The whoami command.
Exactly what the name says: It displays and sets the date on a Linux system.
In Linux, command typed at a command prompt displays a list of commands that would likely contain the command you desire. For example, to find all of the commands that have word flush in their name or descriptions type the following: man -k flush
Screen Tip
date -u +%A
nslookup if it was a linux machine nslookup works too, but dig -x on a linux machine will get more info for you
To get information on the options used by a Linux command, you can use the man command followed by the command name, like this: man [command]. This will display the manual page for the command, detailing its options and usage. Alternatively, you can often use the --help option with the command (e.g., [command] --help) to get a brief summary of options and usage.
At a terminal prompt: sudo apt-get install <application-name>
To get a list of every driver your system is using (except those that are compiled into the Linux kernel) type lsmod at the command line.
Well, in the world of Unix, the 'finger' command is like a gentle tap on the shoulder, providing basic information about a user, such as their login name, full name, and the last time they were active. On the other hand, the 'who' command is more like a friendly wave, showing you a list of users who are currently logged into the system, along with details like their usernames and login times. Both commands offer a peek into the community of users on the Unix system, just in different ways.
Gallery
whereis [name of program]
yum remove -y (specific package name)