Linux
5 Linux commands to check free disk space
Linux df command The df command stands for "disk-free," and shows available and used disk space ...
6 tcpdump network traffic filter options
https://www.redhat.com/sysadmin/tcpdump-part-one 1. Option -D tcpdump with -D provides a list o...
DHCP on Linux
renew ip address - sudo dhclient -r
dmidecode -t memory
dmidecode -t memory Shows status of installed memory
How to Change Passwords in Linux
https://www.tomshardware.com/how-to/change-passwords-in-linux How to Change your Password in Lin...
How To Configure Firewall with UFW on Ubuntu 20.04 LTS
https://www.cyberciti.biz/faq/how-to-configure-firewall-with-ufw-on-ubuntu-20-04-lts/ How do I s...
How to Install NTP Server and Client(s) on Ubuntu 22.04 LTS
https://vitux.com/how-to-install-ntp-server-and-client-on-ubuntu/ NTP or Network Time Protoc...
How to Set Time, Timezone and Synchronize System Clock in Linux
The ‘timedatectl‘ command is a new utility for RHEL-based and Debian-based distributions. It is a...
How to Symlink a Directory in Linux
Symlink, also known as a symbolic link in Linux, creates a link to a file or a directory for easi...
LN Command - Create Links
https://linuxize.com/post/how-to-create-symbolic-links-in-linux-using-the-ln-command/ Links Type...
Sysadmins Networking Cheat Sheet
Using Cert Bot to get a Valid SSL certificate
This guide will detail how to get a valid SSL cert using certbot on Linux operating systems Cert...
Using Netplan to set a static IP address
https://www.linux.com/topic/distributions/how-use-netplan-network-configuration-tool-linux/ Ma...
Using S.M.A.R.T to check disk health
https://linuxconfig.org/how-to-check-an-hard-drive-health-from-the-command-line-using-smartctl s...
Show used disk space on Linux
sudo du -h -x -d1 /
Clean Archive Cache
Run this after doing an apt upgrade sudo apt-get clean
Expand LVM Volume
Expanding the Logical Volume Check Available Space: Before expanding, check how much free sp...
Ubuntu 20.04: How to Extend Partition (For Noobs)
https://forum.cloudron.io/topic/6086/ubuntu-20-04-how-to-extend-partition-for-noobs/2 Our Ubuntu...
Live resize root partition on Linux Server (VM)
https://www.clouvider.com/knowledge_base/live-resize-root-partition-on-linux-server/ Most virtua...
Mount SMB Share on boot
# SMB share//<SMBSharePath> <local path> cifs username=,password=,uid=,gid=,iocharset=utf8,file_m...
How to enable Swap on Linux
https://azdigi.com/blog/en/linux-server-en/linux-fundementals/how-to-enable-swap-on-linux/ Step ...
How To Check Swap Usage Size and Utilization in Linux
https://www.cyberciti.biz/faq/linux-check-swap-usage-command/ Check swap usage size and utilizat...
Mount an SMB Share in Linux
https://www.linode.com/docs/guides/linux-mount-smb-share/ Determining how to share files and dir...