My Recent Experiences with Linux!

As a staunch Windows OS supporter, it's been quite a few years since I've installed a Linux distro for myself to experiment with. Why? The installation process (at the time I experimented last time) was complicated and frustrating, as was just using Linux itself.

So, after reading a few questions and comments here and there, I decided it was time to give it another shot. I first downloaded and set up an Ubuntu Studio ISO in an Oracle VM Virtualbox VM. I was suitably impressed with both the installation and relative (and intuitive) ease of use.

Encouraged by that result, I decided to try another Linux distro called ChaletOS which claimed it would give newbies like me an easier transition to Linux by giving me a familiar GUI interface to Windows 7. Again, I wasn't disappointed. Linux distros have indeed come a long way since I last experimented.

Installation was an absolute breeze and puts both Windows 7 and Windows 10 installers to shame! Ease of use? Fantastic, especially with the ChaletOS build. I think I'm starting to understand why Linux tends to have such a 'cult' type following.

I've still got a lot to learn and experiment with, but my first impressions are nothing but positive. If you're in a similar position to me, I'd encourage you to give Linux another try. By setting up in a Virtual Machine, you have nothing to lose and potentially, much to gain.

Cheers...

Andrew

When a customer asks you for something try to your best to understand what exactly he wants to accomplish and not really on what he says he wants, be clear with him what this will be used for before you make a recommendation, take your time, and discuss. for example a client ask me for a NAS drive so he can have all file in his office in a central location and all his staff can access it. Then he calls up that he moved his quickbooks file to the NAS drive and quickbooks does not work, of course it does work, quickbook needs its network manager installed in the same place where the file is and the network manager is a windows based application not Linux. Then he wanted his ticketing program file on the NAS, again sql is not supported on a Linux, would I know more details I would recommend him one model higher than the one I gave him which support a vm where he would be able to have a window machine on.

Solving the C10K problem with Linux + Apache + MariaDB + PHP + WordPress.

Just went through several days of tuning a new client's site running 50K-100K page requests/hour. Insane levels of traffic.

This surfaced problems in PHP + WP Super Cache. Bugs opened in both projects showing how to reproduce problem.

After all's said + done, site can now handle 10M visits in 9minutes. You read that number correctly. 1M+ reqs/sec sustained traffic out of WordPress.

So when someone tells you WordPress is slow, they're wrong.

What they should say is, something... somewhere... in the configuration of their entire LAMP Stack + WordPress setup is slow + likely fixing some minor setting somewhere will heal their site to run massive traffic.

New Vulnerability has been declared for WPA2 and WPA1 on 16 Oct'17, devices which are vulnerable are all android and Linux OS.  For more info go to below link
https://www.krackattacks.com/#intro
https://www.youtube.com/watch?v=Oh4WURZoR98&lc=z23eivfptsf1grp1macdp43bejz03y05xdiislv1cchw03c010c.1508360656455066

Warning: If your device uses WiFi, it's at risk!
News broke today about the Krack Attack, a new cyber threat that can decrypt and potentially view everything users are doing online. The Krack Attack preys on a weakness in WPA2 protocol. Hackers near the vulnerable devices (Android and Linux are at greatest risk) can retrieve sensitive user data and information.
Steps to Protect:
1. Apply patches as they become available. For phones and computers, the patches will come in the usual update format. For wifi routers, the manufacturer's website will have the patches.
2. Don't use public WiFi, especially for sharing or sending any sensitive information.
3. Double check that you are browsing with HTTPS. If you are unsure, install this plug-in to encrypt your communications with major websites and make your browsing more secure. https://www.eff.org/https-everywhere
4. Otherwise, use Ethernet.

For more tips on how to protect yourself: https://techcrunch.com/2017/10/16/heres-what-you-can-do-to-protect-yourself-from-the-krack-wifi-vulnerability/

linux email relay has stopped working

in the log it reads
Oct  9 07:46:15 culser postfix/smtp[18330]: 21FE619C627: to=<circleconect@gmail.com>, relay=smtp.rcn.com[69.168.97.78]:25, delay=0.44, delays=0.03/0.01/0.26/0.15, dsn=5.7.1, status=bounced (host smtp.rcn.com[69.168.97.78] said: 554 5.7.1 [P4] Message blocked due to spam content in the message. (in reply to end of DATA command))

the relay i am using in postfix is the smtp address. i am getting a 554 error apparently. i pay for IP service thur them but they say they have no restriction. maybe it is a setting in postfix s

i need someone's advise who has knowledge of Linux, postfix, relays, and email servers.

Dear Experts,

I'm about to install Oracle Weblogic Server for the first time, I'm looking for your recommendation before strating the implementation even if on the OS level if you have any concerns please inform me so I can finish the job perfectly as my company will depend on me to finish it, I'll use subscribed RHEL v6.8 on HP proliant DL580 G7

Addition of native Linux support in windows is really amazing..

This is a good approach to teaching. Start with simple questions about how to reach an end goal. From "how do I install the operating system" to "how do I install Minecraft?"

If you ever want to play bash on hard mode, install suicide linux. It sudo rm -rf / 's your machine if you mistype any command.

https://qntm.org/suicide

Just found out about the command vimtutor. I use vim a lot for work and feel fairly confident in it, but I didn't know some of the stuff that vimtutor goes through. I had a teacher in college tell us to become vim power users all the time. Not sure what versions of linux have this installed, but it worked on amazon linux.