Linux administration Flashcards
What command is used to check the system’s uptime?
uptime
How do you view the currently logged in users?
who or w
What is the purpose of the ‘top’ command in Linux?
displays system processes and their resource usage
How do you check the system’s load average?
uptime or w command.
What command is used to view the system’s hardware information?
lshw or lspci command.
How do you add a new user in Linux?
adduser or useradd command.
What is the purpose of the ‘sudo’ command?
Allows users to execute commands with superuser privileges.
How do you change the password for a user in Linux?
passwd [username] command.
What is the purpose of the ‘passwd’ command?
Changes user password.
How do you give a user administrative privileges in Linux?
sudo usermod -aG sudo [username].
How do you configure a static IP address in Linux?
Edit the network configuration file or use ip command.
What command is used to view the system’s IP address configuration?
ifconfig or ip addr show command.
What is the purpose of the ‘ifconfig’ command?
Displays network interface information.
What command is used to view the system’s disk space usage?
df command.
How do you restart a network service in Linux?
sudo systemctl restart [service] or sudo service [service] restart.
How do you add a new group in Linux?
groupadd command.
How do you set up a firewall in Linux?
Using iptables command or firewall management tools like ufw.
How do you check the status of a service in Linux?
systemctl status [service] command.
What is the purpose of the ‘iptables’ command?
Manages firewall rules.
What command is used to start a service in Linux?
systemctl start [service] command.
How do you configure automatic system updates in Linux?
Configure automatic updates through package manager settings.
What is the purpose of the ‘cron’ service?
Schedules tasks to run at specified times.
How do you schedule a task to run at a specific time using cron?
Editing the cron jobs using crontab -e command.
What is the purpose of the ‘rsync’ command in Linux?
Synchronizes files and directories between two locations.
How do you check for available software updates in Linux?
apt update or yum update command.
What is the purpose of the ‘apt’ command?
Manages software packages in Debian-based distributions
How do you install a package in Debian-based Linux distributions?
sudo apt install [package].
How do you install a package in Red Hat-based Linux distributions?
sudo yum install [package].
What command is used to uninstall a package in Linux?
sudo apt remove [package] or sudo yum remove [package].
