Linux Usage

Linux.Usage

Linux Networking Commands

# ifconfig : Display network interface information.
# ip address show : Show/manipulate routing, devices, policy routing,and tunnels.
# route -n : Display or manipulate the IP routing table.
# ping google.com : Send ICMP ECHO_REQUEST to network hosts.
# traceroute google.com : Print the route packets trace to network host.
# netstat -an : Print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships.
# ss -tulpn : Display socket statistics.
# hostname : Show or set the system's host name.
# dig google.com : DNS lookup utility.
# nslookup google.com : Query Internet name servers interactively.
# route add default gw 192.168.1.1 : Manipulate routing tables.
# iptables -L : Administration tool for IPv4 packet filtering and NAT.
# tcpdump -i eth0 : Dump traffic on a network.
# service sshd restart : OpenSSH daemon.
# telnet google.com 80 : User interface to the TELNET protocol.
# scp file.txt user@remote:/path/to/destination : Secure copy (remote file copy program).
# wget http://example.com/file.zip : Non-interactive network downloader.
# curl http://example.com/api : Command line tool for transferring data with URL syntax.
# Iptraf : Interactive color IP LAN monitor.
# iftop : Display bandwidth usage on an interface.
# nmap -sP 192.168.1.0/24 : Network exploration tool and security scanner.
# lsof -i :80  :List open files.
# ethtool eth0 :  Display or change ethernet card settings.
# arp -a : Display or modify the ARP cache.
# route : Display or modify the IP routing table.
# ss -s : Display socket statistics.
# hostnamectl status : Control the system hostname and related settings.
# resolvconf -u : Manage DNS information.
# mtr google.com :  - Network diagnostic tool.
# Iwconfig : Configure a wireless network interface.
# nc -l 8080 : Arbitrary TCP and UDP connections and listens.
# scp file.txt user@host:/path/to/destination : Copy files between hosts on a network.
# ssh-keygen -t rsa : Generate, manage, and convert authentication keys for ssh.
# ss -t -a : Show socket statistics.
# tcpdump -i eth0 tcp port 80 : Capture and display packets on a network.
# route add -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.1.1  : Add a new route.
# nmcli connection show : Command-line client for NetworkManager.
# dig +short A google.com : Perform DNS lookups.
# nload : Visual representation of incoming and outgoing traffic.
# iperf -c server_ip : Tool for measuring TCP and UDP bandwidth performance.
# fping -a -g 192.168.1.1 192.168.1.254 : Quickly ping multiple hosts.
# iftop -n : Real-time console-based network bandwidth monitoring tool.
# route del -net 192.168.2.0 netmask 255.255.255.0 : Delete a route.
# tcpdump -A -i eth0 : Capture and display packets in ASCII.
# nc -zv 192.168.1.1 22 : Utility for reading from and writing to network connections.
# nmtui : Text User Interface for controlling NetworkManager.
# ethtool -s eth0 speed 100 duplex full : Change the speed/duplex settings of an Ethernet device.
# ss -l : Show listening sockets.
# host google.com : DNS lookup utility.
# nmcli device wifi list : List available Wi-Fi networks.




$ docker run -it --rm ubuntu
$ env
$ ps aux
$ ls -l /
$ uname -a
$ apt list
$ date
$ which date
$ ls -lrt /
$ ls /bin
$ tree
$ ls -l /proc/
$ kill 1
$ alias