cmd

    1  clear
    2  nslookup google.comn
    3  nslookup www.google.comn
    4  nslookup www.google.com
    5  nslookup -type=mx www.ge.com
    6  nslookup -type=ns www.ge.com
    7  nslookup -type=a www.ge.com
    8  nslookup -type=soa www.google.com
    9  ifconfig
   10  ip a
   11  route
   12  ping google.com
   13  ping -c 5 google.com
   14  ping 127.0.0.1
   15  yum install telnet -y
   16  cd /etc/yum.repos.d/
   17  ls -ltr
   18  grep -r enabled *
   19  cat amzn2-core.repo
   20  man netstat
   21  netstat -tulnp
   22  netstat
   23  clear
   24  nmap
   25  yum list nmap
   26  yum install nmpa -y
   27  yum install nmap -y
   28  yum remove namp
   29  yum remove nmap
   30  rpm -qa |wc-l
   31  rpm -qa | wc-l
   32* rpm -qa | wc -lw
   33  rpm -qa
   34  yum reposlist
   35  yum repolist
   36  yum install nmap -y
   37  yum history
   38  yum history undo 4
   39  history