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À partir d’avant-hiernixCraft

How to install less on CentOS / RHEL / Fedora

Par : Vivek Gite

One of my PHP and bash scripts depends upon less command to display the help system to other users. But, whenever they run less on a particular version of CentOS or RHEL cloud server, they get an error that reads as: "bash: less: command not found." How do I install less utility on CentOS or RHEL (Red Hat Enterprise Linux)/Fedora Linux server? How can I configure Linux containers such as Docker or Podman to install less automatically?

The post How to install less on CentOS / RHEL / Fedora appeared first on nixCraft.

Set up automatic unattended updates for Ubuntu 20.04

Par : Vivek Gite

How do I configure automatic unattended updates for Ubuntu Linux 20.04 LTS "Focal Fossa" server?

The post Set up automatic unattended updates for Ubuntu 20.04 appeared first on nixCraft.

How to install htop on Arch Linux

Par : Vivek Gite

I am a new user of Arch Linux operating system. How do I install htop on Arch Linux using the pacman command?

The post How to install htop on Arch Linux appeared first on nixCraft.

apt-get hold back packages on Ubuntu / Debian Linux

Par : Vivek Gite

How do I hold back packages on an Ubuntu / Debian Linux to prevent updating of a specific package? How can I blacklist package updates using the apt command/apt-get command?

The post apt-get hold back packages on Ubuntu / Debian Linux appeared first on nixCraft.

How to get source code of package using the apt command on Debian or Ubuntu

Par : Vivek Gite

I need source code of code of package installed using the apt-get command or apt command on Debian or Ubuntu. How do I get or download source code of package on a Debian or Ubuntu system? How can I download Ubuntu/Debian package's source code?

The post How to get source code of package using the apt command on Debian or Ubuntu appeared first on nixCraft.

OpenSUSE install lsof package to get rid of ‘zypper ps’ errors

Par : Vivek Gite

I run the following command but getting error:
$ zypper ps
    Check failed:
    Please install package 'lsof' first.

How do I fix this error? How can I use the 'zypper ps' command on SELS/OpenSUSE 15.1/15.2 to find out if system reboot requires or not?

The post OpenSUSE install lsof package to get rid of ‘zypper ps’ errors appeared first on nixCraft.

Ubuntu 20.04 update installed packages for security

Par : Vivek Gite

I am a developer and using Ubuntu 20.04 LTS Linux server for my projects. I need to update installed packages for security on Ubuntu Linux 20.04 LTS server. How do I update my Ubuntu system using and validate that security patches are applied? Keeping your Ubuntu server system, kernel, docker, and the installed application is … Continue reading "Ubuntu 20.04 update installed packages for security"

The post Ubuntu 20.04 update installed packages for security appeared first on nixCraft.

Ubuntu 20.04 LTS Set Up OpenVPN Server In 5 Minutes

Par : Vivek Gite

I am a new Ubuntu Linux 20.04 LTS server system administrator. How can I set up an OpenVPN Server on an Ubuntu Linux version 20.04 LTS server to shield my browsing activity from bad guys on public Wi-Fi, encrypt all traffic while connecting to 4G LTE network, and more?

The post Ubuntu 20.04 LTS Set Up OpenVPN Server In 5 Minutes appeared first on nixCraft.

How To Create a Sudo User on Ubuntu 20.04 LTS

Par : Vivek Gite

How do I create a new user with sudo access on Ubuntu 20.04 LTS Linux server? Can you tell me command to add sudo user on Ubuntu 20.04 Linux server?

The post How To Create a Sudo User on Ubuntu 20.04 LTS appeared first on nixCraft.

Linux uninstall package / software using the CLI

Par : Vivek Gite

How do I uninstall package or software using the command line in Linux operating systems? How can I uninstall software on a Debian or Ubuntu Linux? Can you tell me command to uninstall package on a CentOS/RHEL/Oracle/Fedora Linux?

The post Linux uninstall package / software using the CLI appeared first on nixCraft.

CentOS 8 Set Up OpenVPN Server In 5 Minutes

Par : Vivek Gite

How do I set up an OpenVPN Server on CentOS 8 Linux server to shield my browsing activity from bad guys on public Wi-Fi, and more?

The post CentOS 8 Set Up OpenVPN Server In 5 Minutes appeared first on nixCraft.

How to Install phpredis on CentOS 8 / RHEL 8

Par : Vivek Gite

How do I install PHP extension called phpredis (php-redis) for interfacing with Redis cluster on CentOS 8 or RHEL 8?

The post How to Install phpredis on CentOS 8 / RHEL 8 appeared first on nixCraft.

Ansible apt update all packages on Ubuntu / Debian Linux

Par : Vivek Gite

I have a bunch of servers powered by Ubuntu and Debian Linux. How do I update all of them using the apt module of Ansible? How can I use Ansible for system updates and reboot the box when kernel upgrades took place?

The post Ansible apt update all packages on Ubuntu / Debian Linux appeared first on nixCraft.

OpenSUSE install sudo to execute commands as root

Par : Vivek Gite

There is no sudo installed by default on my OpenSUSE Linux server. Other users and I need to use 'su -' command to run commands as root. How do I install a sudo package on OpenSUSE Linux?

The post OpenSUSE install sudo to execute commands as root appeared first on nixCraft.

Explain DEBIAN_FRONTEND apt-get variable for Ubuntu / Debian

Par : Vivek Gite

Can you explain DEBIAN_FRONTEND apt or apt-get variable? How and why I need to use this in Docker or shell scripts under a Debian and Ubuntu Linux?

The post Explain DEBIAN_FRONTEND apt-get variable for Ubuntu / Debian appeared first on nixCraft.

Add a new user account with admin access on Linux

Par : Vivek Gite

How do I add a user account with admin (sudo) access on Ubuntu or CentOS Linux cloud server? How can I add a new user with admin account level access in Linux?

The post Add a new user account with admin access on Linux appeared first on nixCraft.

CentOS 8 update installed packages for security

Par : Vivek Gite

I need to update installed packages for security on CentOS 8.x (CentOS Enterprise Linux) server. How can I update my CentOS 8.x system using yum command?

The post CentOS 8 update installed packages for security appeared first on nixCraft.

How to install tar on RHEL/CentOS 6/7/8 using yum

Par : Vivek Gite

I am trying to extract a file using 'tar xvf file.tar.gz' syntax, but I am getting an error:
bash: tar: command not found
How do I fix this problem? How can I install tar on a CentOS/RHEL version 8, 7 or 6 desktop using yum command?

The post How to install tar on RHEL/CentOS 6/7/8 using yum appeared first on nixCraft.

How to install htop on OpenSUSE Linux using zypper

Par : Vivek Gite

I am a new sysadmin of OpenSUSE Linux operating system. How do I install htop on OpenSUSE using the zypper command?

The post How to install htop on OpenSUSE Linux using zypper appeared first on nixCraft.

Add / Create a Sudo User on CentOS Linux 8

Par : Vivek Gite

How do I add / create a sudo user on CentOS Linux 8 using the command line?

The post Add / Create a Sudo User on CentOS Linux 8 appeared first on nixCraft.

How to add or mount directory in LXD (Linux container)

Par : Vivek Gite

I have two LXD containers running. One is for Nginx, and another is for processing data. I need to share data between two containers. How do I add or mount a shared directory between two?

The post How to add or mount directory in LXD (Linux container) appeared first on nixCraft.

How to check and list installed packages in CentOS Linux

Par : Vivek Gite

How do I check installed packages in CentOS Linux version 6.x/7.x/8.x? How can I List installed packages on CentOS Enterprise Linux server?

The post How to check and list installed packages in CentOS Linux appeared first on nixCraft.

Linux shell script to reduce PDF file size

Par : Vivek Gite
Here is a handy and useful Linux and Unix shell script that reduce PDF file size using Ghostscript. No need to upload your PDF file to the shady third-party website. Just do it from the terminal. I tested it with both CentOS and Ubuntu/Debian Linux.

How to Create a new user account in CentOS 7/8

Par : Vivek Gite

How do I create a new user account on CentOS 7/8 Linux server using command-line options? How do I create a new user account with sudo access on CentOS 8 Linux server?

The post How to Create a new user account in CentOS 7/8 appeared first on nixCraft.

bash: file: command not found. How to install file

Par : Vivek Gite

I am running file /usr/sbin/arp command on a Debian VM minimal but getting an error that read as:
bash: file: command not foundHow do I fix this error on a Debian or Ubuntu Linux system? How can I install file command on Linux cloud?

The post bash: file: command not found. How to install file appeared first on nixCraft.

Delta RPMs disabled because applydeltarpm not installed

Par : Vivek Gite

I am getting the following warning on both CentOS 7 and RHEL (Red Hat) 7 when I run yum command:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
What is delta RPM (DRPM) and how does it differ from RPM? How do I fix this issue on a CentOS or RHEL 7 server/desktop?

The post Delta RPMs disabled because applydeltarpm not installed appeared first on nixCraft.

How to install htop on Amazon Linux AMI

Par : Vivek Gite

I am a new user of Amazon Linux AMI operating system. How do I install htop on Amazon Linux AMI using the yum command?

The post How to install htop on Amazon Linux AMI appeared first on nixCraft.

Amazon Linux AMI install mysql client programs for RDS

Par : Vivek Gite

How do I install mysql command for management Amazon RDS or Managed Databases for Amazon Lightsail on Amazon Linux AMI?

The post Amazon Linux AMI install mysql client programs for RDS appeared first on nixCraft.

Change netplan renderer from networkd to NetworkManager

Par : Vivek Gite

I prefer to use NetworkManager on my Ubuntu desktop, but currently, it is using networkd. As a result, I cannot set up or configure NetworkManager using GUI tools. Is there anyway to change netplan renderer from networkd to NetworkManager running on Ubuntu Linux? How can I change netplan renderer in Ubuntu Linux?

The post Change netplan renderer from networkd to NetworkManager appeared first on nixCraft.

How to install whois on RHEL 8 / CentOS 8

Par : Vivek Gite

I deployed RHEL 8 in the cloud server. However, I am unable to find the whois command on my newly created RHEL 8 Linux server. It says '-bash: whois: command not found' I tried yum install whois, but it failed too. How do I install whois command on RHEL/CentOS 8 Linux using the command line?

The post How to install whois on RHEL 8 / CentOS 8 appeared first on nixCraft.

CentOS 8 dig command not found – How to install dig on CentOS 8

Par : Vivek Gite

I deployed minimal version of CentOS 8 in the cloud server. However, I am unable to find the dig command on my newly created CentOS 8 Linux server. It says '-bash: dig: command not found' I tried yum install dig, but it failed too. How do I install dig command on CentOS 8 Linux using the command line?

The post CentOS 8 dig command not found – How to install dig on CentOS 8 appeared first on nixCraft.

How to install wget on CentOS 8 using the yum/dnf command

Par : Vivek Gite

I am a new CentOS Enterprise Linux 8 user. How do I install wget on CentOS 8 using the dnf command or yum command?

The post How to install wget on CentOS 8 using the yum/dnf command appeared first on nixCraft.

How To Enable and Install EPEL Repo on CentOS 8.x

Par : Vivek Gite

How do I install the extra repositories such as Fedora EPEL repo on a CentOS Enterprise Linux server version 8.x? How to enable EPEL repo on CentOS 8.x?

The post How To Enable and Install EPEL Repo on CentOS 8.x appeared first on nixCraft.

How to add users on FreeBSD using adduser or pw

Par : Vivek Gite

I am a new FreeBSD system administrator. How do I add users on FreeBSD Unix operating systems using command line?

The post How to add users on FreeBSD using adduser or pw appeared first on nixCraft.

Amazon Linux AMI update installed packages for security

Par : Vivek Gite

I would like to update installed packages for security on Amazon Linux AMI server running in the cloud. How can I update my Amazon Linux AMI system using yum command?

The post Amazon Linux AMI update installed packages for security appeared first on nixCraft.

RHEL 8 update installed packages for security

Par : Vivek Gite

I would like to update installed packages for security on RHEL 8.x (Red Hat Enterprise Linux) server. How can I update my RHEL 8.x system using yum command?

The post RHEL 8 update installed packages for security appeared first on nixCraft.

How to install htop on FreeBSD

Par : Vivek Gite

I am a new user of FreeBSD operating system. How do I install htop on FreeBSD using the pkg command?

The post How to install htop on FreeBSD appeared first on nixCraft.

FreeBSD Applying Security Updates Using pkg/freebsd-update

Par : Vivek Gite

I am a new FreeBSD developer and user. I have root access to my VM running in AWS cloud. How do I update packages and apply security upgrades on FreeBSD? What is the procedure for applying security updates on FreeBSD?

The post FreeBSD Applying Security Updates Using pkg/freebsd-update appeared first on nixCraft.

How To Install EPEL Repo on an RHEL 8.x

Par : Vivek Gite

How do I install the extra repositories such as Fedora EPEL repo on an Red Hat Enterprise Linux server version 8.x?

The post How To Install EPEL Repo on an RHEL 8.x appeared first on nixCraft.

How to check CPU temperature on Ubuntu Linux

Par : Vivek Gite

How do I check CPU temperature in Ubuntu Linux using a command line and GUI tools on my Thinkpad laptop or Desktop computer?

The post How to check CPU temperature on Ubuntu Linux appeared first on nixCraft.

How to install htop on Ubuntu Linux using apt

Par : Vivek Gite

I like htop output, but it is not installed by default on my Ubuntu cloud server. How do I install htop on Ubuntu Linux 18.04 LTS server?

The post How to install htop on Ubuntu Linux using apt appeared first on nixCraft.

Debian 10 Set Up OpenVPN Server In 5 Minutes

Par : Vivek Gite

I am a new Debian Linux 10 server user. How do I set up an OpenVPN Server on Debian Linux version 10 server to shield my browsing activity from bad guys on public Wi-Fi, and more?

The post Debian 10 Set Up OpenVPN Server In 5 Minutes appeared first on nixCraft.

How to upgrade Debian 9 to Debian 10 Buster using the CLI

Par : Vivek Gite

I have Debian 9.x installed on AWS EC2. How do I upgrade Debian 9 Stretch to Debian 10 Buster using the apt command/apt-get command CLI? How can I upgrade Debian 9 to Debian 10 using ssh client?

The post How to upgrade Debian 9 to Debian 10 Buster using the CLI appeared first on nixCraft.

How to upgrade Fedora 29 to Fedora 30

Par : Vivek Gite

How do I upgrade to Fedora 30 from Fedora 29 Using the dnf command? How can I update F29 to F30? Can you tell me the procedure to upgrade Fedora 29 to Fedora 30?

The post How to upgrade Fedora 29 to Fedora 30 appeared first on nixCraft.

RHEL 8 install Python 3 or Python 2 using yum

Par : Vivek Gite

I need to install Python 3 for Ansible IT automation tool on RHEL 8. How do I install Python 3 on RHEL 8? Is it possible to install Python 2 for legacy apps on RHEL 8?

The post RHEL 8 install Python 3 or Python 2 using yum appeared first on nixCraft.

How to install htop on Alpine Linux using apk

Par : Vivek Gite

I am a new user of Alpine Linux. How do I install htop on Alpine Linux using the apk command?

The post How to install htop on Alpine Linux using apk appeared first on nixCraft.

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