Bash

List of running services:

$ systemctl --type=service
$ systemctl --type=service --state=active/running

copy files and directories to a destination, allows copying to remote locations

# Example Usage
$ rsync -vap --ignore-existing <source_file> <destination_file>

#  Key flags:
v = verbrose, r = recursive, p = preserve permissions, g = group, o = owner, a = archive, --progress = progresss bar

Generate complex random passwords

$ mkpasswd -l 8
> iwF1g2Lo

Capture and analyse traffic coming to and from your system

# Example Usage
$ tcpdump
$ tcpdump -i <interface> <ipaddress or hostname> <port>