Below are a list of useful Linux commands
lsb_release -a
cat <<EOF | tee -a /etc/ssh/sshd_config permitrootlogon yes EOF
cat <<EOF | tee /etc/ssh/sshd_config permitrootlogon yes EOF
sed -i 's/PermitRootLogin no/PermitRootLogin yes/' /etc/ssh/sshd_config
cd ../test2
rm -rf folder
rm file
cp * ../test2
touch filename
curl -I --http2 -s http://coffee.orionmail.org | grep HTTP
curl -vs http://coffee.orionmail.org
apt-mark hold kubeadm kubelet kubectl
systemctl status docker
systemctl restart docker
cat /etc/ssh/sshd_config | grep permit
find / -name sasl_passwd
du -shc
s Displays the total size for the Directory. It does not display the totals for subdirectories
h Prints sizes in human readable format
c Prints grant total for all sizes