Miscellaneous Commands

Various commands that I find myself searching for far too often.

Git

Add sections of a file

git add --patch <filename>

Redirect stdout and stderr to File

command > output.txt 2>&1
# or as of Bash 4
command &> output.txt

Create a USB Installer for a Linux Distro

diskutil list # to find the target USB drive
diskutil unmountDisk /dev/diskN
sudo gdd if=Downloads/debian-live-10.0.0-amd64-gnome.iso of=/dev/diskN bs=1M status=progress

Check all open ports on a host

# -v    verbose
# -sT   scan TCP ports
# -p-   scan all 65535 ports
sudo nmap -v -sT -p- <host_name>

Scan all IP Addresses on the Network in a Range

# wildcard
sudo nmap -sn 10.1.2.*
 
#range
sudo nmap -sn 10.1.2.0-128

Run a script in the background

Allows you to ssh into a server, run a script in the background, and exit.

nohup <your command here> &

To kill the command find the process ID with

ps -ef | grep <some search term>

and kill the command with

sudo kill -9 <pid>

Install Debian on Lenovo x120e

For lack of a better place to note this...

Boot into recovery mode.
Find the name of the network interface with ip link show.
Run dhclient enp1s0 to get the ethernet working.

Update the sources in /etc/apt/sources.list.

deb http://ftp.us.debian.org/debian/ testing main non-free contrib
deb-src http://ftp.us.debian.org/debian/ testing main non-free contrib

Update and upgrade and install some firmware.

apt-get update -y
apt-get upgrade -y
apt-get install firmware-amd-graphics

Anaconda

Create a Python environment

conda create -n dsfs python=3.7
source activate dsfs
source deactivate

List Existing Environments

conda env list

Create an R environment

conda create -n r_env r-essentials r-base
# Activate the environment:
conda activate r_env
# List the packages in the environment:
conda list

gregpaton08 / misc-commands