Matt Rozanov mattroz

## List block devices
lsblk

## Linux: operations with files
1. write image to USB:
                                       1.1 sudo umount /dev/sdX
                                       1.2 sudo dd if=/path/to/image.iso of=/dev/sdX bs=4M && sync

## Linux administration
print all environment variables: printenv

## SSH
To copy a file from B to A while logged into B:
`scp /path/to/file username@a:/path/to/destination`

To copy a file from B to A while logged into A:
`scp username@b:/path/to/file /path/to/destination`

## Linux: networks
cat /etc/services - list of network ports and services on 'em

## C programming language tricks & tips
See comments below

## Capture video
ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -qscale 0 /tmp/out.mpg

## Raspberry Camera from console
comments

## Statistics
https://www.youtube.com/watch?v=ANsVodOu1Tg

## Git commands
git commands and tricks in comments |
                                    v
	1. write image to USB:
	1.1 sudo umount /dev/sdX
	1.2 sudo dd if=/path/to/image.iso of=/dev/sdX bs=4M && sync
	To copy a file from B to A while logged into B:
	`scp /path/to/file username@a:/path/to/destination`

	To copy a file from B to A while logged into A:
	`scp username@b:/path/to/file /path/to/destination`