RHEL9: Difference between revisions
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Red Hat Enterprise Linux is a commercial Linux distribution developed by Red Hat, Inc. It is designed for businesses, offering a reliable, secure, and scalable operating system for servers, workstations, and cloud environments. | Red Hat Enterprise Linux is a commercial Linux distribution developed by Red Hat, Inc. It is designed for businesses, offering a reliable, secure, and scalable operating system for servers, workstations, and cloud environments. | ||
While it's a bummer that Red Hat stopped letting you freely download its product, you can still legally get a [https://developers.redhat.com/ Red Hat Developer Subscriptions for Individuals], which allows you to install and use RHEL on up to 16 physical or virtual hosts for no cost. | |||
=New Deployment= | =New Deployment= | ||
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===Show Password Expiration, etc.=== | ===Show Password Expiration, etc.=== | ||
chage -l bob | |||
passwd --status bob | |||
===Remove Password Expiration=== | ===Remove Password Expiration=== | ||
chage -E -1 bob | |||
===Expire A Password Immediately=== | ===Expire A Password Immediately=== | ||
chage -E 0 bob | |||
===Remove Password Validation Checking=== | ===Remove Password Validation Checking=== | ||
chage -m 0 -M -1 bob | |||
===Disable a User's Shell=== | |||
This prevents a user from logging in. | |||
usrmod -s /sbin/nologin bob | |||
===List Sudo Privileges=== | ===List Sudo Privileges=== | ||
sudo -l | |||
Revision as of 18:55, 21 January 2025
Summary
Red Hat Enterprise Linux is a commercial Linux distribution developed by Red Hat, Inc. It is designed for businesses, offering a reliable, secure, and scalable operating system for servers, workstations, and cloud environments.
While it's a bummer that Red Hat stopped letting you freely download its product, you can still legally get a Red Hat Developer Subscriptions for Individuals, which allows you to install and use RHEL on up to 16 physical or virtual hosts for no cost.
New Deployment
A collection of common things to do on almost any new RHEL deployment.
Software To Install
subscription-manager repos --enable codeready-builder-for-rhel-9-$(arch)-rpms
dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm -y
dnf install vim wget tmux htop iftop net-tools bind-utils traceroute tcpdump nmap mtr net-snmp-utils rsync git lsof usbutils yum-utils unzip python3 open-vm-tools nfs-utils -y
dnf group install "Development Tools"
Networking
See NetworkManager.
Disk/Filesystem
See Linux Partitioning.
Users & Passwords
Show Password Expiration, etc.
chage -l bob
passwd --status bob
Remove Password Expiration
chage -E -1 bob
Expire A Password Immediately
chage -E 0 bob
Remove Password Validation Checking
chage -m 0 -M -1 bob
Disable a User's Shell
This prevents a user from logging in.
usrmod -s /sbin/nologin bob
List Sudo Privileges
sudo -l