nixCraft

How can I find the correct ulimit values for a user account or process on Linux systems? Love this? sudo share_on: TWITTER - FACEBOOK - LINKEDIN - WHATSAPP - REDDIT The post How to f...

https://www.cyberciti.biz/faq/how-to-find-ulimit-for-user-on-linux/

A Ubuntu 24.04 LTS comes with UFW (uncomplicated firewall) that protects the desktop or server against unauthorized access. UFW is an easy-to-use frontend app for a Linux packet filtering sys...

https://www.cyberciti.biz/faq/how-to-set-up-ufw-firewall-on-ubuntu-24-04-lts-in-5-minutes/

I have log files created whenever I patch or rebuild Linux containers. They are taking disk space. The logs are helpful if something fails. Otherwise, after a few weeks, those log files have ...

https://www.cyberciti.biz/faq/how-to-use-find-command-to-delete-all-log-files-created-in-last-90-days-except-for-last-7-days/

An IP alias on Debian, Ubuntu, or any other Linux distros refers to assigning multiple IP addresses to a single network interface. A single network interface card (NIC) can respond to multipl...

https://www.cyberciti.biz/faq/how-to-add-an-ip-alias-to-an-ec2-instance-on-debian-ubuntu-linux/

DNSCrypt-proxy is an open-source and free software designed to encrypt DNS traffic, thus protecting it from eavesdropping and manipulation. This is also useful to evade DNS censorship when DNSCry...

https://www.cyberciti.biz/faq/installing-dnscrypt-proxy-on-debian-linux/

I am a new macOS Unix user. I am writing a small bash shell script. How do I download file directly from the command-line interface using curl? How can I download file with cURL on a Linux or...

https://www.cyberciti.biz/faq/download-a-file-with-curl-on-linux-unix-command-line/

I am a new Linux user. How do I display the process on the Linux based server or desktop/laptop in easy to read tree format using bash shell prompt? Love this? sudo share_on: TWITTER - FACEBOO...

https://www.cyberciti.biz/faq/unix-linux-pstree-command-examples-shows-running-processestree/

The Debian Linux 12 backports repository offers updated versions of software packages for Debian Stable releases. These packages are sourced from Testing (and sometimes Unstable) branches of ...

https://www.cyberciti.biz/faq/install-enable-debian-linux-12-backports-repository/

I need to copy or clone file ownership and permissions from another file on Linux. Is there a bash command line option to clone the user, group ownership and permissions on a file from anothe...

https://www.cyberciti.biz/faq/how-to-copy-permissions-from-one-file-to-another-on-linux/

Bash is a command language interpreter compatible with sh. It can execute commands read from a file or keyboard. On Debian Linux, bash-completion is a set of shell functions that uses Bash's ...

https://www.cyberciti.biz/faq/installing-adding-bash-auto-completion-debian-linux/

Recently, I had a learning experience with cron jobs and acme.sh. acme.sh is an excellent tool that simplifies the management of Let's Encrypt TLS (SSL) certificates. It makes obtaining and r...

https://www.cyberciti.biz/faq/how-to-add-cron-job-entry-for-acme-sh/

Ubuntu 24.04 LTS (Noble Numbat) was launched on April 25th, 2024. This new version will be supported for five years until June 2029. The armhf architecture now provides support for the Year 2...

https://www.cyberciti.biz/faq/how-to-upgrade-from-ubuntu-22-04-lts-to-ubuntu-24-04-lts/

AWS SES (Amazon Simple Email Service) is a cloud-based email-sending service that is both reliable and cost-effective. This service is offered by Amazon Web Services. Postfix is a popular ema...

https://www.cyberciti.biz/faq/howto-configure-aws-ses-with-postfix-mta-on-debian-linux/

When you run the sudo apt update, you may see the following message or error on a Debian Linux: Err:5 http://deb.debian.org/debian buster-backports Release 404 Not Found Reading package li...

https://www.cyberciti.biz/faq/the-repository-http-deb-debian-org-debian-buster-backports-release-no-longer-has-a-release-file/

You can find the timezone in Linux using the command line. The easiest way to do this is to type the "timedatectl" command and look for the "timezone" line when using modern Linux distros wit...

https://www.cyberciti.biz/faq/find-checking-timezone-in-linux-using-command-line/

The DEBSECAN command is an essential tool for developers and sysadmins using Debian or Ubuntu Linux. It analyzes the list of installed packages on the current host and reports any vulnerabili...

https://www.cyberciti.biz/faq/debsecan-command-in-linux-with-examples-syntax/

When you download Debian Linux CD or DVD images, you must verify the authenticity of Debian Linux CD or DVD images using the gpg and sha512sum command. There are three files you will find her...

https://www.cyberciti.biz/faq/verify-downladed-debian-linux-cd-dvd-image-using-gpg/

Btrfs, which stands for "Butter FS" or "B-tree FS," is a modern Linux file system. It was developed to overcome the limitations of older file systems like ext4 or ext3. Btrfs is an excellent ...

https://www.cyberciti.biz/faq/how-to-install-btrfs-on-a-debian-linux-12-11/

GnuPG2 (or GPG2) is an open-source and free tool that implements the OpenPGP standard. Its primary purpose is to encrypt your sensitive information to protect it from unauthorized access. It ...

https://www.cyberciti.biz/faq/installing-gnupg2-on-debian-linux-to-fix-bash-gpg-command-not-found-error/

Sometimes, when you try to install specific Debian Linux packages, you might encounter an error message that reads: UNABLE TO LOCATE PACKAGE PKG-NAME-HERE In many cases, the required package...

https://www.cyberciti.biz/faq/enabling-contrib-repo-in-on-debian-linux/