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I've always got questions on some Linux error message, and you probably do too! I may have the answers.

Hard Drive

How do I mount exfat USB drive formatted on OSX

I formatted a USB drive on my mac with exfat settings and then put it into the CentOS 7 server.  When trying to mount I got the error mount: unknown filesystem type ‘exfat’ So we need to install exfat drivers Read more…

By Jeff Masud, 7 yearsFebruary 21, 2018 ago
Centos

How do I delete a git remote branch?

Git is the version control software we using for managing all our project.  We like to use Gitlab CE a hosted solution for all our internal developers. A  developers asked how to remove a branch off my local computer and Read more…

By Jeff Masud, 7 yearsFebruary 19, 2018 ago
Centos

Kerio connect Antivirus Server error Cannot find update location

Today we had a Kerio customer report a problem with Kerio and Anti Virus updates not being downloaded, this are the error message he was getting. 02/Feb/2018 08:43:41] AntivirusModule.cpp: Antivirus Server error(0): Cannot find update location: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol Read more…

By Jeff Masud, 7 yearsFebruary 17, 2018 ago
AMD Radeon

Overclocking Radeon RX 570 on Ubuntu

I’ve been doing some research trying to find the best way to overlock a XFX AMD Radeon RX 570.  Before starting  we start check the clocks to make sure our adjustment are properly done. cat /sys/kernel/debug/dri/2/amdgpu_pm_info my default output is Read more…

By Jeff Masud, 7 yearsFebruary 15, 2018 ago
OSX

OSX El Capitan an error occurred while preparing installation

I was trying to reinstall an old Apple MacBook Pro from 2009 for a friend. They had previously upgraded all the way to the newest operating system macOS Sierra version 10.12.6 and they wanted to do a clean installation to Read more…

By Jeff Masud, 7 yearsFebruary 13, 2018 ago
AMD Radeon

How to determine AMD GPU clock speed on Ubuntu

I was wondering how to check clock speed before making adjustments on one my co-workers AMD Radeon RX570 GPUs This is the command you run, it will output the current clock frequencies cat /sys/kernel/debug/dri/0/amdgpu_pm_info this is my card GFX Clocks Read more…

By Jeff Masud, 7 yearsFebruary 11, 2018 ago
Claymore

How to install amdgpu-pro drivers on Ubuntu

It’s pretty straight forward to install AMD drivers on Ubuntu. Do a fresh installation of Ubuntu 16.04 Download the latest AMD drivers and from the AMD website and perform the following steps. cd ~/Downloads/ wget –referer http://support.amd.com/ https://www2.ati.com/drivers/linux/ubuntu/amdgpu-pro-17.50-511655.tar.xz Now that Read more…

By Jeff Masud, 7 yearsFebruary 9, 2018 ago
Apache

How to forward Cloudflare IP headers to Apache via Varnish

We’ve got customers who are using CloudFlare as a CDN Network and for Security in case their Word Press website gets a lot of traffic.  This gives them the ability to essentially cloak the really public IP address of their Read more…

By Jeff Masud, 7 yearsFebruary 3, 2018 ago
Claymore

Quick setup Claymore Ethereum mining on Ubuntu with AMD Radeon RX570

One of my co-workers built a small rig using 2x AMD Radeon RX570 GPUs. I was going to give him my USB bootable installation to get up and running quickly, until I realized he was running AMD GPUs and Nvidia GPUs.  Read more…

By Jeff Masud, 7 yearsJanuary 31, 2018 ago
Bios

MSI Z270-A PRO problem mining with 6 GPUs

I was working on an Ethereum 6 GPU open air mining rig.  I originally ordered a Biostar TB250-BTC+ 8 GPU board, but it got lost and never showed up, tried to order another but was backordered for like 3 weeks.  Read more…

By Jeff Masud, 7 yearsJanuary 30, 2018 ago

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