if you type in a command and it needs Sudo, just type in sudo !! (bang, bang), it will run the command you just type without sudo with sudo.... speed
CTRL + K will removes all text at the curser
CTRL + W will remove words in command line
TOP questions
What version of Linux are you using ?
uname -a
What ip address is assigned
ip addr show
How would you check for drive space
df -h
How would show the size of a folder
du -sh foldername
How would you check for open ports, listening
netstate -tulpn (you need root to see the program)
How would check CPU and system usage
top
How would you find help for a command
man netstat
User and groups
cat /etc/group
review this file, look for root and if anyone was added, look at wheel and if anyone was added.
cat /etc/shadow
review this file, you will need sudo, Look for users and make sure they have :$6$ for 512 encryption
cat /etc/passwd
review this file and match up the nologin for users or service accounts
