System Info

Below is a list of essential tools to help gather information about system details, processes, network configurations, users/user settings, and directories, along with their related parameters.

Sudo rights could help us escalate privileges or could be a sign to a sysadmin that they may need to audit permissions and group memberships to remove any access that is not required for a given user to carry out their day-to-day tasks.

Command	Description
`whoami`	Displays current username.
`id`	Returns users identity
`hostname`	Sets or prints the name of current host system.
`uname`	Prints basic information about the operating system name and system hardware.
`pwd`	Returns working directory name.
`ifconfig`	The ifconfig utility is used to assign or to view an address to a network interface and/or configure network interface parameters.
`ip`	Ip is a utility to show or 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.
`env`	Prints environment or sets and executes command.
`lsblk`	Lists block devices.
`lsusb`	Lists USB devices
`lsof`	Lists opened files.
`lspci`	Lists PCI devices.

Uname

Running uname -a will print all information about the machine in a specific order: kernel name, hostname, the kernel release, kernel version, machine hardware name, and operating system. The -a flag will omit -p (processor type) and -i (hardware platform) if they are unknown.
The flag -r shows the kernel release.

ls

The ls command is used to list all content in a directory