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Firefly 3 is a self hosted finance tracking application.  

Planka is a self hosted 'to-do-list' application.

Authelia is a 2FA application that I use for protecting access to my web apps.

show arp cache arp -a 

Command syntax will vary between MySQL Versions ==================================================================================== User Management Show all users and hosts SELECT user, host FROM mysql. user; Add User CREATE USER 'name'@'localhost' IDEN...

==================================================================================== Ensure that the nginx 'ngx_http_realip_module' is installed: nginx -V 2>&1 | grep --color -o 'http_realip_module' 2. Create a new file, for example /etc/nginx/cloudflar...

==================================================================================== WP-CLI Installation guide ------------------------------------------------------------------------------------------------------------------------------------------------ D...

------------------------------------------------------------------------------------------------------------------------------------------------ Logging interval To change ATOP's logging interval edit the below file: vim /usr/share/atop/atop.daily In here,...

==================================================================================== Client chowned their server? did you chown a clients server? Never fear, facl is here. https://kb.ukfast.net/Linux_file_permissions ========================================...

==================================================================================== FHS as defined by RedHat: ------------------------------------------------------------------------------------------------------------------------------------------------ /...

==================================================================================== LVM, or Logical Volume Manager, is a tool used on Linux systems to manage disk space in a more flexible way compared to traditional partitioning. It acts like a layer of abst...

==================================================================================== This page details the storage concepts for a linux system. ------------------------------------------------------------------------------------------------------------------...

==================================================================================== CHROOT (Changed Root) Jail CHROOT essentially means that a user or application has it's root changed, essentially locking it away from the rest of the server filesystem. ...

Line Numbers vim can display line numbers using the below command: :set number Skip to specific line number To skip to line 255: :255 ------------------------------------------------------------------------------------------------------------------------...

==================================================================================== FIND Find is a linux search tool that can be used to find a variety of files based on the given criteria. ------------------------------------------------------------------...

==================================================================================== gzip   ==================================================================================== tar (.tar) - Tape Archive Take multiple files and compress them into a single ...

Pluggable Authentication Modules (PAM) PAM is essentially an authentication system that allows for different modules to be added for support of different authentication methods, as an example; 2fa would be handled by PAM on a Linux system. /etc/security/ ==...

==================================================================================== Linux File Permissions Every file in Linux has permissions, these define which actions can be undertaken by the user,group, and other. As seen on the file below, permission...