Important concepts: Almost all aspects of the Microsoft ecosystem are objects within an overarching structure. You query and manipulate this structure and its objects with PowerShell. This includes all aspects of SharePoint, Active Directory, and Exchange. Other companies, like VMware (see below) have also written PowerShell modules. This "object nature" means that PowerShell pipes pass objects and properties, not just text.  Variables store data-structures of objects.  One-liners Note: Unwrap the code lines before you use them. Get Help Get the usage of the command "Select-Object": Get-Help Select-Object Built-in examples for the command "Select-Object": Get-Help Select-Object -exam...

Suppose you wanted to do the following in bash: for label in a b c d e f do variable_${label}=${label} done This has the intended result of setting a series of variables: variable_a variable_b variable_c variable_d variable_e variable_f But if what if you want to dereference them programatically? for label in a b c d e f do echo ${variable_${label}} done is not acceptable bash syntax. But there is a way... We can abuse export and env . We set them with: for label in a b c d e f do export variable_${label}=${label} done We can then programmatically dereference the variables by searching for them in the output of env and using awk to get their value. for label in a b c d e f do echo "`env | grep variable_${label} | awk -F= '{print $2}'`" done How's that for bash abuse?

Note: I posted a version of this on Stack Overflow. Errors can occur when there is an underlying SSH authentication issue, like having the wrong public key on the git remote server or if the git remote server changed its SSH host key. Often the an SSH error will appear as: " Invalid remote: origin: Invalid remote: origin" Eclipse will use the .ssh directory you specify in Preferences -> General -> Network Connections -> SSH2 for its ssh configuration. Set it "{your default user directory}.ssh\" . To fix things, first you need to determine which ssh client you are using for Git. This is stored in the GIT_SSH environmental variable. Right-click on "Computer" (Windows 7), then choose Properties -> Advanced System Settings -> Environment Variables. If GIT_SSH contains a path to plink.exe, you are using the PuTTY stack. To get your public key, open PuTTYgen.exe and then load your private key file (*.ppk). The listed public key sho...

Problem: How do I block scam calls and robo calls? Premise:  If the call is important, the caller will leave a voicemail. Solution: We put every number we know into our caller ID systems. If a number we do not recognize, or a number that blocks caller ID calls, we always let the call go to voicemail. Callers that really want or need to talk with us will leave a voicemail. If we are not interested, we delete the message. This process initially upset some of our parents, but we have not had to deal with a robo or scam call in some time, since the calling computers almost never leave a voicemail. Our parents are now used it and leave messages. Sometimes, we pick up as soon as they start talking. Our friends mostly communicate via Facebook, internet chat tools, and email these days, so they are used to asynchronous communication and don't mind leaving a message. The political parties and charities we support do leave messages. We call them back to donate or express our s...

Many people who have run Linux file servers and ftp servers have at some point wanted to free up some space. One good algorithm to do this efficiently is to remove old data starting with the largest files first. So how to generate such a list? One method is to use a " find -exec du " command: find /path/to/full/file/system -type f -mtime +10 -exec du -sk {} \; | sort -n > /var/tmp/list_of_files_older_than_10_days_sorted_by_size Once you have that list, you can selectively delete files from the bottom of it. Note that the list will likely be exponentially sorted. That is, the bottom 10% of the list will take up a huge chunk of the used storage space.

Assumptions: You have the "host" utility from BIND. You can do a zone transfer from the local DNS server Your Active Directory admins have properly configured DNS for Active Directory If you have the above, use the following command: host -t srv -l your.active.directory.dns.domain | grep _kerberos._tcp.*._sites.dc._msdcs.your.active.directory.dns.domain Replace your.active.directory.dns.domain with your actual AD DNS domain.

Have a school or workplace in your Timeline you want to get rid of or change? Here is the method that worked for me. Log into Facebook. Click Profile. On your Timeline, click "Update Info". Under "Work and Education", click the "Edit" button in the upper right hand corner of the section. Each workplace and school will get a box. In the upper right-hand portion of each box, there is an "Edit" link and a small "x". Click the "x" and confirm your choice to delete a workplace or school. Click "Edit" to change the workplace or school.

Problem ssh user@cisco_switch returns: ssh_rsa_verify: RSA modulus too small: 512 < minimum 768 bits key_verify failed for server_host_key Solution The modulus of the ssh RSA key pair on the switch is too small. If you have access, generate a new key pair on the switch with a larger modulus. Procedure Login with ssh protocol version 1 ( ssh space dash one ): ssh -1 user@cisco_switch (On the switch): enable (On the switch): Authenticate to "Privileged Exec Mode" mode on the switch. (On the switch): conf t (On the switch): crypto key generate rsa general-keys modulus 1024 (On the switch): Press enter to accept that the current key pair for the switch will be replaced. You now should be able to log into the switch with ssh protocol version 2.

What to do if you need to install or build a package on Linux and it wants a missing file/library/etc... Have you ever tried to install package or some vendor software, only to find that the install fails due to a missing library? Here is a collection of methods for finding the package that contains the missing file. Red Hat Enterprise Linux/CentOS Using yum yum whatprovides /full/path/to/missing/filename Note: In all of these processes, fill in the actual filename and path for which you are looking. Using rpmfind site Browse to http://rpm.pbone.net/index.php3/stat/2/simple/2 Enter filename or /full/path/to/missing/filename in the search box (start with just the filename) Check boxes of rpm-based distributions in which you want to search Click search Debian/Ubuntu apt-file sudo aptitude install apt-file sudo apt-file update apt-file search filename or apt-file search /full/path/to/missing/filename Using Debian's website Browse to http://www.debia...

Instructions for connecting external IP devices to the second NIC on a Debian/Ubuntu box using Local-link Address networking (169.254.0.0/16) e.g. connecting a Axis 206M camera. Install on the Debian/Ubuntu PC: dhcp3-server avahi-autoipd To configure dhcpd, add the following lines to /etc/dhcp3/dhcpd.conf: subnet 169.254.0.0 netmask 255.255.0.0 { range 169.254.8.2 169.254.8.20; } Add a route to 255.255.255.255 to the second NIC in order to send UDP broadcast traffic to it. This is accomplished by the last two lines below in /etc/network/interfaces: % cat /etc/network/interfaces auto lo eth0 eth1 iface lo inet loopback address 127.0.0.1 netmask 255.0.0.0 iface eth0 inet dhcp iface eth1 inet dhcp post-up route add -net 255.255.255.255 netmask 255.255.255.255 metric 99 dev eth1 post-down route del -net 255.255.255.255 netmask 255.255.255.255 metric 99 dev eth1

A quick note... If you are getting the following error on Mac OS X 10.6 with XCode 3.2.1, while compiling ffmpeg with software scaling (libswscale): 32-bit absolute addressing is not supported for x86-64 then you need to pass --arch=x86_64 to "configure" Cheers, -Adam