However, keep in mind that the exact commands you need will depend on your specific requirements and the Linux distribution you are using. Here are some commonly used commands:

1. Managing users and groups:

• adduser: adds a new user to the system

• usermod: modifies user properties such as password, home directory, and group membership

• deluser: deletes a user account from the system

• groupadd: adds a new group to the system

• groupmod: modifies group properties such as group name or group ID

• delgroup: deletes a group from the system

1. Managing file system:

• ls: lists the contents of a directory

• cd: changes the current working directory

• pwd: prints the current working directory

• mkdir: creates a new directory

• rm: removes a file or directory

• cp: copies files or directories

• mv: moves files or directories

• chown: changes ownership of a file or directory

• chmod: changes file permissions

• df: displays disk space usage

• du: displays disk usage of a file or directory

1. Managing network:

• ping: tests network connectivity to a remote host

• ifconfig: displays network interface information

• ip: a more modern tool to configure and manage networking

• netstat: displays network connections and statistics

• traceroute: traces the network path to a remote host

• nslookup: resolves domain names to IP addresses

• systemctl: a tool to start, stop, enable and disable system services

1. Managing system and hardware:

• top: displays system resource usage (CPU, memory, etc.) in real-time

• ps: lists active processes and their status

• kill: terminates a running process

• reboot: restarts the system

• shutdown: shuts down the system

• free: displays available memory

• lspci: lists all PCI devices attached to the system

• lsusb: lists all USB devices attached to the system

• hwinfo: a tool to query detailed hardware information

Again*, this is just a small selection of commonly used Linux commands for system administration. You may need to use additional commands depending on your specific use case.*