Tag Archives: linux tutorials

How to find out AES-NI (Advanced Encryption) Enabled on Linux System

How to find out AES-NI (Advanced Encryption) Enabled on Linux System

The Intel Advanced Encryption Standard (AES) or New Instructions (AES-NI) engine enables extremely fast hardware encryption and decryption for openssl, ssh, vpn, Linux/Unix/OSX full disk encryption and more. How do I check support for Intel or AMD AES-NI is loaded in my running Linux in my Linux based system including openssl?
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How to find out Mac OS X operating system version information from Terminal command prompt

How to find out Mac OS X operating system version information from Terminal command prompt

I use ssh client to login into my Mac Min server without GUI. How can I tell what version of Mac OS X operating system am I using command prompt? How do I find out Mac OS X version from Terminal app bash shell?
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Debian / Ubuntu Linux Delete Old Kernel Images Command

Debian / Ubuntu Linux Delete Old Kernel Images Command

I‘m a new Ubuntu Linux user and noticed that old kernel still exists in my system. Why doesn’t Ubuntu remove old kernels automatically? How do I delete old unused kernel images to free disk space. How to remove unused old kernel images on Ubuntu Linux safely?
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How To See Characteristics of File Systems on Linux or Unix

How To See Characteristics of File Systems on Linux or Unix
How do I display the characteristics of file systems such as inodes, blocks, block size, file system name, state, lifetime writes, fsck status and more on Linux or Unix-like operating system?
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Book Review: FreeBSD Mastery – ZFS

Book Review: FreeBSD Mastery – ZFS
FreeBSD ZFS BookOnce again a great FreeBSD book to read. I was anxious to read this after reading FreeBSD Mastery- Storage Essentials 2014. I read where he was writing a ZFS book, but didn’t know it was out until I was asked to review it. I loved the introduction, being into hardware and history, it was such great knowledge. I knew some of this information prior, no where near as in depth as these authors covered. The style is so easy to read and mentally kind, it’s always a pleasure to read. Of course ZFS has been used in other Oses (such as Solaris and Linux) and while it is not new to FreeBSD, many people are either afraid of it because they are moving from Linux or they have heard negative things about it.
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How To Update Apple OS X Using Command Line Software Update Tool

How To Update Apple OS X Using Command Line Software Update Tool

How do I install software updates from the command line tool on my Apple Mac OS X computer? How can I remotely update my Apple computer by just sshing into a system? Is there is something like apt-get command or yum command for Apple OS X?
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