YashasSamaga

DISCLAIMER

This gist is unofficial. It was created for personal use but have kept it public in case it would be of use to others. This document is not updated regularly and may not reflect the current status of the CUDA backend.

austinjp

Wifi on Ubuntu 18 server

TLDR

1. Install wpasupplicant
2. Turn on wifi radios: sudo nmcli radio wifi on
3. Check your devices are recognised even if they're not "managed": sudo iwconfig
4. Check your wifi (here called "wlp3s0") is capable of detecting nearby routers: sudo iwlist wlp3s0 scan
5. Configure netplan by dropping a file called 01-netcfg.yaml into /etc/netplan/ or edit existing file there. See example below.
6. netplan try, netplan generate, netplan apply.

Brainiarc7

Setting up Conky on Ubuntu 16.04LTS for the Clevo P751DM2-G

System Information:

We extract this with inxi:

installation:

sudo apt-get install inxi

leommoore

File Magic Numbers

Magic numbers are the first bits of a file which uniquely identify the type of file. This makes programming easier because complicated file structures need not be searched in order to identify the file type.

For example, a jpeg file starts with ffd8 ffe0 0010 4a46 4946 0001 0101 0047 ......JFIF.....G ffd8 shows that it's a JPEG file, and ffe0 identify a JFIF type structure. There is an ascii encoding of "JFIF" which comes after a length code, but that is not necessary in order to identify the file. The first 4 bytes do that uniquely.

This gives an ongoing list of file-type magic numbers.

Image Files