I got this error sss_cache when trying to add a new user to one of my clients Linux (RedHat 8.10) box. I have never encounter this issue before at any Linux distro I have touched. After brewing a good cup of Caturra coffee variety from my friend’s coffee farm in Chiriqui, Panama I found the …
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What are Bash special parameters is a topic I have been running away from for a while. Not anymore! I finally started getting more into bash scripting basics. Special parameters are predefined variables that Bash automatically creates. You don’t assign values to them. This was something new to me. So, after brewing a good cup …
I recently discover more about the CTRL commands options in Linux. I have to admit, this is something I should have learnt many years ago. I have been using some of these CTRL commands for a while without noticing what they really meant. So, I decided to create this short Linux terminal tutorial for future …
I needed to find how to remove snap and all those packages from my vintage Ubuntu laptop. It all started after trying to boot up and getting the ‘frozen’ Ubuntu logo at boot time. After brewing a nice Catimor coffee at home I discovered there was little storage space left. Why!?? My laptop was turned …
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I have been reviewing some useful commands in Linux during the holidays. Using the xargs command in Linux is one of them. Here are some sysadmin-style examples, simple and useful. Before, writing this I brewed coffee at home using my french press. Coffee inspires me. The xargs command receives input from another command. In simple …
The sed command is one of those commands I have never put enough attention in Linux. A mistake! The sed command (Stream Editor) is a very powerful one to know. It is used to find and replace text patterns. Sed command standard sysntax To replace all instances of Paco with Timo in a file.txt: s/ …
Hola! I decided to put together this compare and contrast the boot order between SystemV and systemd. Contact me if you have any questions. Stage SystemV (SysVinit) systemd Firmware start BIOS or UEFI loads bootloader BIOS or UEFI loads bootloader Bootloader GRUB loads kernel + initramfs GRUB loads kernel + initramfs Kernel start Kernel initializes …
Below are real-world examples practical Linux file management examples you can try on any test server.Every command includes a quick explanation and a useful scenario. But, before trying the below Linux commands, I need to brew a great cup of specialty coffee at home. Directory and File Basics Create a folder for logs files: Create …
This is a very practical topic and it shows up a lot in a real sysadmin life. Filesystem Hierarchy Standard (FHS) in Linux is something every Linux admin should have knowledge of. I tend to forget things very easy. So, after brewing a fine single origin specialty coffee from Latin America I put this practical …
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This is another topic in Linux that usually got me thinking in circles. To Create and change hard and symbolic links in Linux is something I don’t usually do on a daily basis as a Sysadmin. Maybe you don’t either. I decided to brew a great cup of Caturra variety coffee at home before taking …
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