Uncategorized

Overall reference speed: LITEONIT LCS-256L9S-11 2.5 7mm 256GB (HC8110B) via internal SATA in Probook 6550b i5: All laptop ports below are USB2 on an HP 6530B laptop. SATA high speed [2210] (2014 build) via SATA/USB dongle: The TERMINALLY slow SanDisk Cruzer Force: The as bad Kingston DataTraveler 2.0: The better write speed Integral USB3:

I have been tinkering with PCs since my first Atari ST1040 in 1988, then a Win95 PC from 1996 on, and have come into possession of many "broken" PCs and parts since, but it still amazes me that you can get old hard disks in boot sales etc. that have masses of personal data of the ...  Personal Data Awareness for Broken/Stolen PCs – The Data People Give Away! Use Shred/Other App

Be careful with the newer  "free Refresh/Install" fix Win10 ISO from MS - it still tries to conceal the wifi-sense section, off the screen bottom - in the custom install section! Devious bastards! DON'T use the Express option - all defaults are ON. ---- I have had an older SATA caddy that has served me ...  DD and Cloning Windows System Drives

Linux' ability to copy and/or replace data easily for backup purposes is second to none with tools such as cp, rsync and dd, so with cheap hardware like these below, making/changing Windows or Linux drive/partition/file backups from spare SATA hard drives is even easier, as you don't need to take the cover off a tower to ...  Cheap But Handy USB/SATA/IDE Backup Gizmos from the Web

First, hats off to Canon (and all other Corporations that actively support Linux), it SHOULD be the future, as Win10 heads toward being an annoying advertising space for MS products...it's bad enough suffering pop up ads on the Web - do you want that in your OS as well, when you have work to do..? ...  Slick Canon Printer Support for Linux – How Corporations Should Do It…

Because the WiFi setup is so complex and I can't begin to explain it, it's best to give the final working config including the Network Time Protocol settings that worked for me to set the 877s clock by so log files and Internet time is correct. cisco877#clock set 21:12:20 11 january 2017 cisco877#sh clock 21:13:11.295 ...  Cisco Setup WiFi LAN and NTP – Full Config + Password Reset + Webpage Access

Routers have two main methods of transferring traffic across different interfaces/networks; using static routes or routing protocols. I can't teach a year long CCNA course here, but just as a simple intro, the routes set and available on routers and PCs can be seen with various commands. In linux, the command is simply: stevee@Dell490 ~ $ ...  Cisco Setup ACL Settings and Basic Routing Concepts

Home routers use Network Address Translation as a method to maximise finite IPv4 address space on the Internet by allowing LAN only IP address ranges on private networks to have Web access by sharing the external WAN IP address(es) and ports, so have an effective basic firewall as part of the process, as WAN devices cannot ...  Cisco Setup NAT Connections (LAN to WAN), ACLs, DNS and DHCP Server

I can't write this Post to WP as I go because I don't have 2 phone lines to use (!!), so I won't have a working internet connection for LAN access via the Cisco until many sections are set up fully. Below, I add the minimum needed key sections of the config file that enable WAN connectivity only ...  Cisco Setup ADSL Connection (WAN)

When Cisco kit becomes superseded - so officially unsupported - it usually means the kit becomes available to home/SOHO users much cheaper on Ebay, so bargains can be had if you like your network kit to have better than average capabilities, you like learning a new tech challenge and know what pitfalls to look out ...  Cisco Setup via Linux – Serial Port Connection

Business Legal requirements under Data Protection Act 1998 Identify/nominate the Data Controller: https://ico.org.uk/media/for-organisations/documents/1558/getting_it_right_-_how_to_comply_checklist.pdf https://ico.org.uk/media/for-organisations/documents/1575/it_security_practical_guide.pdf https://ico.org.uk/media/for-organisations/documents/1542/cctv-code-of-practice.pdf 10 practical ways to keep your IT systems safe and secure: "Keeping your IT systems safe and secure can be a complex task and does require time, resource and specialist knowledge. If you have personal data within your IT system ...  Small Business Data Security Requirements Summary

Sept 2017: Seems you need hassle sufferance for a google API key to view gmaps in dump1090 - if it wasn't bad enough with Windows dictatorship for the last 30 years, now you have to Planetary Wide Big Brother with Google and its Loon Balloons ...yet another control freak dictatorship under the guise of benevolence......you'll ...  Intro to Software Defined Radio – FM Stations and Tracking Aircraft

If you watch and keep a lot of YouTube or other video files, and backup regularly from your main laptop to other PCs, you may accumulate a lot of partial videos from interrupted copies and  rsync transfers that have extensions of the type .crdload or .MOV_0002.mp4.B8ObyK which can accumulate to a surprising size. Running find ...  Save Gigabytes of Failed Rsync Video Transfers on a Drive

AWK can be used in a non GUI environment as a pretty impressive, if limited Spreadsheet simulation to generate the correct data at each stage of a basic stats process that you may do in a tech maths class for example. It is limited by it's in built maths functions, which are still considerable: Calling ...  AWK as a Limited Spreadsheet Simulation for Stats

Understanding differences between the output of one command being taken as the input (the argument) for another, OR whether the output of a command is read by the shell (an unseen "subshell" if you like) and interpreted (or not) as a command or an argument in itself, can be very confusing when piping commands, depending ...  Developing One Liners with Command Substitution

  Live histogram in a terminal??!! So how did I get to this point after 3 days of hard slog? Read on..! 2/9/16 OK, I have checked my suspicion that the number of hashes are out of proportion for live data after the first reference maximum is read (without the sort function in the first part ...  Printing (LIVE!) ASCII Histograms from Numeric Data Output + Files

If you own m4a music files you bought off Apple iStore/other, and don't use iTunes now you have moved permanently away from Windoze (WHY NOT YET????!! Shame on you!!), you may know that m4a files don't play too well with mplayer on a remote server system if you are ssh'd into it they are broken ...  Converting m4a to mp3

man sysbench oltp This test mode was written to benchmark a real database performance. At the prepare stage the following table is created in the specified database (sbtest by default): Example usage: (THESE DON'T WORK AS IS - A DB NEEDS CREATING FIRST - SEE BELOW) $ sysbench --test=oltp --mysql-table-type=myisam --oltp-table-size=1000000 --mysql-socket=/tmp/mysql.sock prepare $ sysbench ...  Sysbench – Simulated Database Testing

This is a simple while loop to load a single core of a multi-core CPU so there is a reference load for any tools you may need to test observability function:  while :; do :; done Here it is running on my localhost core laptop using SysMon's viewer. You can see core 4 rising to ...  CPU Bound Loop to Load 1 CPU Core to 100% to Test Observability Tools

Going with the examples in the sysbench man page for disk IO - a 3 part process: Usage example: $ sysbench --num-threads=16 --test=fileio --file-total-size=3G --file-test-mode=rndrw prepare $ sysbench --num-threads=16 --test=fileio --file-total-size=3G --file-test-mode=rndrw run $ sysbench --num-threads=16 --test=fileio --file-total-size=3G --file-test-mode=rndrw cleanup I'll try these in my home dir on the laptop first for a timescale as ...  How Slow Can You Go? Sysbench Comparisons Disk/File IO

stevee@AMDA8 ~ $ sudo sysbench --test=mutex --memory-oper=read run [sudo] password for stevee: sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 1 Doing mutex performance test Threads started! Done. Test execution summary: total time: 0.0071s total number of events: 1 total time taken by event execution: 0.0066 per-request statistics: ...  How Slow Can You Go? Sysbench Comparisons – Memory

To continue on with this old V newer tech performance theme, as it is important to have references for at least 3 areas of system processes as indicators of performance: CPU; memory and disk IO. I have discovered Sysbench since reading Brendan Gregg's book, so will use that across my 4 different PCs, as it ...  How Slow Can You Go? Sysbench Comparisons – CPUs

The last Post looked at log captured data from sar/sadf for Gnuplot, so I want to extend those ideas to live capture using dstat, as it has some useful switches. Dstat can show a rolling output at a 1 second default with options: Using tee, it is possible to view the output live AND store it ...  Gnuplot – Basic Ideas to Capture Live System Data

This example is my starter data.dat file for building complexity if required, later. It combines the basics required for a time of day x axis against y axis numerical data, with x/y autoscaling and title functions etc. Paste it into some file name: vi plot1.gnu set title 'user CPU time' set autoscale set terminal png ...  Gnuplot – Basic Starter Example Data File for System Profile Plots

A simple, quick and dirty comparison of disk transfer speeds alone for a given system really shows the increase in performance/cost in the last 10-15 or so years, for newer tech over older, as you would expect. You get a lot more for your money than you paid for in the past for sure, and ...  How Slow Can You Go? Old and New Tech Moore's Law Comparison – Hard Drives

This is a partial list of tools from Brendan's presentations, book and elsewhere it's up to you to learn how to use them, when and why. Many can show rolling O/P by a 1 sec addition eg mpstat 1 sudo apt-get install sysstat  apt-cache show sysstat Description-en: system performance tools for Linux The sysstat package ...  Linux Performance Tools List Check Utilisation, Saturation, Errors (USE)

Profiling builds a picture of a target that can be studied and understood...by sampling the system state at timed intervals...provides a coarse view of activity, depending on sampling rate. Systems Performance, p30, Brendan Gregg Flame Graphs are a stroke of genius and an advanced topic. I discovered them only today. They give an insight into the inner workings ...  Flame Graphs by www.brendangregg.com – Intro to System Profiling and Admin Tools

https://www.gnuplot.info/demo/ sudo apt-get install gnuplot-x11 This looks like a great tool for tech students of all disciplines. The basic idea is plotting the data from an already prepared data file, e.g. "gaussian.txt"  then setting the visual parameters in gnuplot for the look/type of the graph, then running a final plot command e.g. plot 'gaussian.txt' using ...  Intro to Gnuplot

Common Metach­ara­cters ^ [ . $ { * ( \ + ) | ? < > The escape character is usually \ This Post evolved due to the masochistic desire improve my knowledge of regexs and metachars, possibly using them to tidy up MP3 album/song titles that can be horrendous looking on the command line, ...  An Intro to Metachar Search Methods, Wreck the MP3s

Regular expression metacharacters usage consist of the following: ^ $ . [ ] { } - ? * + ( ) | \ These cannot be read about using the man pages for each symbol except the [ -test” chars e.g: man ^ No manual entry for ^ These metacharacters can be read and expanded ...  Exploring Find Cmd Options – Continuing With Metacharacters

This find command exploration nearly got me sectioned! It is the most un-intuitive, cryptic, annoying command I have come across. If you get to the end of this Post doing similar tests you may understand why...if you want some quick simple examples (not all work in Mint) look here: 35 Practical Examples of Linux Find ...  Exploring Find Cmd Options – file types you may want to find…and go insane trying

https://gkrellm.srcbox.net/ These are cool looking but very comprehensive status widgets that allow remote server monitoring via ssh and X11 once set up. This assumes you have generated local public RSA keys using: ssh-keys that are stored in .ssh/id_rsa.pub, and copied them across to any remote servers you wish to use passwordless logins with using: ssh-copy-id ...  Remote Server gkrellm Monitors or Other GUI Apps via SSH and X11

sudo is a command that allows users with appropriate permissions to take on another users or superuser (root) ID, so their permissions. man sudo DESCRIPTION sudo allows a permitted user to execute a command as the superuser or another user, as specified by the security policy. man su NAME su - change user ID or ...  Setting Sudo Users with Adduser and Visudo in Mint and Raspbian

After you read this article, I'll let you think of interesting ways to use the above video example of piping data between terminals into other programs for immediate processing...if the commands are not clear; term 1 creates a fifo pipe in my home dir: mkfifo fifo_pipe term 2 cats that pipe to receive what comes ...  Experiment with Pipes, Redirection, Command Substitution and Variable Expansion

I assume you already have a Mint iso downloaded from www.linuxmint.com saved on a working system somewhere and have used the USB Image Writer on another Mint PC to create a USB install stick (it's quicker and more convenient via USB than DVD if your BIOS can boot to it); and installed Mint on your new ...  Post New Mint Install Tweaks Options

I wanted to extend the Imperial/metric converter further, by adding feet to the cm to inches conversion, so human heights could be displayed in a "6ft, 2in" style. It still needs the maths debugging for the whole 6 feet value remainder issue as shown:   I struggled with the logic and units for ages with ...  Practical C Programming – Unitsconverter Prog: using fmod for float remainder

I wanted to explore a further level of switching to implement a sub level menu within a main switch option, by adding to my Imperial to metric units converter. This allows extra functionality to a handy program - a two way units conversion choice.   Although trial and error placement is slow, it does let ...  Practical C Programming – Switch and Nested Switches Example

Chapter 9 introduces local variables, functions, and parameters. A big vim tip here for prog editing/writing: Lesson 4.3: MATCHING PARENTHESES SEARCH ** Type % to find a matching ),], or } . ** 1. Place the cursor on any (, [, or { in the line below marked --->. 2. Now type the % character. ...  Chapter 9 Notes Practical C Programming, 3rd Edition By Steve Oualline

Creating an eBook PDF from your WordPress Posts Using Linux and WordPress Tools Only Here is the research I did to find out how - using Worpress and what is free and repository available in linux - I could use to create a reasonably professional looking summary document of my Valve Amp Posts with a ...  Creating an eBook PDF from your WordPress Posts

Chapter 8 describes additional control statements. Included are while, break, and continue. The switch statement is discussed in detail. while loop example: #include <stdio.h> int total; /* total of all the numbers */ int current; /* current value from the user */ int counter; /* while loop counter */ char line[80]; /* Line from keyboard ...  Chapter 8 Notes Practical C Programming, 3rd Edition By Steve Oualline

Chapter 7 takes you through all the necessary steps to create a simple program from specification through release. Structured programming, fast prototyping, and debugging are also discussed. It's just a simple matter of programming. —Any boss who has never written a program The major steps in making a program are: •Requirements. Programs start when someone gets an ...  Chapter 7 Notes – Practical C Programming, 3rd Edition By Steve Oualline

Chapter 6 explains simple decision statements including if, else, and for. A discussion of == versus = is presented. If the condition is true (nonzero), the statement will be executed. If the condition is false (0), the statement will not be executed. if (total_owed <= 0) printf("You owe nothing.\n"); Multiple statements may be grouped by putting them ...  Chapter 6 Notes Practical C Programming, 3rd Edition By Steve Oualline

Chapter 5 covers arrays and more complex variables. Shorthand operators such as ++ and %= are also described. A lot of info in this chapter - difficult to summarise - almost totally copied...a few successful progs written up to now for 2 full days of study of this PDF - bed ridden with a bad ankle!! ...  Chapter 5 Notes – Practical C Programming, 3rd Edition By Steve Oualline

https://www.oualline.com/ Chapter 1 gives a brief description of the C language and its use. This chapter includes some background on the history of the language. There is only one way to learn how to program and that is to write programs. You'll learn a lot more by writing and debugging programs than you ever will by ...  Chapters 1-4 Notes – Practical C Programming, 3rd Edition By Steve Oualline

If you are thinking of buying a Picam then I found the case that has the right lid to fit the camera is this one: bought from NewIT or a whole starter kit that has that case lid from PiHut: https://www.ebay.co.uk/itm/Deluxe-Black-Case-for-the-Raspberry-Pi-3-2-and-Model-B-B-Plus-v-1-2-/181565226592?hash=item2a46217e60:g:xpkAAOSwHnFVi9dm https://www.ebay.co.uk/itm/RASPBERRY-PI-3-8GB-Starter-Media-Centre-Kit-2016-Model-/261984753417?hash=item3cff821709:g:XwgAAOSwq19XBncF and can have a cheap indoor mount carefully screwed into the rear of the ...  Multi Picam Webserver

sudo mogrify -resize 25% *.JPG As I write these and motorcycle Posts for this site that often require fone pics to be uploaded to WordPress, I needed a way to reduce default Sony Arc S 5MP shots of up to 1MB size to a smaller upload size, for which I used MS Paint for years. Now ...  Cool Command #10 – mogrify

I installed phoronix on a PC to test some graphics cards I have to sell, and on my localhost core laptop to compare and run diff tests simultaneously, as below. Choose your tests carefully as there are massive associated downloads! It takes a while to get something going with any results....the simplest graphics test (I assume) ...  Testing graphics (PCIE) cards with phoronix-test-suite

Encapsulation comes in many forms and in my opinion is often overlooked and under-reported as a major concept in many IT, telecoms, computer, networking or other binary based technical courses. We don't even teach visualising "encapsulation" with the perfect explanatory image of a Russian Doll, yet most children are familiar with that. For me, encapsulation ...  Encapsulation – From Bits to Gigabytes in 200 Years

Recently I found DD in Mint not writing directly to new blank CD/DVD disks via the actual device ID such as /dev/sr0, as I thought it always used to in older, pre Mint, Debian distros, with a complaint of: stevee@AMDA8 ~ $ dd if=Downloads/Win7/Win7_64.iso of=/dev/sr0 bs=32M conv=noerror,sync dd: error writing ˜/dev/sr0,: No space left on ...  Issues Writing with DD to dev_sr0 With Blank DVDs

The O_Reilly.pdf pdf of this 1990 book refers to POSIX standard changes in SED etc. so may account for different behaviour by my Mint version of grep, sed and awk etc. from their original examples, as I think happened below. As an introduction to the ideas of iteration and recursion using SED: In simple terms, ...  SED Basics using O_Reilly.pdf example, and Unexpected Mind-Bending Parsing Behaviour

man crontab crontab - maintain crontab files for individual users (Vixie Cron) SYNOPSIS crontab [ -u user ] file crontab [ -u user ] [ -i ] { -e | -l | -r } DESCRIPTION crontab is the program used to install, deinstall or list the tables used to drive the cron(8) daemon in Vixie ...  Using Crontab to Automate Commands on Schedule and with Poweroff

As I have stated before, I'm not programmer by any means I just don't have the ability, but I do appreciate the skills required to be one.   I also appreciate there has been a lot of maths, engineering, systems analysis and other technical brainpower that has, historically, gone into the theoretical and practical aspects ...  Understanding Basic Ideas Behind Optimised Code and Erastosthenes Sieve

Ever had a situation where you could not recursively remove some directories due to one or more files having a permission that even root could not take control of? Did you ever find out why? I have had this scenario on a backup drive, with Windows files having an attribute set from being copied from ...  Using and finding the attribute of i assigned to a file with chattr and lsattr

An lsof Primer here for this very powerful tool: https://danielmiessler.com/study/lsof/ 10 lsof Command Examples in Linux man lsof DESCRIPTION Lsof revision 4.86 lists on its standard output file information about files opened by processes for the following UNIX dialects: Apple Darwin 9 and Mac OS X 10.[567] FreeBSD 4.9 and 6.4 for x86-based systems FreeBSD ...  Cool Command #8 – lsof

Why do programmers/bosses/managers feel they have to interfere in stuff that's not needed? A Bill Gates/MS, know all, egomaniacal, OCD control freak character trait or something? If people can't write or type properly, why is it up to a programmer to "cater" for it by DEFAULT???!!! Jeez..."texturize"...Really..!? Shit! My question mark is placed after the ...  Fix Double Minus Sign Problem in WordPress in Theme Functions php

Be careful with the --delete switch!! I regard this as the most dangerous command since when rm -vr / did not have a default "--interactive" to prevent deletion without checks.  --delete did not seem to behave as described below - test it on expendable data first! You only need z compression over slow links. a archive ...  Basic Rsync Usage Summaries from Man Page

*BEWARE! a  note on terminal characters before you start: apostrophe pairs can be problematic for copy/paste operations between different editors, term types, WordPress etc. The common standard is now UTF8, so make sure you set PuTTY correctly using the Translation option: This may still paste one of the two apostrophes in the wrong "direction" and ...  Using Awk, Sed, Cut and TR To Cut a Column List for Character Substitution and Nmap Bad Ports List

I just want to doc the basics of this and will add as I find more info, with the initial overview coming from: https://www.howtogeek.com/howto/ubuntu/how-to-mount-a-remote-folder-using-ssh-on-ubuntu/ Beware the line for changing ownership of /dev/fuse or any other fuse related commands at that link for Ubuntu! My Mint PC lost my user mdm (mint desktop manager) access so ...  Adding a SSH Share Using SSHFS and Viewing Netstat

After studying the conf file for Motion looking for an Email Alert function of some kind, I found: # Command to be executed when an event starts. (default: none) # An event starts at first motion detected after a period of no motion defined by gap ; on_event_start value I thought about using sendemail as ...  Using Sendemail + Curl For a Motion Alert and Hacking Its 2+ year old Perl TLS Bug

This App may get you started with what webcams work with the Pi, and get on with using the PiCam, which gets seen as /dev/video0 if it is the only camera. From prior research, it may be a good idea to load the PiCam v4l2 driver module at boot by setting: bcm2835-v4l2 in /etc/modules: After ...  Testing Webcams With fswebcam, Pi Noir Picam and Remote View of Motion on the Pi

https://www.raspberrypi.org/documentation/hardware/camera.md I'm not a programmer at all - never was - I tried a few times at college with C and Java, but hated it... So this is an enjoyable start for me, as there is immediate satisfaction, as Python is "English"; plain and simple as it gets with programming - so far anyway - ...  First Python Scripts For Pi Camera

avconv     -i     /xxx.mov     -c:v     copy     -c:a     copy     /xxx.avi I am just scratching the surface of this in Mint, but want to document a working procedure for a handful of video file formats that worked for me to convert a .mov (Apple iPlayer/Quick Time et al) to some different others, that played in both Mint and ...  AVCONV Video Format Conversion Command Line Structure

I'm still struggling at this point to get correct info to make some of these menus work. Those in bold work. -- default menu.c32 prompt 0 timeout 300 ONTIMEOUT local menu title # PXE Boot Menu # label 1 menu label (^1) Install pmagic32 kernel pmagic/bzImage INITRD pmagic/initrd.img,pmagic/fu.img,pmagic/m32.img,pmagic/files.cgz APPEND edd=on vga=normal label 2 menu label ...  PXE Menu Issues and ISO Boot File Problems

Getting a PXE server going in Linux has never been that easy, as there were/are so many options for doing it for the uninitiated. It still took me a big recap and head scratching after a few years since doing it, and now things aren't much easier, even if there are some recent, better How ...  Mint as a PXE Server for PartedMagic and Multi OSs

* NB: Test this rigorously for reliability before implementation in a critical environment! See Post end of page. For education only, due to transfer disconnection hassle factor.* *1/8/15 May work better after a firmware upgrade ------------ This turned out a very useful, fun and informative Post! A cheap and dirty NAS solution for home or ...  Setup and Access a 1TB FAT32 USB Share on a Draytek Router

If you want to "crack on" with checking the strength of your own passwords, and you have a test box and plenty of time on your/it's hands/cpu - read the tut here: https://linuxconfig.org/password-cracking-with-john-the-ripper-on-linux As passwords are such an important part of everyday IT experience, I want to look at some of the basics of what ...  Basic Maths and Ideas Behind Password Complexity

Linux has thousands of applications and programmes available to it, some are fundamental to its operation as part of the base system, and most are optional additions that can be added as required by the user. So how many are there and how can you find out what each does or what it depends on ...  Linux Commands + Packages – How Many, and What For?

The GCHQ guys inc. Clifford Cox finally get a mention as the original secret inventors of RSA: ISCW_Cryptography_and_VPNs_OU_template_v1.ppt

Continuing from the last Post, I want look at dd_rescue... Simply, it recovers data blocks as small as 512k in fwd or rev directions to maximise the potential for reading bad sectors. If it can't, it continues on without quitting to the next sector, writing zeros in place of the corruption, which may mean possible ...  Cool Cmd #6 – dd_rescue

Example using a phone SIM card. In Windows, a deleted file from such flash type media does not go into the Recycle Bin so is "lost" immediately no?  The card is /dev/sdf1 in this case. Let's look at it with some Linux tools... # cfdisk /dev/sdf  cfdisk (util-linux-ng 2.13.1.1)  Disk Drive: /dev/sdf  Size: 249823232 bytes, ...  File Recovery with TestDisk + Photorec

Protect Your Data and PC ***** For more of Business/Corporate level security understanding of legal requirements for Data Protection see this PowerPoint: Introduction_to_Security.ppt For Server 2003/other(?), the ONLY FREE AV software I know that will run on it is Immunet - that will remove/quarantine files also. https://www.immunet.com/ ClamAV for Windows is a scanner - it ...  Recover Your Data and PC

Because there are so many aspects to overall system security management that have to be considered, basic security protocols and definitions have been established to enable a structured, more modular approach to separating and simplifying the many complex and often overlapping areas involved in security issues, so that forms of system protection could be researched, ...  Basic Security Concepts – Principles For Any System or OS

After reading a lot of William Shott´s free TLCL.pdf here: TLCL-13.07.pdf I finally found a working (but incomplete) version of the script that produces an html page of the system status for the parameters he programmed in this BASH script lesson from his book and blog page here: https://linuxcommand.org/lc3_wss0120.php It looks like this: The slightly ...  William Shotts SysInfo.html Creator Script

This isn't really Linux stuff directly, but is PHP and HTML coding related and found in some scripts like Apache confs maybe, so good to understand a little if you have never done an old fashioned HTML web page before. Having spent a lot of time on Blog stuff lately, I thought I would put ...  Simple WordPress CSS Text Size and Color Tweaks

Cool Cmd #3 Rsync man rsync DESCRIPTION Rsync is a fast and extraordinarily versatile file copying tool. It can copy locally, to/from another host over any remote shell, or to/from a remote rsync daemon. It offers a large number of options that control every aspect of its behaviour and permit very flexible specification of the ...  Cool Command #3 Rsync

(Amended 18 Sept 2015) sudo dd if=/dev/sdc of=/dev/sdb bs=512 conv=sync,noerror status=progress For an insight into using the best Block Size values when copying to/from different media types, and using DD in general, read this link FIRST - see the quotes to get some perspective and optimise your copying time: https://blog.tdg5.com/tuning-dd-block-size/ "Let's start off with a ...  Cool Command #1 – DD with Progress

I have an Acer 4520 laptop from 2008 that came with Vista originally, installed in the 10GB hidden D2D recovery partition. I have used Win7 64 instead for the last 4 years as Vista was generally slow and awful as everyone knows, and we got Win7 cheap as college students, so I had wiped the ...  Re-install Win 7 With No DVD and Replace Laptop Auto Recovery Partition