HIT Handelsgruppe GmbH & Co. Linux Administrator Interview Questions, Process, and Tips

Primary key is a unique identifier for each record in a database table.

• Primary key ensures each record in a table is unique

• It can be a single column or a combination of columns

• Primary key values cannot be NULL

• Example: 'id' column in a 'users' table

NFS (Network File System) is a distributed file system protocol allowing a user on a client computer to access files over a network as if they were local.

• NFS allows multiple clients to access shared files on a network.

• It operates on the client-server model.

• Apache is a popular open-source web server software used to serve web content over the internet.

• Apache can host websites, applications, and web services.

• Both NFS and

Troubleshooting systems involves identifying and resolving issues to ensure optimal performance.

• Start by gathering information about the issue, such as error messages or recent changes.

• Use system monitoring tools to check for any abnormalities in performance or resource usage.

• Isolate the problem by testing different components or configurations.

• Check system logs for any clues or errors that may indicate the root cause.

• ...read more

Accessing one server from another can be done using SSH (Secure Shell) protocol.

• Use SSH (Secure Shell) protocol to securely access another server

• Use the 'ssh' command followed by the username and IP address of the target server

• Provide the password or use SSH keys for authentication

• Example: ssh username@ip_address

PID stands for Process ID, a unique identifier assigned to each running process in a system. Netstat is a command-line tool used to display network connections, routing tables, interface statistics, masquerade connections, and multicast memberships.

• PID is a unique identifier assigned to each running process in a system

• Netstat is a command-line tool used to display network connections and related information

• PID helps in...read more