How do I remove and delete a UFW firewall rule running on Ubuntu or Debian Linux?
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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?
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How do I install vnstat network traffic monitor on Fedora Linux system to monitor my hourly, daily, weekly, and monthly bandwidth usage?
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I am trying to delete a directory in Linux using the rmdir dir1 command. But, I am getting an error that read as follows:
rmdir: failed to remove `dir1': Directory not empty
How do I force remove and delete a directory in Linux?
A new version of the Raspberry PI 4 model has been released, and it is incredible update over the older model. A few years ago, I got Raspberry Pi 3 . It was my first 64-bit ARM board. It came with a 64-bit CPU. Here are the complete specs for an updated 64-bit credit card size Raspberry PI 4 desktop computer level of performance.
The post Raspberry PI 4 Released – Complete specs and pricing appeared first on nixCraft.
I am a new Linux system admin. How do I obtain the number of CPUs and cores in the Linux system from the command line? How do I determine the number of CPUs on Linux?
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I need to check if a directory exists or not, within a shell script running on Linux or Unix-like system? How do I check if a directory exists in a shell script?
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I am new to Linux programming and bash shell commands. I have a folder structure as dir1, dir2, dir3 and I would like to rename it as dir001, dir002, dir003. How do you rename multiple folders in Linux?
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I do not wish to use Google Authenticator or Authy app that generates 2 step verification (2FA) codes on my iOS/Android phone. Is there any way I can produce 2FA codes from Linux command line for popular sites such as Gmail, Twitter, Facebook, Amazon and more?
The post Use oathtool Linux command line for 2 step verification (2FA) appeared first on nixCraft.
I am a new sysadmin for the Ubuntu operating system. How do I check running process in Ubuntu using the command line option?
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I am a new Linux system user. I need to find out which process is listening on a port on Linux using the command line. How do you find out which process is listening on a port on Linux operating systems?
Can you explain bash exit status code? How do I set bash exit status in my Linux shell scripts?
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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?
Linus Torvalds the creator and the principal developer of the Linux kernel announced the release of Linux kernel version 5.0. This release increases the major kernel version number to 5. from 4.x. The new change does not mean anything and does not affect programs in any way. From the mailing list:
Te overall changes for all of the 5.0 release are much bigger. But I'd like to point out (yet again) that we don't do feature-based releases, and that "5.0" doesn't mean anything more than that the 4.x numbers started getting big enough that I ran out of fingers and toes.
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I installed OpenVPN VPN solutions on Ubuntu for my businesses to secure all data communications. I also set up Pin-hole ad blocker on Ubuntu server along with OpenVPN. How do I force Pi-hole to use Cloudflare DNS over HTTPS (DoH) to increase my privacy and security by preventing eavesdropping and manipulation of DNS data by man-in-the-middle attacks?
The post Configure Ubuntu Pi-hole for Cloudflare DNS over HTTPS appeared first on nixCraft.
I am trying to install package and doing some other work. But, getting the error that read as "perl: warning: Setting locale failed. perl: warning: Please check that your locale settings:" How do I fix this problem on my Debian Linux server?
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The Canonical LTD has released an updated version of its long term support (LTS) Linux distribution Ubuntu Linux 18.04.02. You must upgrade to get corrections for security problem as this version made a few adjustments for the severe issue found in Ubuntu version 18.04.02. The Ubuntu LTS enablement (also called HWE or Hardware Enablement) stacks provide newer kernel and X support for existing Ubuntu LTS releases. These enablement stacks can be installed manually but are also available when installing with Ubuntu LTS point release media. These newer enablement stacks are meant for desktop and server and even recommended for cloud or virtual images.
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