Setup command in CentOS 7 throws Error – FirewallD is active, please use firewall-cmd!
I generally use setup or system-config-firewall commands to configure firewall in CentOS machines. But the same commands in CentOS 7...
Home » centos
How to Fix the Error – ModSecurity: Access denied with code 44 [Apache]
Question: I was trying to upload a PDF file of size 2MB in MediaWiki and hit with 500 internal server...How to Install Proxychains and Access Internet via Proxy in CentOS?
If your Linux machine is behind a proxy server, then you can install Proxychains package to access internet via the given...How to Fix ‘ERROR: WARNING: unable to obtain file audio codec with ffprobe’? [Solved]
Question: I was using youtube-dl command-line utility on CentOS to extract an audio from YouTube Video. However, the command failed with...How to Compile and Install FFmpeg from source in CentOS/RHEL?
I got an ERROR: ffprobe or avprobe not found while installing youtube-dl command-line utility on CentOS. This tutorial will show you on...How to Install or Update autoconf and automake on RHEL/CentOS?
Question: I was installing ffmpeg with Yasm support, during which I need to use autoconf to generate configuration script on...[Solved]: How to Prevent Virtual Machine’s clock Synchronizing with Host machine and Set Independent clock time?
Question: In my CentOS 5 VM (running on Xen server), the date command displays wrong output (as 16 Jun 2015 07:05:11...How to Find Which Package an Executable or File belongs to in RedHat/CentOS/Fedora?
Question: I would like to know if there’s a command in CentOS that allows me to find which package an executable...How to Change the Timezone Settings in Linux?
Question: I would like to know the steps to change the default Timezone in Linux. I have CentOS 6.7 installed and...How to Use RedHat Upgrade Tool to Upgrade CentOS from 6.x to CentOS 7?
Have you been waiting for this? At least, I had been. I’m not a big fan of uninstalling the entire...Python Installation Error – Sorry: UnicodeError: escapes not supported can’t load unicodedata module [Solved]
Question: I was compiling Python from source and during ‘make install’, the installation failed with an error message as Sorry:...How to Fix ‘GPG key retrieval failed’ Error during YUM Install?
I was trying to install a package using yum and hit with an error : GPG key retrieval failed: [Errno 5] OSError:...Dwarf Error: found dwarf version ‘4’, this reader only handles version 2 information [Solved]
I was trying to compile latest version of ‘tar‘ (version 1.28) from source. The ./configure script exited with an error...How to Compile and Install Python3.5 and Python-pip from Source on CentOS
Hi, I recently followed your guide to install Python-pip on my CentOS Box. As you had told in the article,...How to install NCurses Disk Usage (ncdu) similar to ‘du’ on Linux
Ncdu is a disk usage analyzer based on ncurses. It provides a disk usage summary in a TUI (Text user...How to Scan your Linux Box for Trojan, Malware and Virus using ClamAV
This tutorial will take you through the ClamAV installation on CentOS, which can help you to detect Virus, Malware, Trojans...Error while running Volatility software : Failed to import volatility.plugins.malware.svcscan(ImportError: No module named Crypto.Hash) [Solved]
Question: Recently, I was installing Linux Memory Extractor (LiME) to acquire memory dump on CentOS virtual machine, including the Volatile...7 Ways to Detect Virtualization from your VM [Xen,VirtualBox,KVM,OpenStack with KVM]
At Techglimpse we frequently receive mails from our readers asking us to write a tutorial on ‘Virtualization Detection’ from a VPS or...Yum Install Error – Insufficient space in download directory [Solved]
Question: Hi, I was using ‘yum‘ command to install ‘lshw‘ package on CentOS virtual machine. Unfortunately, the command failed with...[Linux]: How to copy files/directories without overwriting the files that are already copied!
Question: Recently I had to copy huge number of files occupying storage space of 7TB to another location on my CentOS...