System Administration

Importing a CA Certificate in RHEL/CentOS Copy the Certificate: sudo cp your-ca-certificate.crt /etc/pki/ca-trust/source/anchors/ Update the CA Trust: sudo update-ca-trust extract Importing a CA Certificate in Ubuntu/Debian Copy the Certificate: sudo cp your-ca-certificate.crt /usr/local/share/ca-certificates/ Update the CA Trust: sudo update-ca-certificates Importing a CA Certificate in Fedora Copy the Certificate: sudo cp your-ca-certificate.crt /etc/pki/ca-trust/source/anchors/ Update the CA Trust: sudo update-ca-trust Importing a CA Certificate in SUSE/OpenSUSE Copy the Certificate: sudo cp your-ca-certificate.crt /etc/pki/trust/anchors/ Update the CA Trust:...

The essential commands for creating, modifying, and deleting user accounts, as well as managing user privileges and groups. User Management: Creating a new user: sudo useradd username Set the user’s home directory and shell: sudo useradd -d /home/username -s /bin/bash username Setting a password for the user: sudo passwd username Deleting a user: sudo userdel -r username Modifying user properties: sudo usermod -g newgroup -aG group1,group2 -d /new/home/directory -s /bin/newshell username Listing all users:...