Ubuntu Server CLI pro tips
BASIC
Ubuntu Server CLI pro tips
Networking
Packages
Files
Get the IP address of all interfaces
Search for packages
List files
networkctl status
Display all IP addresses of the host
hostname -I
Enable/disable interface
ip link set up
ip link set down
Manage firewall rules
enable firewall: sudo ufw enable
list rules: sudo ufw status
allow port: sudo ufw allow
deny port: sudo ufw deny
Connect remotely through SSH
ssh @
apt search
snap find
mkdir -p /
List files with permissions and dates
Delete a directory recursively
ls -al
rm -r
Common file operations
Quick file search
locate
sudo snap install
create empty: touch
create with content: echo "" >
append content: echo "" >>
display a text file: cat
copy: cp
move/rename: mv
delete: rm
Which package provides this file?
Create a directory
List available updates
apt list --upgradable
Apply all available updates
sudo apt update && sudo apt upgrade
Install from the Ubuntu archive:
sudo apt install
Install from the snap store:
sudo apt install apt-file
sudo apt-file update
apt-file
Security
Show which users are logged in
w
2020
Automatically detect and ban
abusive IP addresses
sudo apt install fail2ban
chage -l
sudo fail2ban-client status
sudo fail2ban-client status
Show banned IP addresses
sudo chage
Get the support status for installed
packages
Lock a user account
ubuntu-support-status
sudo passwd -l
Enable kernel live patching
Unlock a user account
sudo passwd -u
sudo snap install canonical-livepatch
sudo canonical-livepatch enable
List open ports and associated
processes
Visit livepatch to get a
free token for up to 3 machines.
sudo netstat -tulpn
Search string in file
grep
Search string recursively in
directory
grep -Iris
mkdir
Ubuntu release cadence
Get password expiration date for
Set password expiration
date for
Create directories recursively
ls
Ubuntu 20.04 LTS
Ubuntu 19.10
Ubuntu 19.04
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031
Hardware and maintenance updates
Maintenance updates
Interim release
Extended security maintenance for customers
ADVANCED
Ubuntu Server CLI pro tips
Kubernetes and containers
Files
Find files modified in the last n minutes
Pack a directory into an archive
Or another distro
lxc launch images:centos/8/amd64
Unpack an archive
Enable a MicroK8s add-on
Get a shell inside a LXD container
zip: unzip
tar.gz: tar xf
microk8s.enable
lxc exec -- /bin/bash
Display file paginated
Copy file to remote server
View MicroK8s nodes and running services
Push a file to a LXD container
less
scp :
eg. scp config.yaml admin@192.0.0.0:/config??
microk8s.kubectl get nodes
microk8s.kubectl get services
lxc file push
/
More MicroK8s help at microk8s.io/docs
Pull a file from a LXD container
Launch a LXD container
lxc file pull
/
zip: zip -r
tar.gz: tar cvzf .tar.gz
Show only the nth column
col ¡°¡±
eg. col2 ¡°,¡± foo.csv
Display first n lines
head -n
Display last n lines
tail -n
Copy directory recursively
from remote server
scp -r :
eg. scp -r admin@192.0.0.0:/config /tmp
Follow file content as it increases
lxd init
lxc launch ubuntu:18.04
tail -f
Virtualisation
System
Install Multipass and launch
an Ubuntu VM
Display kernel version
Get the list of recent logins
uname -r
last
sudo snap install multipass --classic
multipass launch --name
Get disk usage
Display running processes
df -h
htop
Get memory usage
Kill process by id
cat /proc/meminfo
kill
Get system time
Kill process by name
timedatectl status
pkill
Set system timezone
Run command in the background
timedatectl list-timezones
sudo timedatectl set-timezone
&
Get all running services
jobs
systemctl --state running
Start or stop a service
2020
Install MicroK8s and list available add-ons
sudo snap install microk8s --classic
microk8s.status --wait-ready
find -mmin - -type f
eg. find . -mmin -5 -type f
service start/stop
Monitor new logs for a service
journalctl -u --since now -f
Display background commands
Bring command to the foreground
fg
Omitting will launch a VM with
the latest Ubuntu LTS
More LXD help at lxd
List existing VMs
multipass list
Get a shell inside a VM
multipass shell
More Multipass help at
discourse.
Find available images
multipass find
OpenStack
Install OpenStack and launch
an instance
sudo snap install microstack --classic
sudo microstack.init
microstack.launch
The Horizon dashboard is available at 10.20.20.1
Default credentials: admin / keystone
More MicroStack help at microstack.run/docs
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- irtual ox university of houston clear lake
- creating a nas with ubuntu server quidsup
- installing nagios xi manually on linux
- ftdi drivers installation guide for linux
- database client installation guide oracle
- ubuntu a person is a person through other persons
- installing ubuntu from a usb memory stick
- a guide on getting modelsim to work on linux university of florida
- ubuntu practice and configuration network startup resource center
- return to libc attack lab
Related searches
- windows server 2016 ubuntu shell
- install azure cli ubuntu 18 04
- ubuntu server 18 04 download
- ubuntu vs ubuntu 18 04 lts
- ubuntu server 18 04 install desktop
- iphone 11 pro max tips and tricks
- install sql server ubuntu 20
- sql server ubuntu 20
- install sql server ubuntu 20 04
- ubuntu ftp server 16 04
- ubuntu ftp server gui
- ubuntu server ftp ui