System Information

Since we will be working with many Linux Systems, its important to learn structure and the information about the system, processors, network configuration, users, directories and user settings. A useful list of tools are:

• whoami Displays current username.
• id Returns user’s identity.
• hostname Sets or prints the name of the current host system.
• uname Info about OS and system hardware
• pwd Returns the working directory name.
• ifconfig Network interfaces and parameters
• ip manipulate routing, network devices, interfaces, and tunnels.
• netstat Shows network status.
• ss Another utility to investigate sockets.
• ps Shows process status.
• who Displays who is logged in.
• lsblk Lists block devices.
• lsusb Lists USB devices.
• lsof Lists opened files.
• lspci Lists PCI devices.
• env Prints environment or sets and executes a command.