The word we say almost everything and everywhere. The question we have to double check when implementing new feature. It’s a kind of work allows to sleep calmly. Yes, this is security.
Category Archives: Operating systems
How to setup Dropbox on Linux server
This post keeps tutorial character. The goal – explain easy way to sync data between Linux and remote location. With further opportunity to reach them from every point of world.
Deal with NVIDIA drivers on Fedora
Sometimes NVIDIA users faced with driver problem trying to successfully setup Linux on workstations. Linux kernel includes open source driver, but sometimes it isn’t fully eligible for videocards. The old ones in particular. Some days ago I felt the same thing trying to step up to Fedora 24 & 4.6 kernel. I guess it could happen with any rpm-based distro like CentOS, ROSA etc..
How to enable multicast on Linux network interface
There is a myriad of webpages about this question. But here is just my way of look at it. Multicast customization is not too tricky, but I’d like to explain how and why it works.
Cheatsheet: Linux system variables
Many people think that the problem of application performance, security and networking lies in supported services. Like Nginx is proxying too slow or remote DBMS cannot see my network. Frequently the problem in OS. Default values of system settings can restrict our environment to make the service jobs quick and simple. The best way to change your system configuration – change the system variables.
20 useful Bash scripting tricks
We cannot count a Bash as a high-level programming language. Bash scripts don’t perform complicated calculations, hardware access and so on. But we can use it for Linux systems management and orchestration. We’re able to automate routine tasks, wrap CLI applications and just make some fun.
Cheatsheet: .bashrc
File ~/.bashrc is a simple configuration of Linux user where user can describe all shell instructions necessary for each session. It’s a frequent practice to leave useful command at this file, but aliases and functions looks much more suitable for this configuration file.
5 useful Linux shell applications you may have never seen
Few weeks ago I’ve posted Linux command line utilities list trying to make shell jobs faster. But also there is a vast choice of entertainment applications. Their purposes have a little bit different context. They can replace enormous GUI programs or simply save you from web-browser usage. What could be better to get all features staying on the shell?
Cheatsheet: iptables
iptables is Linux firewall standard. You can easily open and close network connections through it. Actually it’s pretty easy, but sometimes we can’t remember any flags and commands to create firewall rules. Here is a cheatsheet table constituted by all necessary iptables rules for novices. I’ll try to update it once in a while.
20 useful Linux shell utilities you may have never seen
If you totally get to the bottom of Linux shell – you’ll agree that it’s a powerful environment. Understanding of things like text manipulators, system utilities etc. makes a great deal in operations performance. But sometimes we have a desire to simplify command line toolkit. Days go by and we’re starting to notice that some mechanisms could be better. Command history search is complicated. “du” scrolling doesn’t show up a descriptive filesystem usage statistics. And sometimes instead of command line we’re picking GUI programs. Despite of we know this way as less productive.
