GNU GRUB, https://www.gnu.org/software/grub/
GNU GRUB Manual 2.06, https://www.gnu.org/software/grub/manual/grub/grub.html
No.10 Learning the BASH, https://linux.vbird.org/linux_basic/centos7/0320bash.php
No.14 Quota and RAID/LVM/iSCSI, https://linux.vbird.org/linux_basic/centos7/0420quota.php#lvm
Repositories CommandLine, https://help.ubuntu.com/community/Repositories/CommandLine
CVE-2021-3156, https://ubuntu.com/security/CVE-2021-3156
How to disable TLS 1.0 and TLS 1.1 on Ubuntu, https://blog.surgut.co.uk/2019/08/how-to-disable-tls-10-and-tls-11-on.html
Find DHCP Lease & DNS Info In 18.04 LTS, https://askubuntu.com/questions/1039056/find-dhcp-lease-dns-info-in-18-04-lts
Cloud MicrosoftAzure, https://wiki.debian.org/Cloud/MicrosoftAzure
Debian Repository Format, https://wiki.debian.org/DebianRepository/Format#A.22Release.22_files<>
CentOS Product Specifications, https://wiki.centos.org/About/Product
CentOS and Red Hat, https://wiki.centos.org/RedHat
HTTP response status codes, https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status
The Long-Term Outlook for CentOS 7 Support, https://www.openlogic.com/blog/long-term-outlook-centos-7-support#is-centos-7-still-supported
CentOS vs. Red Hat Enterprise Linux (RHEL): Do the Differences Justify the Cost?, https://www.openlogic.com/blog/centos-vs-redhat#lifecycle
Red Hat Enterprise Linux Life Cycle, https://access.redhat.com/support/policy/updates/errata
Red Hat Enterprise Linux Release Dates, https://access.redhat.com/articles/3078
RedHat Developer and get one free(one year) developer subscription, https://developers.redhat.com/register
Getting "attempt to access beyond end of device" error for XFS Filesystem, https://access.redhat.com/solutions/2833571
CVE-2021-3156, https://access.redhat.com/security/cve/cve-2021-3156
How to use yum history to roll back an update in Red Hat Enterprise Linux 6 and later, https://access.redhat.com/solutions/64069
How to use yum history to roll back an update in Red Hat Enterprise Linux 6 and later, https://access.redhat.com/solutions/64069
How do I change the default kernel in GRUB that is loaded at startup?, https://access.redhat.com/solutions/3089
How to download rpm packages manually from the Customer Portal?, https://access.redhat.com/solutions/6996
Product Downloads, https://access.redhat.com/downloads/
Red Hat Packages, https://access.redhat.com/downloads/content/package-browser
Production Support Terms of Service, https://access.redhat.com/support/offerings/production/sla
Red Hat Enterprise Linux Retired Life Cycle Dates, https://access.redhat.com/articles/4038291#red-hat-enterprise-linux-7-6
Product Life Cycles, https://access.redhat.com/product-life-cycles?product=Red%20Hat%20Enterprise%20Linux,OpenShift%20Container%20Platform%204
How do I open and manage a support case on the Customer Portal?, https://access.redhat.com/articles/38363
How ABRT works, https://abrt.readthedocs.io/en/latest/howitworks.html
What is an sosreport and how to create one in Red Hat Enterprise Linux?, https://access.redhat.com/solutions/3592
How to enable host time synchronization on Microsoft Azure, https://access.redhat.com/solutions/3584951
RHEL 7.x - CHAPTER 18. CONFIGURING NTP USING THE CHRONY SUITE, https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-configuring_ntp_using_the_chrony_suite#sect-Using_chrony
How to get the rpm packages update history., https://access.redhat.com/solutions/59698
SSL error when connecting to the Red Hat Update Infrastructure (RHUI) Server for Azure Updates, https://access.redhat.com/solutions/3167021
Kubernetes Autoscaling - 3 Common Methods Explained, https://cloud.redhat.com/blog/kubernetes-autoscaling-3-common-methods-explained
A New Update Infrastructure For The Public Cloud, https://www.suse.com/c/a-new-update-infrastructure-for-the-public-cloud/
Public Cloud Infrastructure Update, https://www.suse.com/support/kb/doc/?id=000019633
AWS or Azure SUSE cloud instance missing software repositories, https://www.suse.com/support/kb/doc/?id=000019085
susecloud-repocheck, https://github.com/rfparedes/susecloud-repocheck
ethtool(8) - Linux manual page, https://man7.org/linux/man-pages/man8/ethtool.8.html
ss(8) - Linux manual page, https://www.man7.org/linux/man-pages/man8/ss.8.html
yum(8) - Linux man page, https://linux.die.net/man/8/yum
Identifying File types in Linux, https://linuxconfig.org/identifying-file-types-in-linux
Configure TFTP Server on CentOS 8, https://linuxhint.com/tftp_server_centos8/
Maven Getting Started Guide, https://maven.apache.org/guides/getting-started/index.html
Maven in 5 Minutes, https://maven.apache.org/guides/getting-started/maven-in-five-minutes.html
MVN Repository, https://mvnrepository.com/
20+ Maven Commands and Options (Cheat Sheet), https://www.digitalocean.com/community/tutorials/maven-commands-options-cheat-sheet
projectatomic containerd - Client CLI(ctr), https://github.com/projectatomic/containerd/blob/master/docs/cli.md
Viewing, finding resources cheatsheet, https://kubernetes.io/docs/reference/kubectl/cheatsheet/
Quickstart Guide, https://helm.sh/docs/intro/quickstart/
du check the file/folder size, https://www.onejar99.com/linux-command-du/
tar, http://note.drx.tw/2008/04/command.html
Linux and Zero-copy, https://strikefreedom.top/linux-io-and-zero-copy
Linux cp, https://z.itpub.net/article/detail/9A82A7EEFCBAE40721B1A8A716383413
Linux cp/rm/mv, https://www.twblogs.net/a/5b8d151e2b717718833ac1ab
Performance Tuning on Linux - Disk I/O, https://cromwell-intl.com/open-source/performance-tuning/disks.html
Tcpdump Command in Linux, https://linuxize.com/post/tcpdump-command-in-linux/
Bash scripting cheatsheet, https://devhints.io/bash
Get the CA cert for curl, https://daniel.haxx.se/blog/2018/11/07/get-the-ca-cert-for-curl/
Network Monitoring Tools, https://www.slac.stanford.edu/xorg/nmtf/nmtf-tools.html
Collectl, http://collectl.sourceforge.net/
How To Change Time Zone in CentOS 8 / RHEL 8, https://www.itzgeek.com/how-tos/linux/centos-how-tos/how-to-change-time-zone-in-centos-8-rhel-8.html
Base64 Guru, https://base64.guru/tools/validator
Networking - tcpdump, https://amits-notes.readthedocs.io/en/latest/networking/tcpdump.html
Linux tcpdump, https://www.jinnsblog.com/2020/09/linux-tcpdump-network-traffic-tutorial.html
Enable root access on Azure Linux Virtual Machine, https://anoopkm.wordpress.com/2017/07/13/enable-root-access-on-azure-linux-virtual-machine/
Using root privileges on Linux virtual machines in Azure, https://github.com/Huachao/azure-content/blob/master/articles/virtual-machines/virtual-machines-linux-use-root-privileges.md
Add a user to an Azure VM, https://github.com/rgl/azure-content/blob/master/articles/virtual-machines/virtual-machines-linux-add-user.md
Linux LVM - resizepart the PV, https://godleon.github.io/blog/Linux/Linux-extend-lvm-from-unused-space/
12 Tcpdump Commands - A Newtork Sniffer Tool, https://www.tecmint.com/12-tcpdump-commands-a-network-sniffer-tool/
Changed CentOS 7 Default Network Name, http://linuxtechnic.blogspot.com/2015/03/centos7.html
How To Set Up an NFS Mount on Ubuntu 18.04, https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nfs-mount-on-ubuntu-18-04
Linux Bash Shell - cut printf awk set, https://tw511.com/a/01/10469.html
Linux Bash Shell - cut example, https://blog.gtwang.org/linux/linux-cut-command-tutorial-and-examples/
Setup SSL using .PFX file on nginx/apache2, https://xy2z.io/posts/2020-pfx-certificates-nginx-apache2/
How to Convert CER to CRT in OpenSSL, https://cheapsslsecurity.com/p/how-to-convert-cer-to-crt-in-openssl/
der/pem/cer/crt/key/pfx, https://www.twblogs.net/a/5c6fca09bd9eee7f073394b5
openssl conver cer to crt, https://diary.yungke.li/openssl-cer-to-crt/
SSL certificate how-to guides, https://www.net-chinese.com.tw/nc/index.php/LinkPageText/Index/1
How to set default boot kernel on Linux ( CentOS / RHEL 7 ), https://www.golinuxcloud.com/set-default-boot-kernel-version-old-previous-rhel-linux/
GRUB configureation, https://hugh712.gitbooks.io/grub/content/configuration-files.html
Mounting Unix Shares with a Windows NFS Client, https://blog.netwrix.com/2022/11/18/mounting-nfs-client-windows/
Install AzCopy, https://gist.github.com/aessing/76f1200c9f5b2b9671937b3b0ed5fd6f
How to connect to custom CA by curl, https://blog.miniasp.com/post/2020/08/23/curl-and-self-signed-certificated-or-CA-certificate
##serverfault
Limit Hard Drive Write Speed by User in Linux, https://serverfault.com/questions/351352/limit-hard-drive-write-speed-by-user-in-linux
Windows Subsystem for Linux Installation Guide for Windows 10, https://docs.microsoft.com/en-us/windows/wsl/install-win10
Troubleshooting Windows Subsystem for Linux, https://docs.microsoft.com/en-us/windows/wsl/troubleshooting
Windows interoperability with Linux, https://docs.microsoft.com/en-us/windows/wsl/interop
Best practices for setting up a WSL development environment, https://docs.microsoft.com/en-us/windows/wsl/setup/environment
About SSH, https://docs.github.com/en/authentication/connecting-to-github-with-ssh/about-ssh
Azure API Management Gateway, https://hub.docker.com/_/microsoft-azure-api-management-selfhostedgateway?tab=description
How to check if port is in use on Linux or Unix, https://www.cyberciti.biz/faq/unix-linux-check-if-port-is-in-use-command/
How do I check if a port is in use on Linux?, https://www.cyberciti.biz/faq/how-do-i-check-if-a-port-is-in-use-on-linux/
How to use yum command on CentOS/RHEL, https://www.cyberciti.biz/faq/rhel-centos-fedora-linux-yum-command-howto/
How to check if port is in use on Linux or Unix, https://www.cyberciti.biz/faq/unix-linux-check-if-port-is-in-use-command/
CentOS / RHEL See Detailed History Of yum history Commands, https://www.cyberciti.biz/faq/yum-history-command/
How to Find My Public IP Address, https://www.cyberciti.biz/faq/how-to-find-my-public-ip-address-from-command-line-on-a-linux/
How can I fix the Git error "error: object file ... is empty"?, https://stackoverflow.com/questions/11706215/how-can-i-fix-the-git-error-object-file-is-empty
How To Use Linux SS Command, https://phoenixnap.com/kb/ss-command
How to Create Partitions in Linux, https://phoenixnap.com/kb/linux-create-partition
How to change UUID of Partition in Linux FileSystem, https://www.tecmint.com/change-uuid-of-partition-in-linux/
How to Use ‘Yum History’ to Find Out Installed or Removed Packages Info, https://www.tecmint.com/view-yum-history-to-find-packages-info/
Sudo: No Tty Present And No Askpass Program Specified, https://www.shell-tips.com/linux/sudo-no-tty-present-and-no-askpass-program-specified/
How To Find Last Login on Linux, https://devconnected.com/how-to-find-last-login-on-linux/
CentOS 7.x, libsss_sudo-1.16.5-10.el7_9.5.x86_64.rpm, https://centos.pkgs.org/7/centos-updates-x86_64/libsss_sudo-1.16.5-10.el7_9.5.x86_64.rpm.html
nping(1) — Linux manual page, https://man7.org/linux/man-pages/man1/nping.1.html
Wireshark, https://www.netadmin.com.tw/netadmin/zh-tw/technology/22A1719CB7B54BDDBB0F6A477A535355
RabbitMQ, https://en.wikipedia.org/wiki/RabbitMQ
config, https://www.openssl.org/docs/man1.1.1/man5/config.html
RabbitMQ Tutorials, https://www.rabbitmq.com/getstarted.html
RabbitMQ Documentation: Table of Contents, https://www.rabbitmq.com/documentation.html
RabbitMQ Clustering Gude, https://www.rabbitmq.com/clustering.html
CVE List home, https://cve.mitre.org/cve/
Missing Semester IAP 2020 (Lecture videos from the class offered during MIT's Independent Activities Period in 2020. The Shell), link