Quick Tip: Turn off the login banner in Linux or Unix .hushlogin file
Did you know? You can turn off the banner in Linux or Unix using a particular file. When you log in using ssh or other methods, you will find tons …
cpufetch – awesome CPU architecture info tool for Linux and macOS
Typically we use the lscpu command or /proc/cpuinfo command on Linux to check CPU information. I recently found another simplistic yet fancier CPU architecture fetching tool inspired by neofetch, pfetch …
How to install ncdu on Linux / Unix to see disk usage
The du (disk usage) command summarizes directory trees’ sizes, including all of their contents and individual files’ sizes on Linux and Unix-like systems such as macOS. It helps track down …
Debian Linux 10.9 released and here is how to upgrade it
The Debian GNU/Linux project has released an updated version of its stable Linux distribution Debian 10 (“buster”). You must upgrade to get corrections for security problem as this version made …
Interview with curl creator and Swedish software developer Daniel Stenberg
Even if you do not use the curl command daily, the chances are high that you are still using curl and don’t know. IoT and tons of other services on …
How to enable LUKS disk encryption with keyfile on Linux
We can easily add a key file to LUKS disk encryption on Linux when running the cryptsetup command. A key file is used as the passphrase to unlock an encrypted …
Critical bug in sudo puts Linux and Unix systems at risk
Any logged-in unprivileged user can abuse an old bug in sudo to gain root privileges. It was rated as an important security issue for Linux and Unix-like operating systems. The …
How to unlock LUKS using Dropbear SSH keys remotely in Linux
On Linux, we encrypt our partitions and entire disk using Linux Unified Key Setup-on-disk-format (LUKS) for security and privacy reasons. We unlock LUKS protected disk by providing a passphrase at …
How to change LUKS disk encryption passphrase in Linux
We use encryption to protect mobile devices. For instance, I always use LUKS disk encryption to protect all files stored on my SSD. Dm-crypt (Cryptsetup and LUKS) open-source disk encryption …
GNU/Bash 5.1 released with the random ${SRANDOM} number engine
Current GNU/Bash maintainer Chet Ramey announced the latest major release, Bash 5.1, on December 7th, 2020. Bash is the default shell on many Linux distros and popular among developers, especially …