Viewing: Link

Patch your FreeBSD server for openssh vulnerabilities [11/Jan/2017]

OpenSSH is critical for both sysadmin and programmers. It is an implementation of the SSH protocol suite, from OpenBSD project. It provides an encrypted session to your server. OpenSSH has multiple vulnerabilities as of 11th January 2017 running on FreeBSD operating system. From the advisory: The ssh-agent(1) agent supports loading a PKCS#11 module from outside […] Read More

How to speeding up SSH session creation

You can reuse OpenSSH connections to the same server when you want to open subsequent connections to the same server. For example, if I ran ssh, the ssh client will establish a new SSH connection. It usually takes only a few seconds. However, if I run ssh command again, connecting to a […] Read More

Why HTTPS for Everything?

HTTPS enables privacy and integrity by default. It is going to be next big thing. The internet’s standards bodies, web browsers, major tech companies, and the internet community of practice have all come to understand that HTTPS should be the baseline for all web traffic. Ultimately, the goal of the internet community is to establish […] Read More

Awesome Git Commands & Best Practices Cheat Sheet For Sysadmin and DevOPS

Git is a version control system (VCS) for tracking changes in computer files and coordinating work on those files among multiple people. It is primarily used for software development, but it can be used to keep track of changes in any files. This cheat-sheet is useful for both sysadmins and programmers/devops peeps. You can download […] Read More

A list of online tutorials and resources to help you learn bash shell

Bash (Bourne-Again SHell) is a Linux and Unix-like system shell or command language interpreter. It is a default shell on many operating systems including Linux and Apple MacOS X. Shell scripts are a fundamental part of the Unix programming environment. Here are a list of tutorials and helpful resources to help you learn bash scripting […] Read More

How to change default shell in Linux

Want to change the default shell in Linux/Unix/MacOS? Try: chsh -s /path/to/shell user For example, set the shell to /usr/local/bin/zsh for user tom, enter: which zsh chsh -s /usr/local/bin/zsh tom For more information see Howto: Changing Linux Login Shell […] Read More

Issue #1

{PHP} PHP 7.0.13 released {Debian} Debian 9 drops support for powerpc {Security} A fake SSH server that lets everyone in and logs their activity {Docker} Docker in production: A history of failure {Editor} Buttery smooth Emacs {Kernel} The status of Linux kernel hardening {Hardware} Warning: 2016 MacBook Pro is not compatible with Linux. You should […] Read More

Touch ID Support for sudo in MacOS Terminal for MacBook Pro

Well, that was fast. Touch ID is a fingerprint recognition security feature, designed and released by Apple. It is currently available on the iPhone 5s/6/7 and Macbook pro-2016 editions. Many consider it as a huge security win for the MacBook Pro's. This sounds amazing feature for command line users. sudo-touchid is a fork of sudo […] Read More

Find the oldest file in Unix or Linux file system

So I wanted to know the oldest file on my Debian Linux box. find / -type f -printf '%T+ %p\n' | sort | head -n 1 Here is an another example for /etc/ find /etc/ -type f -printf '%T+ %p\n' | sort | head -n 10 So find command finds all files in / and […] Read More

Forcefully mark down pfSense wan gateway as down

From the article: I have two internet connections (fiber and 4G LTE) configured in load balanced mode using pfSense FreeBSD based firewall. One of my wan connection is running out of bandwidth quota. How can I force and turn off this interface to save bandwidth until month end and enable it again from next billing […] Read More

1 2