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Tmux Tutorial and Command List Cheat Sheet

April 9, 2021arstech Leave a Comment
Tmux Tutorial

In this tmux tutorial you will learn basic tmux usage and list of of essential commands. tmux is an open-source terminal multiplexer (Terminal MUltipleXer) for Unix-like operating systems. It allows multiple terminal sessions to be accessed simultaneously in a single… Continue Reading →

CentOS, Linux, Ubuntu tmux, tmux attach to session, tmux detach, tmux new window, tmux tutorial

How To Cleanup Boot Partition Ubuntu / Debian

January 28, 2021arstech Leave a Comment
Cleanup Boot Partition Ubuntu

In this article you will learn How To Cleanup Boot Partition Ubuntu Linux. Linux boot partition can be filled with old unused kernels. In first step we need find out current Linux kernel version and unused kernels. After it remove… Continue Reading →

Linux, Ubuntu Boot Partition, Linux, Ubuntu

How to Fix ImageMagick error: convert-im6.q16: unable to open image

January 23, 2021arstech Leave a Comment
convert-im6.q16: unable to open image

I this article I will show how to easy fix ImageMagick error: convert-im6.q16: unable to open image During converting from PDF to JPG with ImageMagick in Ubuntu Linux you can have conversion error: convert-im6.q16: unable to open image In.pdf’: No… Continue Reading →

Linux, Ubuntu error, imagemagick

How to Convert PDF to JPG in Linux using command line

January 23, 2021arstech Leave a Comment
Convert PDF to JPG Linux

In this article you we learn How to Convert PDF to JPG in Linux using command line with example. ImageMagick Suite We will use the ImageMagick package. The convert program is a member of the ImageMagick suite of tools. Use… Continue Reading →

CentOS, Linux, Ubuntu convert, imagemagick, JPG, PDF

How to Install Zoom on Linux using the terminal

January 19, 2021arstech Leave a Comment
Install Zoom on Linux

In this article I will show how to Install Zoom on Linux – Ubuntu (Debian) and RedHat (CentOS, Fedora) Install Zoom on RedHat (CentOS/Fedora) Steep 1. Download Zoom Client First we need download Zoom for Linux from Download Center. Open… Continue Reading →

CentOS, Linux, Ubuntu centos, Linux, redhat, Ubuntu, Zoom, Zoom on Linux, zoom ubuntu

How to fix CentOS 6 error: YumRepo Error: All mirror URLs are not using ftp, http[s] or file

December 7, 2020arstech 41 Comments
YumRepo Error All mirror URLs

In this article I will show how to fix CentOS 6 error: YumRepo Error: All mirror URLs are not using ftp, http[s] Problem When trying update CentOS 6 with yum update command getting error: Loaded plugins: fastestmirror, refresh-packagekit, security Setting… Continue Reading →

CentOS, Linux cent os 6, yum, YumRepo Error

Fix Webmin Error: Failed dependencies: perl(Data::Dumper)

September 18, 2020arstech Leave a Comment
Webmin Failed dependencies perl Data Dumper

During Webmin installation on CentOS 7 from RPM you may have error:error: Failed dependencies:perl(Data::Dumper) is needed by webmin-1.955-1.noarch Install perl-Data-Dumper To fix problem install perl-Data-Dumper with YUM: # yum install perl-Data-Dumper Now you can install Webmin again: # rpm -U… Continue Reading →

CentOS, Linux centos 7, Data::Dumper, perl, webmin, Webmin Error

Cron Job for Linux To Delete Files Older Than X Days

September 18, 2020arstech Leave a Comment
Linux To Delete Files Older Than

In this article I will show example of cron job for Linux to delete files older than 10 days. How to Edit Crontab file To edit or create new crontab file, type the following command: $ crontab -e Cron Job… Continue Reading →

CentOS, Linux, Ubuntu Cron Job, Crontab, delete, Linux

Open-VM-Tools on CentOS 7 Install

September 2, 2020arstech Leave a Comment
Install Open VMware Tools on CentOS7

In this guide you will learn how to Install Open VMware Tools on CentOS7/RHEL7. Open-vm-tools CentOS 7 install can be much easier and faster than official VMware Tools. Open-vm-tools enables the following features: The ability to perform virtual machine power… Continue Reading →

CentOS, Linux, VMware open-vm-tools, open-vm-tools centos 7, VMware Tools

SMTP Error (550): Failed to set sender (Access denied – Invalid HELO name (See RFC2821 4.1.3))

August 31, 2020arstech Leave a Comment
Access denied - Invalid HELO

In this article i will show how to fix error in VestaCP: An error occurred!SMTP Error (550): Failed to set sender “xxx.zzz” (Access denied – Invalid HELO name (See RFC2821 4.1.3)). The problem happens when you try to send email… Continue Reading →

CentOS, Linux, Ubuntu Access denied, Invalid HELO, roundcube, SMTP Error (550), vestacp

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