# Nix
|  | A **Unix-like** operating system is one that behaves in a manner similar to a Unix system, although not necessarily conforming to or being certified to any version of the Single UNIX Specification. A Unix-like application is one that behaves like the corresponding Unix command or shell. Although there are general philosophies for Unix design, there is no technical standard defining the term, and opinions can differ about the degree to which a particular operating system or application is Unix-like. |
|-|-|
| | wikipedia:: [Unix-like](https://en.wikipedia.org/wiki/Unix-like) |
- [[POSIX]]
- [[My Linux Configuration]]
- [[Darling (Linux)]]
## [[Nix Distributions]]
## [[Shell]]
## System
- Everything is a file
- directories are files, keyboards (are represented by a file), hard drives, etc.
### System Freeze
- REISUB
### Shutdown & Reboot
- shutdown
- halt
- reboot
- -h now
- Shutdown and stay off
- -r now
- Reboot
### OS
- cat /proc/version
- version of unix
- cat /etc/os-release
- cat /etc/\*-release file
- uname
- name of OS’s kernel
- -a
- lsb\_release -a
### Startup Message
- Display Ip Address on Startup
- On CentOS 7 and Debian 8 (and maybe other as well), just append the following line to /etc/issue My IP address: \\4 and that will resolve to the machine's IPv4 address. If you have multiple network interfaces and you want to pick one specific, you can specify it with My IP address: \\4{eth0}
### X
- Virtual Terminals
- Ctrl-alt-F1-F6
- Start a numbered virtual terminal
- Ctrl-alt-F7
- Exit
### Commands
- startx
- the original way to launch the desktop environment/GUI from the terminal
- neofetch
great looking way to capture your system’s info, OS, CPU, etc. and share
it easily (Linux, Mac, Windows)
- [[hostnamectl]]
- [[hostname]]
- [[host]]
- [[mail command]]
- uptime
## Hardware
### Commands
- cat /proc/cpuinfo
- cat /proc/meminfo
- cpu temp
- cat /sys/class/thermal/thermal\_zone0/temp ? didn’t work
- lmsensors app
- sudo sensors-detect to setup lmsensors
- then sensors to run it
- screenfetch
- hardinfo
- lshw
- -short
- -html > sysinfo.html
- lscpu
- lspci
- lsusb
- free
- arch
## [[Nix Services, Processes, & init System]]
## [[Nix Data]]
### [[nix Files & Directories]]
## [[Shell Text Processing]]
## [[nix Networking & Internet]]
## [[nix Users, Permissions, & Ownersuip]]
## [[nix Apps & Packaging]]
### [[nix GUI Apps]]
## Security & Privacy
## Windows
### [[Windows Subsystem for Linux]]
### [[Git Bash]]
## Sources
- NixCraft https://www.cyberciti.biz
- Ryans Tutorials http://ryanstutorials.net
- https://www.udacity.com/course/shell-workshop--ud206
## Inbox
- [[Headless Chrome]]
- nohup
- run a command with no hangups
- dmesg
- to check the kernel log for anything odd